You will need working installations of Zlib and OpenSSL.
Zlib:
-http://www.cdrom.com/pub/infozip/zlib/
+http://www.freesoftware.com/pub/infozip/zlib/
-OpenSSL:
+OpenSSL 0.9.5a or greater:
http://www.openssl.org/
+RPMs of OpenSSL are available at http://violet.ibs.com.au/openssh/files/support
+
OpenSSH can utilise Pluggable Authentication Modules (PAM) if your system
supports it. PAM is standard on Redhat and Debian Linux and on Solaris.
PAM:
http://www.kernel.org/pub/linux/libs/pam/
-If you wish to build the GNOME passphrase requestor, you will need the GNOME
+If you wish to build the GNOME passphrase requester, you will need the GNOME
libraries and headers.
GNOME:
http://www.gnome.org/
-If you are planning to use OpenSSH on a Unix which lacks a Kernel random
-number generator (/dev/urandom), you will need to install the Entropy
-Gathering Daemon (or similar). You will also need to specify the
---with-egd-pool option to ./configure.
+Alternatively, Jim Knoble <jmknoble@pobox.com> has written an excellent X11
+passphrase requester. This is maintained separately at:
+
+http://www.ntrnet.net/~jmknoble/software/x11-ssh-askpass/index.html
+
+The Entropy Gathering Daemon (EGD) is supported if you have a system which
+lacks /dev/random and don't want to use OpenSSH's internal entropy collection.
EGD:
http://www.lothar.com/tech/crypto/
+GNU Make:
+ftp://ftp.gnu.org/gnu/make/
+
+OpenSSH has only been tested with GNU make. It may work with other
+'make' programs, but you are on your own.
2. Building / Installation
--------------------------
This will install the binaries in /opt/{bin,lib,sbin}, but will place the
configuration files in /etc/ssh.
-If you are using PAM, you will need to manually install a PAM control
-file as "/etc/pam.d/sshd" (or wherever your system prefers to keep
-them). A generic PAM configuration is included as "sshd.pam.generic",
-you may need to edit it before using it on your system.
+If you are using PAM, you will need to manually install a PAM
+control file as "/etc/pam.d/sshd" (or wherever your system
+prefers to keep them). A generic PAM configuration is included as
+"contrib/sshd.pam.generic", you may need to edit it before using it on
+your system. If you are using a recent version of Redhat Linux, the
+config file in contrib/redhat/sshd.pam should be more useful.
+Failure to install a valid PAM file may result in an inability to
+use password authentication.
There are a few other options to the configure script:
+--with-rsh=PATH allows you to specify the path to your rsh program.
+Normally ./configure will search the current $PATH for 'rsh'. You
+may need to specify this option if rsh is not in your path or has a
+different name.
+
+--without-pam will disable PAM support. PAM is automatically detected
+and switched on if found.
+
--enable-gnome-askpass will build the GNOME passphrase dialog. You
need a working installation of GNOME, including the development
headers, for this to work.
--with-random=/some/file allows you to specify an alternate source of
-random numbers (the default is /dev/urandom). Unless you are absolutly
+random numbers (the default is /dev/urandom). Unless you are absolutely
sure of what you are doing, it is best to leave this alone.
--with-egd-pool=/some/file allows you to enable Entropy Gathering
-Daemon support and to specify a EGD pool socket. You will need to
-use this if your Unix does not support the /dev/urandom device (or
-similar).
+Daemon support and to specify a EGD pool socket. Use this if your
+Unix lacks /dev/random and you don't want to use OpenSSH's builtin
+entropy collection support.
---without-askpass will disable X11 password requestor support in
-ssh-add
+--with-lastlog=FILE will specify the location of the lastlog file.
+./configure searches a few locations for lastlog, but may not find
+it if lastlog is installed in a different place.
---with-kerberos4 will enable Kerberos IV support. You will need to
-have the Kerberos libraries and header files installed for this to
-work.
+--without-lastlog will disable lastlog support entirely.
---with-afs will enable AFS support. You will need to have the Kerberos
-IV and the AFS libraries and header files installed for this to work.
+--with-kerberos4=PATH will enable Kerberos IV support. You will need
+to have the Kerberos libraries and header files installed for this
+to work. Use the optional PATH argument to specify the root of your
+Kerberos installation.
+
+--with-afs=PATH will enable AFS support. You will need to have the
+Kerberos IV and the AFS libraries and header files installed for this
+to work. Use the optional PATH argument to specify the root of your
+AFS installation. AFS requires Kerberos support to be enabled.
--with-skey will enable S/Key one time password support. You will need
the S/Key libraries and header files installed for this to work.
--with-md5-passwords will enable the use of MD5 passwords. Enable this
if your operating system uses MD5 passwords without using PAM.
+--with-utmpx enables utmpx support. utmpx support is automatic for
+some platforms.
+
+--without-shadow disables shadow password support.
+
+--with-ipaddr-display forces the use of a numeric IP address in the
+$DISPLAY environment variable. Some broken systems need this.
+
+--with-default-path=PATH allows you to specify a default $PATH for sessions
+started by sshd. This replaces the standard path entirely.
+
+--with-pid-dir=PATH specifies the directory in which the ssh.pid file is
+created.
+
+--with-xauth=PATH specifies the location of the xauth binary
+
+--with-ipv4-default instructs OpenSSH to use IPv4 by default for new
+connections. Normally OpenSSH will try attempt to lookup both IPv6 and
+IPv4 addresses. On Linux/glibc-2.1.2 this causes long delays in name
+resolution. If this option is specified, you can still attempt to
+connect to IPv6 addresses using the command line option '-6'.
+
+--with-ssl-dir=DIR allows you to specify where your OpenSSL libraries
+are installed.
+
+--with-4in6 Check for IPv4 in IPv6 mapped addresses and convert them to
+real (AF_INET) IPv4 addresses. Works around some quirks on Linux.
+
+If you need to pass special options to the compiler or linker, you
+can specify these as environment variables before running ./configure.
+For example:
+
+CFLAGS="-O -m486" LFLAGS="-s" LIBS="-lrubbish" LD="/usr/foo/ld" ./configure
3. Configuration
----------------
The default configuration should be instantly usable, though you should
review it to ensure that it matches your security requirements.
-To generate a host key, issue the following command: (replacing
-/etc/ssh/ssh_host_key with an appropriate path)
+To generate a host key, run "make host-key". Alternately you can do so
+manually using the following commands:
+
+ ssh-keygen -b 1024 -f /etc/ssh/ssh_host_key -N ""
+ ssh-keygen -d -f /etc/ssh/ssh_host_dsa_key -N ""
+
+Replacing /etc/ssh with the correct path to the configuration directory.
+(${prefix}/etc or whatever you specified with --sysconfdir during
+configuration)
-/usr/bin/ssh-keygen -b 1024 -f /etc/ssh/ssh_host_key -N ''
+If you have configured OpenSSH with EGD support, ensure that EGD is
+running and has collected some Entropy.
For more information on configuration, please refer to the manual pages
for sshd, ssh and ssh-agent.
+4. Problems?
+------------
+
+If you experience problems compiling, installing or running OpenSSH.
+Please refer to the "reporting bugs" section of the webpage at
+http://www.openssh.com/
+
andersk / openssh.git / blobdiff