[0931098] | 1 | <?xml version="1.0" encoding="ISO-8859-1"?>
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[6732c094] | 2 | <!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
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| 3 | "http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd" [
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[0931098] | 4 | <!ENTITY % general-entities SYSTEM "../../general.ent">
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| 5 | %general-entities;
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| 6 |
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[3a37311] | 7 | <!ENTITY openssh-download-http
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[8ba08b56] | 8 | "http://ftp.openbsd.org/pub/OpenBSD/OpenSSH/portable/openssh-&openssh-version;.tar.gz">
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[3a37311] | 9 | <!ENTITY openssh-download-ftp
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[8ba08b56] | 10 | "ftp://ftp.openbsd.org/pub/OpenBSD/OpenSSH/portable/openssh-&openssh-version;.tar.gz">
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[5c22cb01] | 11 | <!ENTITY openssh-md5sum "13009a9156510d8f27e752659075cced">
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[295ca00] | 12 | <!ENTITY openssh-size "1.5 MB">
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| 13 | <!ENTITY openssh-buildsize "43 MB (51 MB with the test suite)">
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[5c22cb01] | 14 | <!ENTITY openssh-time "0.4 SBU (running the tests takes at least 10
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[c175983] | 15 | minutes, irrespective of processor speed)">
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[0931098] | 16 | ]>
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| 17 |
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[1708d1e9] | 18 | <sect1 id="openssh" xreflabel="OpenSSH-&openssh-version;">
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[e4e0d060] | 19 | <?dbhtml filename="openssh.html"?>
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| 20 |
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| 21 | <sect1info>
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| 22 | <othername>$LastChangedBy$</othername>
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| 23 | <date>$Date$</date>
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| 24 | </sect1info>
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| 25 |
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| 26 | <title>OpenSSH-&openssh-version;</title>
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| 27 |
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[0978e07] | 28 | <indexterm zone="openssh">
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| 29 | <primary sortas="a-OpenSSH">OpenSSH</primary>
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| 30 | </indexterm>
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| 31 |
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| 32 | <sect2 role="package">
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| 33 | <title>Introduction to OpenSSH</title>
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| 34 |
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[8ba08b56] | 35 | <para>
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| 36 | The <application>OpenSSH</application> package contains
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| 37 | <command>ssh</command> clients and the <command>sshd</command> daemon. This
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| 38 | is useful for encrypting authentication and subsequent traffic over a
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| 39 | network. The <command>ssh</command> and <command>scp</command> commands are
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| 40 | secure implementions of <command>telnet</command> and <command>rcp</command>
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| 41 | respectively.
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| 42 | </para>
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[6b5cc24] | 43 |
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[8d284f50] | 44 | &lfs79_checked;
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[6b5cc24] | 45 |
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[e4e0d060] | 46 | <bridgehead renderas="sect3">Package Information</bridgehead>
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| 47 | <itemizedlist spacing="compact">
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| 48 | <listitem>
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[3a37311] | 49 | <para>
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| 50 | Download (HTTP): <ulink url="&openssh-download-http;"/>
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| 51 | </para>
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[e4e0d060] | 52 | </listitem>
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| 53 | <listitem>
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[3a37311] | 54 | <para>
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| 55 | Download (FTP): <ulink url="&openssh-download-ftp;"/>
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| 56 | </para>
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[e4e0d060] | 57 | </listitem>
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| 58 | <listitem>
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[3a37311] | 59 | <para>
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| 60 | Download MD5 sum: &openssh-md5sum;
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| 61 | </para>
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[e4e0d060] | 62 | </listitem>
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| 63 | <listitem>
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[3a37311] | 64 | <para>
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| 65 | Download size: &openssh-size;
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| 66 | </para>
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[e4e0d060] | 67 | </listitem>
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| 68 | <listitem>
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[3a37311] | 69 | <para>
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| 70 | Estimated disk space required: &openssh-buildsize;
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| 71 | </para>
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[e4e0d060] | 72 | </listitem>
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| 73 | <listitem>
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[3a37311] | 74 | <para>
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| 75 | Estimated build time: &openssh-time;
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| 76 | </para>
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[e4e0d060] | 77 | </listitem>
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| 78 | </itemizedlist>
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| 79 |
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| 80 | <bridgehead renderas="sect3">OpenSSH Dependencies</bridgehead>
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| 81 |
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| 82 | <bridgehead renderas="sect4">Required</bridgehead>
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[ac38e9dc] | 83 | <para role="required">
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| 84 | <xref linkend="openssl"/> or
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| 85 | <ulink url="http://www.libressl.org/">LibreSSL Portable</ulink>
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| 86 | </para>
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[e4e0d060] | 87 |
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| 88 | <bridgehead renderas="sect4">Optional</bridgehead>
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[3a37311] | 89 | <para role="optional">
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| 90 | <xref linkend="linux-pam"/>,
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| 91 | <xref linkend="x-window-system"/>,
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| 92 | <xref linkend="mitkrb"/>,
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[ba0004e] | 93 | <ulink url="http://www.thrysoee.dk/editline/">libedit</ulink>,
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[295ca00] | 94 | <ulink url="https://github.com/OpenSC/OpenSC/wiki">OpenSC</ulink>, and
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[3a37311] | 95 | <ulink url="http://www.citi.umich.edu/projects/smartcard/sectok.html">libsectok</ulink>
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| 96 | </para>
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[9561d7e] | 97 |
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[409e2e7] | 98 | <bridgehead renderas="sect4">Optional Runtime (Used only to gather entropy)</bridgehead>
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[3a37311] | 99 | <para role="optional">
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[bc6e56d] | 100 | <xref linkend="openjdk"/>,
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[59382ab] | 101 | <xref linkend="net-tools"/>, and
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[ac38e9dc] | 102 | <xref linkend="sysstat"/>
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[3a37311] | 103 | </para>
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[e4e0d060] | 104 |
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[3a37311] | 105 | <para condition="html" role="usernotes">
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[8ba08b56] | 106 | User Notes: <ulink url="&blfs-wiki;/OpenSSH"/>
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[3a37311] | 107 | </para>
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[e4e0d060] | 108 | </sect2>
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| 109 |
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| 110 | <sect2 role="installation">
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| 111 | <title>Installation of OpenSSH</title>
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| 112 |
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[afab991a] | 113 | <warning>
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| 114 | <para>
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| 115 | If reinstalling over an <application>SSH</application> connection to
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[8d284f50] | 116 | enable <xref linkend="linux-pam"/> support, be certain to temporarily set
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[afab991a] | 117 | <option>PermitRootLogin</option> to <parameter>yes</parameter> in
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| 118 | <filename>/etc/ssh/sshd_config</filename> until you complete
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| 119 | reinstallation of <xref linkend="systemd"/>, or you may find that you are
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| 120 | unable to login to the system remotely.
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| 121 | </para>
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| 122 | </warning>
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| 123 |
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[3a37311] | 124 | <para>
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| 125 | <application>OpenSSH</application> runs as two processes when connecting
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| 126 | to other computers. The first process is a privileged process and controls
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| 127 | the issuance of privileges as necessary. The second process communicates
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| 128 | with the network. Additional installation steps are necessary to set up
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| 129 | the proper environment, which are performed by issuing the following
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| 130 | commands as the <systemitem class="username">root</systemitem> user:
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| 131 | </para>
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[e4e0d060] | 132 |
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[45f3870] | 133 | <screen role="root"><userinput>install -v -m700 -d /var/lib/sshd &&
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[59382ab] | 134 | chown -v root:sys /var/lib/sshd &&
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| 135 |
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[b21c661] | 136 | groupadd -g 50 sshd &&
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[59382ab] | 137 | useradd -c 'sshd PrivSep' -d /var/lib/sshd -g sshd -s /bin/false -u 50 sshd</userinput></screen>
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[0931098] | 138 |
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[3a37311] | 139 | <para>
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| 140 | Install <application>OpenSSH</application> by running the following
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| 141 | commands:
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| 142 | </para>
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[0931098] | 143 |
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[5a2f5972] | 144 | <screen><userinput>./configure --prefix=/usr \
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| 145 | --sysconfdir=/etc/ssh \
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| 146 | --with-md5-passwords \
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[d52512f2] | 147 | --with-privsep-path=/var/lib/sshd &&
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[3a3b19b] | 148 | make</userinput></screen>
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[1b83a7c1] | 149 |
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[3a37311] | 150 | <para>
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[bc6e56d] | 151 | The testsuite requires an installed copy of <command>scp</command> to
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| 152 | complete the multiplexing tests. To run the test suite, first copy the
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| 153 | <command>scp</command> program to
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| 154 | <filename class="directory">/usr/bin</filename>, making sure that you
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| 155 | back up any existing copy first.
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[3a37311] | 156 | </para>
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[409e2e7] | 157 |
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[5a6a6be] | 158 | <para>
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[5a2f5972] | 159 | To test the results, issue: <command>make tests</command>.
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[5a6a6be] | 160 | </para>
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| 161 |
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| 162 | <!-- commenting this, I get "all tests passed" [ ken ]
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| 163 | NB tests should be run as _user_ but the role in the comment is root
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[59382ab] | 164 |
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| 165 | commenting [ bruce ]: There are a couple of tests that want root.
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| 166 | The log mentions that SUDO is not set. These skipped tests are
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| 167 | ignored and the end says 'all tests passed' even when not root
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| 168 |
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[3a37311] | 169 | <para>
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| 170 | To run the test suite, issue the following commands:
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| 171 | </para>
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[7c9e252] | 172 |
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[409e2e7] | 173 | <screen role="root"><userinput>make tests 2>&1 | tee check.log
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| 174 | grep FATAL check.log</userinput></screen>
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[7c9e252] | 175 |
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[3a37311] | 176 | <para>
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| 177 | If the above command produces no 'FATAL' errors, then proceed with the
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| 178 | installation, as the <systemitem class="username">root</systemitem> user:
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[5a6a6be] | 179 | </para>-->
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| 180 | <para>
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| 181 | Now, as the <systemitem class="username">root</systemitem> user:
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[3a37311] | 182 | </para>
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[7c9e252] | 183 |
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[59382ab] | 184 | <screen role="root"><userinput>make install &&
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[5a2f5972] | 185 | install -v -m755 contrib/ssh-copy-id /usr/bin &&
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| 186 | install -v -m644 contrib/ssh-copy-id.1 /usr/share/man/man1 &&
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[59382ab] | 187 | install -v -m755 -d /usr/share/doc/openssh-&openssh-version; &&
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| 188 | install -v -m644 INSTALL LICENCE OVERVIEW README* /usr/share/doc/openssh-&openssh-version;</userinput></screen>
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[e4e0d060] | 189 | </sect2>
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| 190 |
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| 191 | <sect2 role="commands">
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| 192 | <title>Command Explanations</title>
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| 193 |
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[3a37311] | 194 | <para>
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| 195 | <parameter>--sysconfdir=/etc/ssh</parameter>: This prevents the
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| 196 | configuration files from being installed in
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| 197 | <filename class="directory">/usr/etc</filename>.
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| 198 | </para>
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| 199 |
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| 200 | <para>
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| 201 | <parameter>--with-md5-passwords</parameter>: This enables the use of MD5
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| 202 | passwords.
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| 203 | </para>
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| 204 |
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| 205 | <para>
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| 206 | <parameter>--with-pam</parameter>: This parameter enables
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| 207 | <application>Linux-PAM</application> support in the build.
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| 208 | </para>
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| 209 |
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| 210 | <para>
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| 211 | <parameter>--with-xauth=/usr/bin/xauth</parameter>: Set the default
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| 212 | location for the <command>xauth</command> binary for X authentication.
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| 213 | Change the location if <command>xauth</command> will be installed to a
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| 214 | different path. This can also be controlled from
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| 215 | <filename>sshd_config</filename> with the XAuthLocation keyword. You can
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| 216 | omit this switch if <application>Xorg</application> is already installed.
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| 217 | </para>
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| 218 |
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| 219 | <para>
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| 220 | <parameter>--with-kerberos5=/usr</parameter>: This option is used to
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| 221 | include Kerberos 5 support in the build.
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| 222 | </para>
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[409e2e7] | 223 |
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[ba0004e] | 224 | <para>
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| 225 | <parameter>--with-libedit</parameter>: This option enables line editing
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| 226 | and history features for <command>sftp</command>.
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| 227 | </para>
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| 228 |
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[e4e0d060] | 229 | </sect2>
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| 230 |
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| 231 | <sect2 role="configuration">
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| 232 | <title>Configuring OpenSSH</title>
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| 233 |
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| 234 | <sect3 id="openssh-config">
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| 235 | <title>Config Files</title>
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| 236 |
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[3a37311] | 237 | <para>
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| 238 | <filename>~/.ssh/*</filename>,
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[e4e0d060] | 239 | <filename>/etc/ssh/ssh_config</filename>, and
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[3a37311] | 240 | <filename>/etc/ssh/sshd_config</filename>
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| 241 | </para>
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[e4e0d060] | 242 |
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| 243 | <indexterm zone="openssh openssh-config">
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| 244 | <primary sortas="e-AA.ssh">~/.ssh/*</primary>
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| 245 | </indexterm>
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| 246 |
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| 247 | <indexterm zone="openssh openssh-config">
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| 248 | <primary sortas="e-etc-ssh-ssh_config">/etc/ssh/ssh_config</primary>
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| 249 | </indexterm>
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| 250 |
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| 251 | <indexterm zone="openssh openssh-config">
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| 252 | <primary sortas="e-etc-ssh-sshd_config">/etc/ssh/sshd_config</primary>
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| 253 | </indexterm>
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| 254 |
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[3a37311] | 255 | <para>
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| 256 | There are no required changes to any of these files. However,
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| 257 | you may wish to view the
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| 258 | <filename class='directory'>/etc/ssh/</filename> files and make any
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| 259 | changes appropriate for the security of your system. One recommended
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| 260 | change is that you disable
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| 261 | <systemitem class='username'>root</systemitem> login via
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| 262 | <command>ssh</command>. Execute the following command as the
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| 263 | <systemitem class='username'>root</systemitem> user to disable
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| 264 | <systemitem class='username'>root</systemitem> login via
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| 265 | <command>ssh</command>:
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| 266 | </para>
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[e4e0d060] | 267 |
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[6c24da75] | 268 | <screen role="root"><userinput>echo "PermitRootLogin no" >> /etc/ssh/sshd_config</userinput></screen>
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| 269 |
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[3a37311] | 270 | <para>
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| 271 | If you want to be able to log in without typing in your password, first
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| 272 | create ~/.ssh/id_rsa and ~/.ssh/id_rsa.pub with
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| 273 | <command>ssh-keygen</command> and then copy ~/.ssh/id_rsa.pub to
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| 274 | ~/.ssh/authorized_keys on the remote computer that you want to log into.
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[78d9a95] | 275 | You'll need to change REMOTE_USERNAME and REMOTE_HOSTNAME for the username and hostname of the remote
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| 276 | computer and you'll also need to enter your password for the ssh-copy-id command
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[3a37311] | 277 | to succeed:
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| 278 | </para>
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| 279 |
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| 280 | <screen><userinput>ssh-keygen &&
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[78d9a95] | 281 | ssh-copy-id -i ~/.ssh/id_rsa.pub <replaceable>REMOTE_USERNAME</replaceable>@<replaceable>REMOTE_HOSTNAME</replaceable></userinput></screen>
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[3a37311] | 282 |
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| 283 | <para>
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| 284 | Once you've got passwordless logins working it's actually more secure
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| 285 | than logging in with a password (as the private key is much longer than
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| 286 | most people's passwords). If you would like to now disable password
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| 287 | logins, as the <systemitem class="username">root</systemitem> user:
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| 288 | </para>
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| 289 |
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| 290 |
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| 291 | <screen role="root"><userinput>echo "PasswordAuthentication no" >> /etc/ssh/sshd_config &&
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| 292 | echo "ChallengeResponseAuthentication no" >> /etc/ssh/sshd_config</userinput></screen>
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| 293 |
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| 294 | <para>
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[8d284f50] | 295 | If you added <application>Linux-PAM</application> support and you want
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[3a37311] | 296 | ssh to use it then you will need to add a configuration file for
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| 297 | <application>sshd</application> and enable use of
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[8d284f50] | 298 | <application>Linux-PAM</application>. Note that ssh only uses PAM to check
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[3a37311] | 299 | passwords, if you've disabled password logins these commands are not
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| 300 | needed. If you want to use PAM issue the following commands as the
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| 301 | <systemitem class='username'>root</systemitem> user:
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| 302 | </para>
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[6c24da75] | 303 |
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| 304 | <screen role="root"><userinput>sed 's@d/login@d/sshd@g' /etc/pam.d/login > /etc/pam.d/sshd &&
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[b30ddee] | 305 | chmod 644 /etc/pam.d/sshd &&
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[5a6a6be] | 306 | echo "UsePAM yes" >> /etc/ssh/sshd_config</userinput></screen>
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[e4e0d060] | 307 |
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[3a37311] | 308 | <para>
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| 309 | Additional configuration information can be found in the man
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[8d284f50] | 310 | pages for <command>sshd</command>, <command>ssh</command>, and
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[3a37311] | 311 | <command>ssh-agent</command>.
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| 312 | </para>
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[e4e0d060] | 313 | </sect3>
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| 314 |
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| 315 | <sect3 id="openssh-init">
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[4da2d9f] | 316 | <title>Systemd Units</title>
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[e4e0d060] | 317 |
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[3a37311] | 318 | <para>
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[932240d] | 319 | To start the <command>sshd</command> daemon at boot,
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| 320 | install the systemd units from the <xref linkend="bootscripts"/>
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[96733af] | 321 | package by running the following command as the
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| 322 | <systemitem class="username">root</systemitem> user:
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[4da2d9f] | 323 | </para>
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[e4e0d060] | 324 |
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| 325 | <indexterm zone="openssh openssh-init">
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| 326 | <primary sortas="f-sshd">sshd</primary>
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| 327 | </indexterm>
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| 328 |
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| 329 | <screen role="root"><userinput>make install-sshd</userinput></screen>
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[4da2d9f] | 330 |
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| 331 | <note>
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| 332 | <para>
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[0da88ea3] | 333 | This package comes with two types of units: A service file and a socket file.
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[4da2d9f] | 334 | The service file will start sshd daemon once at boot and it will keep running until the
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[8d284f50] | 335 | system shuts down. The socket file will make systemd listen on sshd port (Default port is 22, it needs
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[4da2d9f] | 336 | to be edited for anything else) and will start sshd daemon when something tries to connect
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| 337 | to that port and stop the daemon when the connection is terminated. This is
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| 338 | called socket activation.
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| 339 |
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| 340 | By default, the first method is used - sshd daemon is started at boot and stopped at shutdown.
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| 341 | If the socket method is desired, you need to run as the
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| 342 | <systemitem class="username">root</systemitem> user:
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| 343 |
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| 344 | <screen role="root"><userinput>systemctl stop sshd &&
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| 345 | systemctl disable sshd &&
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| 346 | systemctl enable sshd.socket &&
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| 347 | systemctl start sshd.socket</userinput></screen>
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| 348 | </para>
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| 349 | </note>
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| 350 |
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[e4e0d060] | 351 | </sect3>
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| 352 | </sect2>
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| 353 |
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| 354 | <sect2 role="content">
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| 355 | <title>Contents</title>
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| 356 |
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| 357 | <segmentedlist>
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| 358 | <segtitle>Installed Programs</segtitle>
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[c3c56b2] | 359 | <segtitle>Installed Libraries</segtitle>
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[e4e0d060] | 360 | <segtitle>Installed Directories</segtitle>
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| 361 |
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| 362 | <seglistitem>
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[3a37311] | 363 | <seg>
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[295ca00] | 364 | scp,
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| 365 | sftp,
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| 366 | slogin (symlink to ssh),
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| 367 | ssh,
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| 368 | ssh-add,
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| 369 | ssh-agent,
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| 370 | ssh-copy-id,
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| 371 | ssh-keygen,
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| 372 | ssh-keyscan,
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| 373 | and sshd
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[c3c56b2] | 374 | </seg>
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| 375 | <seg>
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| 376 | None
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[3a37311] | 377 | </seg>
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| 378 | <seg>
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| 379 | /etc/ssh,
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[c175983] | 380 | /usr/share/doc/openssh-&openssh-version;, and
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| 381 | /var/lib/sshd
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[3a37311] | 382 | </seg>
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[e4e0d060] | 383 | </seglistitem>
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| 384 | </segmentedlist>
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| 385 |
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| 386 | <variablelist>
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| 387 | <bridgehead renderas="sect3">Short Descriptions</bridgehead>
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| 388 | <?dbfo list-presentation="list"?>
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| 389 | <?dbhtml list-presentation="table"?>
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| 390 |
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| 391 | <varlistentry id="scp">
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| 392 | <term><command>scp</command></term>
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| 393 | <listitem>
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[3a37311] | 394 | <para>
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| 395 | is a file copy program that acts like <command>rcp</command> except
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| 396 | it uses an encrypted protocol.
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| 397 | </para>
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[e4e0d060] | 398 | <indexterm zone="openssh scp">
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| 399 | <primary sortas="b-scp">scp</primary>
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| 400 | </indexterm>
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| 401 | </listitem>
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| 402 | </varlistentry>
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| 403 |
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| 404 | <varlistentry id="sftp">
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| 405 | <term><command>sftp</command></term>
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| 406 | <listitem>
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[3a37311] | 407 | <para>
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| 408 | is an FTP-like program that works over the SSH1 and SSH2 protocols.
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| 409 | </para>
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[e4e0d060] | 410 | <indexterm zone="openssh sftp">
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| 411 | <primary sortas="b-sftp">sftp</primary>
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| 412 | </indexterm>
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| 413 | </listitem>
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| 414 | </varlistentry>
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| 415 |
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| 416 | <varlistentry id="slogin">
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| 417 | <term><command>slogin</command></term>
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| 418 | <listitem>
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[3a37311] | 419 | <para>
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| 420 | is a symlink to <command>ssh</command>.
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| 421 | </para>
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[e4e0d060] | 422 | <indexterm zone="openssh slogin">
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[b960e3ec] | 423 | <primary sortas="b-slogin">slogin</primary>
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[e4e0d060] | 424 | </indexterm>
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| 425 | </listitem>
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| 426 | </varlistentry>
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| 427 |
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| 428 | <varlistentry id="ssh">
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| 429 | <term><command>ssh</command></term>
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| 430 | <listitem>
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[3a37311] | 431 | <para>
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| 432 | is an <command>rlogin</command>/<command>rsh</command>-like client
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| 433 | program except it uses an encrypted protocol.
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| 434 | </para>
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[e4e0d060] | 435 | <indexterm zone="openssh ssh">
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| 436 | <primary sortas="b-ssh">ssh</primary>
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| 437 | </indexterm>
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| 438 | </listitem>
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| 439 | </varlistentry>
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| 440 |
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| 441 | <varlistentry id="sshd">
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| 442 | <term><command>sshd</command></term>
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| 443 | <listitem>
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[3a37311] | 444 | <para>
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| 445 | is a daemon that listens for <command>ssh</command> login requests.
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| 446 | </para>
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[e4e0d060] | 447 | <indexterm zone="openssh sshd">
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| 448 | <primary sortas="b-sshd">sshd</primary>
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| 449 | </indexterm>
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| 450 | </listitem>
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| 451 | </varlistentry>
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| 452 |
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| 453 | <varlistentry id="ssh-add">
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| 454 | <term><command>ssh-add</command></term>
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| 455 | <listitem>
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[3a37311] | 456 | <para>
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| 457 | is a tool which adds keys to the <command>ssh-agent</command>.
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| 458 | </para>
|
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[e4e0d060] | 459 | <indexterm zone="openssh ssh-add">
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| 460 | <primary sortas="b-ssh-add">ssh-add</primary>
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| 461 | </indexterm>
|
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| 462 | </listitem>
|
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| 463 | </varlistentry>
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| 464 |
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| 465 | <varlistentry id="ssh-agent">
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| 466 | <term><command>ssh-agent</command></term>
|
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| 467 | <listitem>
|
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[3a37311] | 468 | <para>
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| 469 | is an authentication agent that can store private keys.
|
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| 470 | </para>
|
---|
[e4e0d060] | 471 | <indexterm zone="openssh ssh-agent">
|
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| 472 | <primary sortas="b-ssh-agent">ssh-agent</primary>
|
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| 473 | </indexterm>
|
---|
| 474 | </listitem>
|
---|
| 475 | </varlistentry>
|
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| 476 |
|
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[5a2f5972] | 477 | <varlistentry id="ssh-copy-id">
|
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| 478 | <term><command>ssh-copy-id</command></term>
|
---|
| 479 | <listitem>
|
---|
| 480 | <para>
|
---|
| 481 | is a script that enables logins on remote machine using local keys.
|
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| 482 | </para>
|
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| 483 | <indexterm zone="openssh ssh-copy-id">
|
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| 484 | <primary sortas="b-ssh-copy-id">ssh-copy-id</primary>
|
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| 485 | </indexterm>
|
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| 486 | </listitem>
|
---|
| 487 | </varlistentry>
|
---|
| 488 |
|
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[e4e0d060] | 489 | <varlistentry id="ssh-keygen">
|
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| 490 | <term><command>ssh-keygen</command></term>
|
---|
| 491 | <listitem>
|
---|
[3a37311] | 492 | <para>
|
---|
| 493 | is a key generation tool.
|
---|
| 494 | </para>
|
---|
[e4e0d060] | 495 | <indexterm zone="openssh ssh-keygen">
|
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| 496 | <primary sortas="b-ssh-keygen">ssh-keygen</primary>
|
---|
| 497 | </indexterm>
|
---|
| 498 | </listitem>
|
---|
| 499 | </varlistentry>
|
---|
| 500 |
|
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| 501 | <varlistentry id="ssh-keyscan">
|
---|
| 502 | <term><command>ssh-keyscan</command></term>
|
---|
| 503 | <listitem>
|
---|
[3a37311] | 504 | <para>
|
---|
| 505 | is a utility for gathering public host keys from a number of hosts.
|
---|
| 506 | </para>
|
---|
[e4e0d060] | 507 | <indexterm zone="openssh ssh-keyscan">
|
---|
| 508 | <primary sortas="b-ssh-keyscan">ssh-keyscan</primary>
|
---|
| 509 | </indexterm>
|
---|
| 510 | </listitem>
|
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| 511 | </varlistentry>
|
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| 512 |
|
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| 513 | </variablelist>
|
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| 514 | </sect2>
|
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| 515 | </sect1>
|
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