[0931098] | 1 | <?xml version="1.0" encoding="ISO-8859-1"?>
|
---|
[6732c094] | 2 | <!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
|
---|
| 3 | "http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd" [
|
---|
[0931098] | 4 | <!ENTITY % general-entities SYSTEM "../../general.ent">
|
---|
| 5 | %general-entities;
|
---|
| 6 |
|
---|
[3a373116] | 7 | <!ENTITY openssh-download-http
|
---|
[c6b192c] | 8 | "https://ftp.openbsd.org/pub/OpenBSD/OpenSSH/portable/openssh-&openssh-version;.tar.gz">
|
---|
[28d1edf] | 9 | <!ENTITY openssh-download-ftp " ">
|
---|
[bed8f3ef] | 10 | <!ENTITY openssh-md5sum "&openssh-md5sum;">
|
---|
[2d0c6b1] | 11 | <!ENTITY openssh-size "1.7 MB">
|
---|
[e628e070] | 12 | <!ENTITY openssh-buildsize "45 MB (add 22 MB for tests)">
|
---|
[81a0948] | 13 | <!ENTITY openssh-time "0.2 SBU (Using parallelism=4;
|
---|
[075cb1e] | 14 | running the tests takes about 20 minutes,
|
---|
[6c6990c] | 15 | irrespective of processor speed)">
|
---|
[0931098] | 16 | ]>
|
---|
| 17 |
|
---|
[e628e070] | 18 | <!-- make check: real 18m13.005s; 9.2p1 3 Feb 2023 -->
|
---|
| 19 | <!-- make check: real 18m08.654s; 9.3p1 17 Mar 2023 -->
|
---|
[075cb1e] | 20 |
|
---|
[1708d1e9] | 21 | <sect1 id="openssh" xreflabel="OpenSSH-&openssh-version;">
|
---|
[e4e0d060] | 22 | <?dbhtml filename="openssh.html"?>
|
---|
| 23 |
|
---|
| 24 | <title>OpenSSH-&openssh-version;</title>
|
---|
| 25 |
|
---|
[0978e07] | 26 | <indexterm zone="openssh">
|
---|
| 27 | <primary sortas="a-OpenSSH">OpenSSH</primary>
|
---|
| 28 | </indexterm>
|
---|
| 29 |
|
---|
| 30 | <sect2 role="package">
|
---|
| 31 | <title>Introduction to OpenSSH</title>
|
---|
| 32 |
|
---|
[8ba08b56] | 33 | <para>
|
---|
| 34 | The <application>OpenSSH</application> package contains
|
---|
[45db70f] | 35 | <command>ssh</command> clients and the <command>sshd</command> daemon.
|
---|
| 36 | This is useful for encrypting authentication and subsequent traffic over
|
---|
| 37 | a network. The <command>ssh</command> and <command>scp</command> commands
|
---|
| 38 | are secure implementations of <command>telnet</command> and
|
---|
| 39 | <command>rcp</command> respectively.
|
---|
[8ba08b56] | 40 | </para>
|
---|
[6b5cc24] | 41 |
|
---|
[ed345e7] | 42 | &lfs120_checked;
|
---|
[6b5cc24] | 43 |
|
---|
[e4e0d060] | 44 | <bridgehead renderas="sect3">Package Information</bridgehead>
|
---|
| 45 | <itemizedlist spacing="compact">
|
---|
| 46 | <listitem>
|
---|
[3a373116] | 47 | <para>
|
---|
| 48 | Download (HTTP): <ulink url="&openssh-download-http;"/>
|
---|
| 49 | </para>
|
---|
[e4e0d060] | 50 | </listitem>
|
---|
| 51 | <listitem>
|
---|
[3a373116] | 52 | <para>
|
---|
| 53 | Download (FTP): <ulink url="&openssh-download-ftp;"/>
|
---|
| 54 | </para>
|
---|
[e4e0d060] | 55 | </listitem>
|
---|
| 56 | <listitem>
|
---|
[3a373116] | 57 | <para>
|
---|
| 58 | Download MD5 sum: &openssh-md5sum;
|
---|
| 59 | </para>
|
---|
[e4e0d060] | 60 | </listitem>
|
---|
| 61 | <listitem>
|
---|
[3a373116] | 62 | <para>
|
---|
| 63 | Download size: &openssh-size;
|
---|
| 64 | </para>
|
---|
[e4e0d060] | 65 | </listitem>
|
---|
| 66 | <listitem>
|
---|
[3a373116] | 67 | <para>
|
---|
| 68 | Estimated disk space required: &openssh-buildsize;
|
---|
| 69 | </para>
|
---|
[e4e0d060] | 70 | </listitem>
|
---|
| 71 | <listitem>
|
---|
[3a373116] | 72 | <para>
|
---|
| 73 | Estimated build time: &openssh-time;
|
---|
| 74 | </para>
|
---|
[e4e0d060] | 75 | </listitem>
|
---|
| 76 | </itemizedlist>
|
---|
[479274d] | 77 | <!--
|
---|
[3806235] | 78 | <bridgehead renderas="sect3">Additional Downloads</bridgehead>
|
---|
| 79 | <itemizedlist spacing="compact">
|
---|
| 80 | <listitem>
|
---|
| 81 | <para>
|
---|
| 82 | Required patch:
|
---|
[f2cb3164] | 83 | <ulink url="&patch-root;/openssh-&openssh-version;-glibc_2.31_fix-1.patch"/>
|
---|
[3806235] | 84 | </para>
|
---|
| 85 | </listitem>
|
---|
| 86 | </itemizedlist>
|
---|
[479274d] | 87 | -->
|
---|
[e4e0d060] | 88 | <bridgehead renderas="sect3">OpenSSH Dependencies</bridgehead>
|
---|
[31427bc] | 89 |
|
---|
[e4e0d060] | 90 | <bridgehead renderas="sect4">Optional</bridgehead>
|
---|
[3a373116] | 91 | <para role="optional">
|
---|
[d38746e] | 92 | <xref linkend="gdb"/> (for tests),
|
---|
[0391649] | 93 | <xref linkend="linux-pam"/> (PAM configuration files from
|
---|
| 94 | <xref linkend="shadow"/> are used to create openssh ones),
|
---|
[6ae11da] | 95 | <xref linkend="xorg7-app"/> (or
|
---|
| 96 | <xref linkend='xorg-env' role='nodep'/>, see Command Explanations),
|
---|
[3a373116] | 97 | <xref linkend="mitkrb"/>,
|
---|
[3b88aed] | 98 | <xref linkend="which"/> (for tests),
|
---|
[cd29bc9] | 99 | <ulink url="https://www.thrysoee.dk/editline/">libedit</ulink>,
|
---|
| 100 | <ulink url="https://www.libressl.org/">LibreSSL Portable</ulink>,
|
---|
[6c6990c] | 101 | <ulink url="https://github.com/OpenSC/OpenSC/wiki">OpenSC</ulink>, and
|
---|
[3a373116] | 102 | <ulink url="http://www.citi.umich.edu/projects/smartcard/sectok.html">libsectok</ulink>
|
---|
| 103 | </para>
|
---|
[9561d7e] | 104 |
|
---|
[409e2e7] | 105 | <bridgehead renderas="sect4">Optional Runtime (Used only to gather entropy)</bridgehead>
|
---|
[3a373116] | 106 | <para role="optional">
|
---|
[b47d633] | 107 | <!--<xref role="runtime" linkend="openjdk"/>, Not seen in 8.8p1 -->
|
---|
[96e9478] | 108 | <xref role="runtime" linkend="net-tools"/>, and
|
---|
| 109 | <xref role="runtime" linkend="sysstat"/>
|
---|
[3a373116] | 110 | </para>
|
---|
[e4e0d060] | 111 |
|
---|
[3a373116] | 112 | <para condition="html" role="usernotes">
|
---|
[42ddc30] | 113 | Editor Notes: <ulink url="&blfs-wiki;/OpenSSH"/>
|
---|
[3a373116] | 114 | </para>
|
---|
[e4e0d060] | 115 | </sect2>
|
---|
| 116 |
|
---|
| 117 | <sect2 role="installation">
|
---|
| 118 | <title>Installation of OpenSSH</title>
|
---|
| 119 |
|
---|
[3a373116] | 120 | <para>
|
---|
| 121 | <application>OpenSSH</application> runs as two processes when connecting
|
---|
| 122 | to other computers. The first process is a privileged process and controls
|
---|
| 123 | the issuance of privileges as necessary. The second process communicates
|
---|
| 124 | with the network. Additional installation steps are necessary to set up
|
---|
| 125 | the proper environment, which are performed by issuing the following
|
---|
| 126 | commands as the <systemitem class="username">root</systemitem> user:
|
---|
| 127 | </para>
|
---|
[e4e0d060] | 128 |
|
---|
[f9f9172] | 129 | <screen role="root"><userinput>install -v -g sys -m700 -d /var/lib/sshd &&
|
---|
[59382ab] | 130 |
|
---|
[6c6990c] | 131 | groupadd -g 50 sshd &&
|
---|
| 132 | useradd -c 'sshd PrivSep' \
|
---|
| 133 | -d /var/lib/sshd \
|
---|
| 134 | -g sshd \
|
---|
| 135 | -s /bin/false \
|
---|
| 136 | -u 50 sshd</userinput></screen>
|
---|
[479274d] | 137 | <!--
|
---|
[3806235] | 138 | <para>
|
---|
| 139 | Apply a patch to allow OpenSSH to build and function with
|
---|
[f2cb3164] | 140 | <application>Glibc-2.31</application> and later:
|
---|
[3806235] | 141 | </para>
|
---|
| 142 |
|
---|
[f2cb3164] | 143 | <screen><userinput remap="pre">patch -Np1 -i ../openssh-&openssh-version;-glibc_2.31_fix-1.patch</userinput></screen>
|
---|
[8558044] | 144 | -->
|
---|
[5d2965c] | 145 |
|
---|
| 146 | <!-- Applied in 8.5p1
|
---|
[66d223b] | 147 | <para>
|
---|
| 148 | First, adapt <application>ssh-copy-id</application> to changes
|
---|
| 149 | in bash-5.1:
|
---|
| 150 | </para>
|
---|
| 151 |
|
---|
| 152 | <screen><userinput remap="pre">sed -e '/INSTALLKEYS_SH/s/)//' -e '260a\ )' -i contrib/ssh-copy-id</userinput></screen>
|
---|
| 153 |
|
---|
[79eec369] | 154 | <para>
|
---|
| 155 | Next, fix an issue on platforms other than x86_64:
|
---|
| 156 | </para>
|
---|
| 157 | <screen><userinput remap="pre">if [ "$(uname -m)" != "x86_64" ]; then
|
---|
| 158 | l1="#ifdef __NR_pselect6_time64"
|
---|
| 159 | l2=" SC_ALLOW(__NR_pselect6_time64),"
|
---|
| 160 | l3="#endif"
|
---|
| 161 | sed -e "/^#ifdef __NR_read$/ i $l1\n$l2\n$l3" \
|
---|
| 162 | -i sandbox-seccomp-filter.c
|
---|
| 163 | fi</userinput></screen>
|
---|
[5d2965c] | 164 | -->
|
---|
[3a373116] | 165 | <para>
|
---|
| 166 | Install <application>OpenSSH</application> by running the following
|
---|
| 167 | commands:
|
---|
| 168 | </para>
|
---|
[0931098] | 169 |
|
---|
[e7dc117] | 170 | <!-- -\-with-md5-passwords used to be here, but a comment inside of a <screen>
|
---|
| 171 | block leaves an eyesore. -->
|
---|
[1a3d7fb2] | 172 | <screen><userinput>./configure --prefix=/usr \
|
---|
| 173 | --sysconfdir=/etc/ssh \
|
---|
| 174 | --with-privsep-path=/var/lib/sshd \
|
---|
| 175 | --with-default-path=/usr/bin \
|
---|
| 176 | --with-superuser-path=/usr/sbin:/usr/bin \
|
---|
[ca65e1e] | 177 | --with-pid-dir=/run &&
|
---|
[3a3b19b] | 178 | make</userinput></screen>
|
---|
[1b83a7c1] | 179 |
|
---|
[196cbf4] | 180 | <!-- I got all tests passed without this with 9.3p1, June 12, 2023.
|
---|
[3a373116] | 181 | <para>
|
---|
[48771ae] | 182 | The test suite requires an installed copy of <command>scp</command> to
|
---|
[bc6e56d] | 183 | complete the multiplexing tests. To run the test suite, first copy the
|
---|
| 184 | <command>scp</command> program to
|
---|
| 185 | <filename class="directory">/usr/bin</filename>, making sure that you
|
---|
[45db70f] | 186 | backup any existing copy first.
|
---|
[3a373116] | 187 | </para>
|
---|
[196cbf4] | 188 | -->
|
---|
[81a0948] | 189 | <!-- I got all tests passed without this with 9.0p1. Apr 13, 2022.
|
---|
[9556a94] | 190 | <para>
|
---|
| 191 | If you wish to run the tests, remove a test suite that is not valid on
|
---|
| 192 | Linux-based platforms:
|
---|
| 193 | </para>
|
---|
| 194 |
|
---|
| 195 | <screen><userinput>sed -i 's/conch-ciphers//' regress/Makefile</userinput></screen>
|
---|
[81a0948] | 196 | -->
|
---|
[5a6a6be] | 197 | <para>
|
---|
[7c017a3] | 198 | To test the results, issue: <command>make -j1 tests</command>.
|
---|
[21552cf] | 199 | <!--One test, <filename>key options</filename>, fails when run in chroot.-->
|
---|
[5a6a6be] | 200 | </para>
|
---|
| 201 |
|
---|
| 202 | <!-- commenting this, I get "all tests passed" [ ken ]
|
---|
| 203 | NB tests should be run as _user_ but the role in the comment is root
|
---|
[59382ab] | 204 |
|
---|
| 205 | commenting [ bruce ]: There are a couple of tests that want root.
|
---|
[6c6990c] | 206 | The log mentions that SUDO is not set. These skipped tests are
|
---|
[59382ab] | 207 | ignored and the end says 'all tests passed' even when not root
|
---|
| 208 |
|
---|
[3a373116] | 209 | <para>
|
---|
| 210 | To run the test suite, issue the following commands:
|
---|
| 211 | </para>
|
---|
[7c9e252] | 212 |
|
---|
[409e2e7] | 213 | <screen role="root"><userinput>make tests 2>&1 | tee check.log
|
---|
| 214 | grep FATAL check.log</userinput></screen>
|
---|
[7c9e252] | 215 |
|
---|
[3a373116] | 216 | <para>
|
---|
| 217 | If the above command produces no 'FATAL' errors, then proceed with the
|
---|
| 218 | installation, as the <systemitem class="username">root</systemitem> user:
|
---|
[5a6a6be] | 219 | </para>-->
|
---|
| 220 | <para>
|
---|
| 221 | Now, as the <systemitem class="username">root</systemitem> user:
|
---|
[3a373116] | 222 | </para>
|
---|
[7c9e252] | 223 |
|
---|
[6c6990c] | 224 | <screen role="root"><userinput>make install &&
|
---|
| 225 | install -v -m755 contrib/ssh-copy-id /usr/bin &&
|
---|
| 226 |
|
---|
| 227 | install -v -m644 contrib/ssh-copy-id.1 \
|
---|
| 228 | /usr/share/man/man1 &&
|
---|
[5ee1266] | 229 | install -v -m755 -d /usr/share/doc/openssh-&openssh-version; &&
|
---|
[6c6990c] | 230 | install -v -m644 INSTALL LICENCE OVERVIEW README* \
|
---|
| 231 | /usr/share/doc/openssh-&openssh-version;</userinput></screen>
|
---|
[e4e0d060] | 232 | </sect2>
|
---|
| 233 |
|
---|
| 234 | <sect2 role="commands">
|
---|
| 235 | <title>Command Explanations</title>
|
---|
| 236 |
|
---|
[3a373116] | 237 | <para>
|
---|
| 238 | <parameter>--sysconfdir=/etc/ssh</parameter>: This prevents the
|
---|
| 239 | configuration files from being installed in
|
---|
| 240 | <filename class="directory">/usr/etc</filename>.
|
---|
| 241 | </para>
|
---|
| 242 |
|
---|
[1a3d7fb2] | 243 | <para>
|
---|
| 244 | <parameter>--with-default-path=/usr/bin</parameter> and
|
---|
| 245 | <parameter>--with-superuser-path=/usr/sbin:/usr/bin</parameter>:
|
---|
| 246 | These set <envar>PATH</envar> consistent with LFS and BLFS
|
---|
| 247 | <application>Shadow</application> package.
|
---|
| 248 | </para>
|
---|
| 249 |
|
---|
| 250 | <para>
|
---|
| 251 | <parameter>--with-pid-dir=/run</parameter>: This prevents
|
---|
[2c87187] | 252 | <application>OpenSSH</application> from referring to deprecated
|
---|
[1a3d7fb2] | 253 | <filename class="directory">/var/run</filename>.
|
---|
| 254 | </para>
|
---|
| 255 |
|
---|
[ecab0590] | 256 | <para>
|
---|
| 257 | <parameter>--without-zlib-version-check</parameter>: This prevents
|
---|
| 258 | <application>OpenSSH</application> from checking the version of
|
---|
| 259 | the system <application>Zlib</application>. We need to use this
|
---|
| 260 | switch or the version check would mistakenly report the latest
|
---|
| 261 | <application>Zlib</application> 1.13 <quote>too old</quote> and
|
---|
| 262 | reject it.
|
---|
| 263 | </para>
|
---|
| 264 |
|
---|
[3a373116] | 265 | <para>
|
---|
[f1d7196] | 266 | <option>--with-pam</option>: This parameter enables
|
---|
[3a373116] | 267 | <application>Linux-PAM</application> support in the build.
|
---|
| 268 | </para>
|
---|
| 269 |
|
---|
| 270 | <para>
|
---|
[6ae11da] | 271 | <option>--with-xauth=$XORG_PREFIX/bin/xauth</option>: Set the default
|
---|
[3a373116] | 272 | location for the <command>xauth</command> binary for X authentication.
|
---|
[6ae11da] | 273 | The environment variable <envar>XORG_PREFIX</envar> should be set
|
---|
| 274 | following <xref linkend='xorg-env'/>. This can also be controlled from
|
---|
[3a373116] | 275 | <filename>sshd_config</filename> with the XAuthLocation keyword. You can
|
---|
| 276 | omit this switch if <application>Xorg</application> is already installed.
|
---|
| 277 | </para>
|
---|
| 278 |
|
---|
| 279 | <para>
|
---|
[f1d7196] | 280 | <option>--with-kerberos5=/usr</option>: This option is used to
|
---|
[3a373116] | 281 | include Kerberos 5 support in the build.
|
---|
| 282 | </para>
|
---|
[409e2e7] | 283 |
|
---|
[ba0004e] | 284 | <para>
|
---|
[f1d7196] | 285 | <option>--with-libedit</option>: This option enables line editing
|
---|
[ba0004e] | 286 | and history features for <command>sftp</command>.
|
---|
| 287 | </para>
|
---|
| 288 |
|
---|
[e4e0d060] | 289 | </sect2>
|
---|
| 290 |
|
---|
| 291 | <sect2 role="configuration">
|
---|
| 292 | <title>Configuring OpenSSH</title>
|
---|
| 293 |
|
---|
| 294 | <sect3 id="openssh-config">
|
---|
| 295 | <title>Config Files</title>
|
---|
| 296 |
|
---|
[3a373116] | 297 | <para>
|
---|
| 298 | <filename>~/.ssh/*</filename>,
|
---|
[e4e0d060] | 299 | <filename>/etc/ssh/ssh_config</filename>, and
|
---|
[3a373116] | 300 | <filename>/etc/ssh/sshd_config</filename>
|
---|
| 301 | </para>
|
---|
[e4e0d060] | 302 |
|
---|
| 303 | <indexterm zone="openssh openssh-config">
|
---|
| 304 | <primary sortas="e-AA.ssh">~/.ssh/*</primary>
|
---|
| 305 | </indexterm>
|
---|
| 306 |
|
---|
| 307 | <indexterm zone="openssh openssh-config">
|
---|
| 308 | <primary sortas="e-etc-ssh-ssh_config">/etc/ssh/ssh_config</primary>
|
---|
| 309 | </indexterm>
|
---|
| 310 |
|
---|
| 311 | <indexterm zone="openssh openssh-config">
|
---|
| 312 | <primary sortas="e-etc-ssh-sshd_config">/etc/ssh/sshd_config</primary>
|
---|
| 313 | </indexterm>
|
---|
| 314 |
|
---|
[3a373116] | 315 | <para>
|
---|
| 316 | There are no required changes to any of these files. However,
|
---|
| 317 | you may wish to view the
|
---|
| 318 | <filename class='directory'>/etc/ssh/</filename> files and make any
|
---|
| 319 | changes appropriate for the security of your system. One recommended
|
---|
| 320 | change is that you disable
|
---|
| 321 | <systemitem class='username'>root</systemitem> login via
|
---|
| 322 | <command>ssh</command>. Execute the following command as the
|
---|
| 323 | <systemitem class='username'>root</systemitem> user to disable
|
---|
| 324 | <systemitem class='username'>root</systemitem> login via
|
---|
| 325 | <command>ssh</command>:
|
---|
| 326 | </para>
|
---|
[e4e0d060] | 327 |
|
---|
[6c24da75] | 328 | <screen role="root"><userinput>echo "PermitRootLogin no" >> /etc/ssh/sshd_config</userinput></screen>
|
---|
| 329 |
|
---|
[3a373116] | 330 | <para>
|
---|
| 331 | If you want to be able to log in without typing in your password, first
|
---|
| 332 | create ~/.ssh/id_rsa and ~/.ssh/id_rsa.pub with
|
---|
| 333 | <command>ssh-keygen</command> and then copy ~/.ssh/id_rsa.pub to
|
---|
| 334 | ~/.ssh/authorized_keys on the remote computer that you want to log into.
|
---|
[f507f06] | 335 | You'll need to change REMOTE_USERNAME and REMOTE_HOSTNAME for the username and hostname of the remote
|
---|
| 336 | computer and you'll also need to enter your password for the ssh-copy-id command
|
---|
[3a373116] | 337 | to succeed:
|
---|
| 338 | </para>
|
---|
| 339 |
|
---|
| 340 | <screen><userinput>ssh-keygen &&
|
---|
[f507f06] | 341 | ssh-copy-id -i ~/.ssh/id_rsa.pub <replaceable>REMOTE_USERNAME</replaceable>@<replaceable>REMOTE_HOSTNAME</replaceable></userinput></screen>
|
---|
[3a373116] | 342 |
|
---|
| 343 | <para>
|
---|
| 344 | Once you've got passwordless logins working it's actually more secure
|
---|
| 345 | than logging in with a password (as the private key is much longer than
|
---|
| 346 | most people's passwords). If you would like to now disable password
|
---|
| 347 | logins, as the <systemitem class="username">root</systemitem> user:
|
---|
| 348 | </para>
|
---|
| 349 |
|
---|
| 350 |
|
---|
| 351 | <screen role="root"><userinput>echo "PasswordAuthentication no" >> /etc/ssh/sshd_config &&
|
---|
[4d15c65] | 352 | echo "KbdInteractiveAuthentication no" >> /etc/ssh/sshd_config</userinput></screen>
|
---|
[3a373116] | 353 |
|
---|
| 354 | <para>
|
---|
[f586237] | 355 | If you added <application>Linux-PAM</application> support and you want
|
---|
[3a373116] | 356 | ssh to use it then you will need to add a configuration file for
|
---|
| 357 | <application>sshd</application> and enable use of
|
---|
| 358 | <application>LinuxPAM</application>. Note, ssh only uses PAM to check
|
---|
| 359 | passwords, if you've disabled password logins these commands are not
|
---|
[f586237] | 360 | needed. If you want to use PAM, issue the following commands as the
|
---|
[3a373116] | 361 | <systemitem class='username'>root</systemitem> user:
|
---|
| 362 | </para>
|
---|
[6c24da75] | 363 |
|
---|
| 364 | <screen role="root"><userinput>sed 's@d/login@d/sshd@g' /etc/pam.d/login > /etc/pam.d/sshd &&
|
---|
[b30ddee] | 365 | chmod 644 /etc/pam.d/sshd &&
|
---|
[5a6a6be] | 366 | echo "UsePAM yes" >> /etc/ssh/sshd_config</userinput></screen>
|
---|
[e4e0d060] | 367 |
|
---|
[3a373116] | 368 | <para>
|
---|
| 369 | Additional configuration information can be found in the man
|
---|
| 370 | pages for <command>sshd</command>, <command>ssh</command> and
|
---|
| 371 | <command>ssh-agent</command>.
|
---|
| 372 | </para>
|
---|
[e4e0d060] | 373 | </sect3>
|
---|
| 374 |
|
---|
| 375 | <sect3 id="openssh-init">
|
---|
[f586237] | 376 | <title><phrase revision="sysv">Boot Script</phrase>
|
---|
| 377 | <phrase revision="systemd">Systemd Unit</phrase></title>
|
---|
[e4e0d060] | 378 |
|
---|
[f586237] | 379 | <para revision="sysv">
|
---|
[3a373116] | 380 | To start the SSH server at system boot, install the
|
---|
[3c7bd00] | 381 | <filename>/etc/rc.d/init.d/sshd</filename> init script included
|
---|
[f586237] | 382 | in the <xref linkend="bootscripts"/> package.
|
---|
| 383 | </para>
|
---|
| 384 |
|
---|
| 385 | <para revision="systemd">
|
---|
| 386 | To start the SSH server at system boot, install the
|
---|
| 387 | <filename>sshd.service</filename> unit included in the
|
---|
| 388 | <xref linkend="systemd-units"/> package.
|
---|
[3c7bd00] | 389 | </para>
|
---|
[e4e0d060] | 390 |
|
---|
| 391 | <indexterm zone="openssh openssh-init">
|
---|
| 392 | <primary sortas="f-sshd">sshd</primary>
|
---|
| 393 | </indexterm>
|
---|
| 394 |
|
---|
| 395 | <screen role="root"><userinput>make install-sshd</userinput></screen>
|
---|
| 396 | </sect3>
|
---|
| 397 | </sect2>
|
---|
| 398 |
|
---|
| 399 | <sect2 role="content">
|
---|
| 400 | <title>Contents</title>
|
---|
| 401 |
|
---|
| 402 | <segmentedlist>
|
---|
| 403 | <segtitle>Installed Programs</segtitle>
|
---|
[c3c56b2] | 404 | <segtitle>Installed Libraries</segtitle>
|
---|
[e4e0d060] | 405 | <segtitle>Installed Directories</segtitle>
|
---|
| 406 |
|
---|
| 407 | <seglistitem>
|
---|
[3a373116] | 408 | <seg>
|
---|
[5d2965c] | 409 | scp, sftp, <!--slogin (symlink to ssh),--> ssh, ssh-add, ssh-agent,
|
---|
[b2b7378b] | 410 | ssh-copy-id, ssh-keygen, ssh-keyscan, and sshd
|
---|
[c3c56b2] | 411 | </seg>
|
---|
| 412 | <seg>
|
---|
| 413 | None
|
---|
[3a373116] | 414 | </seg>
|
---|
| 415 | <seg>
|
---|
| 416 | /etc/ssh,
|
---|
[c175983] | 417 | /usr/share/doc/openssh-&openssh-version;, and
|
---|
| 418 | /var/lib/sshd
|
---|
[3a373116] | 419 | </seg>
|
---|
[e4e0d060] | 420 | </seglistitem>
|
---|
| 421 | </segmentedlist>
|
---|
| 422 |
|
---|
| 423 | <variablelist>
|
---|
| 424 | <bridgehead renderas="sect3">Short Descriptions</bridgehead>
|
---|
| 425 | <?dbfo list-presentation="list"?>
|
---|
| 426 | <?dbhtml list-presentation="table"?>
|
---|
| 427 |
|
---|
| 428 | <varlistentry id="scp">
|
---|
| 429 | <term><command>scp</command></term>
|
---|
| 430 | <listitem>
|
---|
[3a373116] | 431 | <para>
|
---|
| 432 | is a file copy program that acts like <command>rcp</command> except
|
---|
[4c24eb0a] | 433 | it uses an encrypted protocol
|
---|
[3a373116] | 434 | </para>
|
---|
[e4e0d060] | 435 | <indexterm zone="openssh scp">
|
---|
| 436 | <primary sortas="b-scp">scp</primary>
|
---|
| 437 | </indexterm>
|
---|
| 438 | </listitem>
|
---|
| 439 | </varlistentry>
|
---|
| 440 |
|
---|
| 441 | <varlistentry id="sftp">
|
---|
| 442 | <term><command>sftp</command></term>
|
---|
| 443 | <listitem>
|
---|
[3a373116] | 444 | <para>
|
---|
[4c24eb0a] | 445 | is an FTP-like program that works over the SSH1 and SSH2 protocols
|
---|
[3a373116] | 446 | </para>
|
---|
[e4e0d060] | 447 | <indexterm zone="openssh sftp">
|
---|
| 448 | <primary sortas="b-sftp">sftp</primary>
|
---|
| 449 | </indexterm>
|
---|
| 450 | </listitem>
|
---|
| 451 | </varlistentry>
|
---|
[5d2965c] | 452 | <!-- Not installed anymore as of 8.5p1
|
---|
[e4e0d060] | 453 | <varlistentry id="slogin">
|
---|
| 454 | <term><command>slogin</command></term>
|
---|
| 455 | <listitem>
|
---|
[3a373116] | 456 | <para>
|
---|
[4c24eb0a] | 457 | is a symlink to <command>ssh</command>
|
---|
[3a373116] | 458 | </para>
|
---|
[e4e0d060] | 459 | <indexterm zone="openssh slogin">
|
---|
[b960e3ec] | 460 | <primary sortas="b-slogin">slogin</primary>
|
---|
[e4e0d060] | 461 | </indexterm>
|
---|
| 462 | </listitem>
|
---|
| 463 | </varlistentry>
|
---|
[5d2965c] | 464 | -->
|
---|
[e4e0d060] | 465 | <varlistentry id="ssh">
|
---|
| 466 | <term><command>ssh</command></term>
|
---|
| 467 | <listitem>
|
---|
[3a373116] | 468 | <para>
|
---|
| 469 | is an <command>rlogin</command>/<command>rsh</command>-like client
|
---|
[4c24eb0a] | 470 | program except it uses an encrypted protocol
|
---|
[3a373116] | 471 | </para>
|
---|
[e4e0d060] | 472 | <indexterm zone="openssh ssh">
|
---|
| 473 | <primary sortas="b-ssh">ssh</primary>
|
---|
| 474 | </indexterm>
|
---|
| 475 | </listitem>
|
---|
| 476 | </varlistentry>
|
---|
| 477 |
|
---|
| 478 | <varlistentry id="sshd">
|
---|
| 479 | <term><command>sshd</command></term>
|
---|
| 480 | <listitem>
|
---|
[3a373116] | 481 | <para>
|
---|
[4c24eb0a] | 482 | is a daemon that listens for <command>ssh</command> login requests
|
---|
[3a373116] | 483 | </para>
|
---|
[e4e0d060] | 484 | <indexterm zone="openssh sshd">
|
---|
| 485 | <primary sortas="b-sshd">sshd</primary>
|
---|
| 486 | </indexterm>
|
---|
| 487 | </listitem>
|
---|
| 488 | </varlistentry>
|
---|
| 489 |
|
---|
| 490 | <varlistentry id="ssh-add">
|
---|
| 491 | <term><command>ssh-add</command></term>
|
---|
| 492 | <listitem>
|
---|
[3a373116] | 493 | <para>
|
---|
[4c24eb0a] | 494 | is a tool which adds keys to the <command>ssh-agent</command>
|
---|
[3a373116] | 495 | </para>
|
---|
[e4e0d060] | 496 | <indexterm zone="openssh ssh-add">
|
---|
| 497 | <primary sortas="b-ssh-add">ssh-add</primary>
|
---|
| 498 | </indexterm>
|
---|
| 499 | </listitem>
|
---|
| 500 | </varlistentry>
|
---|
| 501 |
|
---|
| 502 | <varlistentry id="ssh-agent">
|
---|
| 503 | <term><command>ssh-agent</command></term>
|
---|
| 504 | <listitem>
|
---|
[3a373116] | 505 | <para>
|
---|
[4c24eb0a] | 506 | is an authentication agent that can store private keys
|
---|
[3a373116] | 507 | </para>
|
---|
[e4e0d060] | 508 | <indexterm zone="openssh ssh-agent">
|
---|
| 509 | <primary sortas="b-ssh-agent">ssh-agent</primary>
|
---|
| 510 | </indexterm>
|
---|
| 511 | </listitem>
|
---|
| 512 | </varlistentry>
|
---|
| 513 |
|
---|
[5a2f5972] | 514 | <varlistentry id="ssh-copy-id">
|
---|
| 515 | <term><command>ssh-copy-id</command></term>
|
---|
| 516 | <listitem>
|
---|
| 517 | <para>
|
---|
[5d2965c] | 518 | is a script that enables logins on remote machines using local keys
|
---|
[5a2f5972] | 519 | </para>
|
---|
| 520 | <indexterm zone="openssh ssh-copy-id">
|
---|
| 521 | <primary sortas="b-ssh-copy-id">ssh-copy-id</primary>
|
---|
| 522 | </indexterm>
|
---|
| 523 | </listitem>
|
---|
| 524 | </varlistentry>
|
---|
| 525 |
|
---|
[e4e0d060] | 526 | <varlistentry id="ssh-keygen">
|
---|
| 527 | <term><command>ssh-keygen</command></term>
|
---|
| 528 | <listitem>
|
---|
[3a373116] | 529 | <para>
|
---|
[4c24eb0a] | 530 | is a key generation tool
|
---|
[3a373116] | 531 | </para>
|
---|
[e4e0d060] | 532 | <indexterm zone="openssh ssh-keygen">
|
---|
| 533 | <primary sortas="b-ssh-keygen">ssh-keygen</primary>
|
---|
| 534 | </indexterm>
|
---|
| 535 | </listitem>
|
---|
| 536 | </varlistentry>
|
---|
| 537 |
|
---|
| 538 | <varlistentry id="ssh-keyscan">
|
---|
| 539 | <term><command>ssh-keyscan</command></term>
|
---|
| 540 | <listitem>
|
---|
[3a373116] | 541 | <para>
|
---|
[4c24eb0a] | 542 | is a utility for gathering public host keys from a number of hosts
|
---|
[3a373116] | 543 | </para>
|
---|
[e4e0d060] | 544 | <indexterm zone="openssh ssh-keyscan">
|
---|
| 545 | <primary sortas="b-ssh-keyscan">ssh-keyscan</primary>
|
---|
| 546 | </indexterm>
|
---|
| 547 | </listitem>
|
---|
| 548 | </varlistentry>
|
---|
| 549 |
|
---|
| 550 | </variablelist>
|
---|
| 551 | </sect2>
|
---|
[4c24eb0a] | 552 |
|
---|
[e4e0d060] | 553 | </sect1>
|
---|