4 You will need working installations of Zlib and OpenSSL.
7 http://www.cdrom.com/pub/infozip/zlib/
10 http://www.openssl.org/
12 OpenSSH can utilise Pluggable Authentication Modules (PAM) if your system
13 supports it. PAM is standard on Redhat and Debian Linux and on Solaris.
16 http://www.kernel.org/pub/linux/libs/pam/
18 If you wish to build the GNOME passphrase requestor, you will need the GNOME
19 libraries and headers.
24 If you are planning to use OpenSSH on a Unix which lacks a Kernel random
25 number generator (/dev/urandom), you will need to install the Entropy
26 Gathering Daemon (or similar). You will also need to specify the
27 --with-egd-pool option to ./configure.
30 http://www.lothar.com/tech/crypto/
33 ftp://ftp.gnu.org/gnu/make/
35 OpenSSH has only been tested with GNU make. It may work with other
36 'make' programs, but you are on your own.
38 2. Building / Installation
39 --------------------------
41 To install OpenSSH with default options:
47 This will install the OpenSSH binaries in /usr/local/bin, configuration files
48 in /usr/local/etc, the server in /usr/local/sbin, etc. To specify a different
49 installation prefix, use the --prefix option to configure:
51 ./configure --prefix=/opt
55 Will install OpenSSH in /opt/{bin,etc,lib,sbin}. You can also override
56 specific paths, for example:
58 ./configure --prefix=/opt --sysconfdir=/etc/ssh
62 This will install the binaries in /opt/{bin,lib,sbin}, but will place the
63 configuration files in /etc/ssh.
65 If you are using PAM, you will need to manually install a PAM control
66 file as "/etc/pam.d/sshd" (or wherever your system prefers to keep
67 them). A generic PAM configuration is included as "sshd.pam.generic",
68 you may need to edit it before using it on your system.
70 There are a few other options to the configure script:
72 --enable-gnome-askpass will build the GNOME passphrase dialog. You
73 need a working installation of GNOME, including the development
74 headers, for this to work.
76 --with-random=/some/file allows you to specify an alternate source of
77 random numbers (the default is /dev/urandom). Unless you are absolutly
78 sure of what you are doing, it is best to leave this alone.
80 --with-egd-pool=/some/file allows you to enable Entropy Gathering
81 Daemon support and to specify a EGD pool socket. You will need to
82 use this if your Unix does not support the /dev/urandom device (or
83 similar). The file argument refers to the EGD pool file, not the
84 EGD program itself. Please refer to the EGD documentation.
86 --with-kerberos4 will enable Kerberos IV support. You will need to
87 have the Kerberos libraries and header files installed for this to
90 --with-afs will enable AFS support. You will need to have the Kerberos
91 IV and the AFS libraries and header files installed for this to work.
93 --with-skey will enable S/Key one time password support. You will need
94 the S/Key libraries and header files installed for this to work.
96 --with-tcp-wrappers will enable TCP Wrappers (/etc/hosts.allow|deny)
97 support. You will need libwrap.a and tcpd.h installed.
99 --with-md5-passwords will enable the use of MD5 passwords. Enable this
100 if your operating system uses MD5 passwords without using PAM.
106 The runtime configuration files are installed by in ${prefix}/etc or
107 whatever you specified as your --sysconfdir (/usr/local/etc by default).
109 The default configuration should be instantly usable, though you should
110 review it to ensure that it matches your security requirements.
112 To generate a host key, issue the following command: (replacing
113 /etc/ssh/ssh_host_key with an appropriate path)
115 /usr/bin/ssh-keygen -b 1024 -f /etc/ssh/ssh_host_key -N ''
117 Replacing /etc/ssh with the correct path to the configuration directory.
118 (${prefix}/etc or whatever you specified with --sysconfdir during
121 If you have configured OpenSSH with EGD support, ensure that EGD is
122 running and has collected some Entropy.
124 For more information on configuration, please refer to the manual pages
125 for sshd, ssh and ssh-agent.
130 If you experience problems compiling, installing or running OpenSSH.
131 Please refer to the "reporting bugs" section of the webpage at
132 http://violet.ibs.com.au/openssh/