1999-11-12 03:35:58 +00:00
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1. Prerequisites
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----------------
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You will need working installations of Zlib and OpenSSL.
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Zlib:
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http://www.cdrom.com/pub/infozip/zlib/
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OpenSSL:
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http://www.openssl.org/
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OpenSSH can utilise Pluggable Authentication Modules (PAM) if your system
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supports it. PAM is standard on Redhat and Debian Linux and on Solaris.
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PAM:
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http://www.kernel.org/pub/linux/libs/pam/
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If you wish to build the GNOME passphrase requestor, you will need the GNOME
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libraries and headers.
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GNOME:
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http://www.gnome.org/
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If you are planning to use OpenSSH on a Unix which lacks a Kernel random
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number generator (/dev/urandom), you will need to install the Entropy
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Gathering Daemon (or similar). You will also need to specify the
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--with-egd-pool option to ./configure.
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EGD:
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http://www.lothar.com/tech/crypto/
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2. Building / Installation
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--------------------------
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To install OpenSSH with default options:
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./configure
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make
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make install
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This will install the OpenSSH binaries in /usr/local/bin, configuration files
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in /usr/local/etc, the server in /usr/local/sbin, etc. To specify a different
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installation prefix, use the --prefix option to configure:
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./configure --prefix=/opt
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make
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make install
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Will install OpenSSH in /opt/{bin,etc,lib,sbin}. You can also override
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specific paths, for example:
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./configure --prefix=/opt --sysconfdir=/etc/ssh
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make
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make install
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This will install the binaries in /opt/{bin,lib,sbin}, but will place the
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configuration files in /etc/ssh.
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There are a few other options to the configure script:
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--enable-gnome-askpass will build the GNOME passphrase dialog. You need a
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working installation of GNOME, including the development headers, for this
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to work.
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--with-random=/some/file allows you to specify an alternate source of
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random numbers (the default is /dev/urandom). Unless you are absolutly
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sure of what you are doing, it is best to leave this alone.
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--with-egd-pool=/some/file allows you to enable Entropy Gathering Daemon
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support and to specify a EGD pool socket. You will need to use this if your
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Unix does not support the /dev/urandom device (or similar).
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1999-11-12 04:46:08 +00:00
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--without-askpass will disable X11 password requestor support in ssh-add
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1999-11-12 03:35:58 +00:00
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3. Configuration
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----------------
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The runtime configuration files are installed by in ${prefix}/etc or
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whatever you specified as your --sysconfdir (/usr/local/etc by default).
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The default configuration should be instantly usable, though you should
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review it to ensure that it matches your security requirements.
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1999-11-15 12:34:11 +00:00
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To generate a host key, issue the following command: (replacing
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/etc/ssh/ssh_host_key with an appropriate path)
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/usr/bin/ssh-keygen -b 1024 -f /etc/ssh/ssh_host_key -N ''
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1999-11-12 03:35:58 +00:00
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For more information on configuration, please refer to the manual pages
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for sshd, ssh and ssh-agent.
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