INSTALL - third_party/openssh-portable - Git at Google

 1. Prerequisites
 ----------------

 You will need working installations of Zlib and OpenSSL.

 Zlib:
 http://www.gzip.org/zlib/

 OpenSSL 0.9.6 or greater:
 http://www.openssl.org/

 (OpenSSL 0.9.5a is partially supported, but some ciphers (SSH protocol 1
 Blowfish included) do not work correctly.)

 RPMs of OpenSSL are available at http://violet.ibs.com.au/openssh/files/support.
 For Red Hat Linux 6.2, they have been released as errata.  RHL7 includes
 these.

 OpenSSH can utilise Pluggable Authentication Modules (PAM) if your system
 supports it. PAM is standard on Redhat and Debian Linux, Solaris and
 HP-UX 11.

 NB. If you operating system supports /dev/random, you should configure
 OpenSSL to use it. OpenSSH relies on OpenSSL's direct support of
 /dev/random. If you don't you will have to rely on ssh-rand-helper, which
 is inferior to a good kernel-based solution.

 PAM:
 http://www.kernel.org/pub/linux/libs/pam/

 If you wish to build the GNOME passphrase requester, you will need the GNOME
 libraries and headers.

 GNOME:
 http://www.gnome.org/

 Alternatively, Jim Knoble <jmknoble@jmknoble.cx> has written an excellent X11
 passphrase requester. This is maintained separately at:

 http://www.ntrnet.net/~jmknoble/software/x11-ssh-askpass/index.html

 PRNGD:

 If your system lacks Kernel based random collection, the use of Lutz
 Jaenicke's PRNGd is recommended.

 http://www.aet.tu-cottbus.de/personen/jaenicke/postfix_tls/prngd.html

 EGD:

 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.

 http://www.lothar.com/tech/crypto/

 S/Key Libraries:
 http://www.sparc.spb.su/solaris/skey/

 If you wish to use --with-skey then you will need the above library
 installed.  No other current S/Key library is currently known to be
 supported.

 2. Building / Installation
 --------------------------

 To install OpenSSH with default options:

 ./configure
 make
 make install

 This will install the OpenSSH binaries in /usr/local/bin, configuration files
 in /usr/local/etc, the server in /usr/local/sbin, etc. To specify a different
 installation prefix, use the --prefix option to configure:

 ./configure --prefix=/opt
 make
 make install

 Will install OpenSSH in /opt/{bin,etc,lib,sbin}. You can also override
 specific paths, for example:

 ./configure --prefix=/opt --sysconfdir=/etc/ssh
 make
 make install

 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 may need to manually install a PAM control
 file as "/etc/pam.d/sshd" (or wherever your system prefers to keep
 them).  Note that the service name used to start PAM is __progname,
 which is the basename of the path of your sshd (e.g., the service name
 for /usr/sbin/osshd will be osshd).  If you have renamed your sshd
 executable, your PAM configuration may need to be modified.

 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 Red Hat 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.  On HP-UX 11 and Solaris, the standard /etc/pam.conf
 configuration will work with sshd (sshd will match the other service
 name).

 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.

 --with-pam enables PAM support.

 --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-prngd-socket=/some/file allows you to enable EGD or PRNGD
 support and to specify a PRNGd socket. Use this if your Unix lacks
 /dev/random and you don't want to use OpenSSH's builtin entropy
 collection support.

 --with-prngd-port=portnum allows you to enable EGD or PRNGD support
 and to specify a EGD localhost TCP port. Use this if your Unix lacks
 /dev/random and you don't want to use OpenSSH's builtin entropy
 collection support.

 --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.

 --without-lastlog will disable lastlog support entirely.

 --with-sia, --without-sia will enable or disable OSF1's Security
 Integration Architecture.  The default for OSF1 machines is enable.

 --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=PATH will enable S/Key one time password support. You will
 need the S/Key libraries and header files installed for this to work.

 --with-tcp-wrappers will enable TCP Wrappers (/etc/hosts.allow|deny)
 support. You will need libwrap.a and tcpd.h installed.

 --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.

 --with-opensc=DIR
 --with-sectok=DIR allows for OpenSC or sectok smartcard libraries to
 be used with OpenSSH.  See 'README.smartcard' for more details.

 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" LDFLAGS="-s" LIBS="-lrubbish" LD="/usr/foo/ld" ./configure

 3. Configuration
 ----------------

 The runtime configuration files are installed by in ${prefix}/etc or
 whatever you specified as your --sysconfdir (/usr/local/etc by default).

 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, run "make host-key". Alternately you can do so
 manually using the following commands:

     ssh-keygen -t rsa1 -f /etc/ssh/ssh_host_key -N ""
     ssh-keygen -t rsa -f /etc/ssh/ssh_host_rsa_key -N ""
     ssh-keygen -t dsa -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)

 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/


 $Id: INSTALL,v 1.53 2002/05/13 05:22:21 djm Exp $
	1. Prerequisites
	----------------

	You will need working installations of Zlib and OpenSSL.

	Zlib:
	http://www.gzip.org/zlib/

	OpenSSL 0.9.6 or greater:
	http://www.openssl.org/

	(OpenSSL 0.9.5a is partially supported, but some ciphers (SSH protocol 1
	Blowfish included) do not work correctly.)

	RPMs of OpenSSL are available at http://violet.ibs.com.au/openssh/files/support.
	For Red Hat Linux 6.2, they have been released as errata. RHL7 includes
	these.

	OpenSSH can utilise Pluggable Authentication Modules (PAM) if your system
	supports it. PAM is standard on Redhat and Debian Linux, Solaris and
	HP-UX 11.

	NB. If you operating system supports /dev/random, you should configure
	OpenSSL to use it. OpenSSH relies on OpenSSL's direct support of
	/dev/random. If you don't you will have to rely on ssh-rand-helper, which
	is inferior to a good kernel-based solution.

	PAM:
	http://www.kernel.org/pub/linux/libs/pam/

	If you wish to build the GNOME passphrase requester, you will need the GNOME
	libraries and headers.

	GNOME:
	http://www.gnome.org/

	Alternatively, Jim Knoble <jmknoble@jmknoble.cx> has written an excellent X11
	passphrase requester. This is maintained separately at:

	http://www.ntrnet.net/~jmknoble/software/x11-ssh-askpass/index.html

	PRNGD:

	If your system lacks Kernel based random collection, the use of Lutz
	Jaenicke's PRNGd is recommended.

	http://www.aet.tu-cottbus.de/personen/jaenicke/postfix_tls/prngd.html

	EGD:

	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.

	http://www.lothar.com/tech/crypto/

	S/Key Libraries:
	http://www.sparc.spb.su/solaris/skey/

	If you wish to use --with-skey then you will need the above library
	installed. No other current S/Key library is currently known to be
	supported.

	2. Building / Installation
	--------------------------

	To install OpenSSH with default options:

	./configure
	make
	make install

	This will install the OpenSSH binaries in /usr/local/bin, configuration files
	in /usr/local/etc, the server in /usr/local/sbin, etc. To specify a different
	installation prefix, use the --prefix option to configure:

	./configure --prefix=/opt
	make
	make install

	Will install OpenSSH in /opt/{bin,etc,lib,sbin}. You can also override
	specific paths, for example:

	./configure --prefix=/opt --sysconfdir=/etc/ssh
	make
	make install

	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 may need to manually install a PAM control
	file as "/etc/pam.d/sshd" (or wherever your system prefers to keep
	them). Note that the service name used to start PAM is __progname,
	which is the basename of the path of your sshd (e.g., the service name
	for /usr/sbin/osshd will be osshd). If you have renamed your sshd
	executable, your PAM configuration may need to be modified.

	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 Red Hat 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. On HP-UX 11 and Solaris, the standard /etc/pam.conf
	configuration will work with sshd (sshd will match the other service
	name).

	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.

	--with-pam enables PAM support.

	--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-prngd-socket=/some/file allows you to enable EGD or PRNGD
	support and to specify a PRNGd socket. Use this if your Unix lacks
	/dev/random and you don't want to use OpenSSH's builtin entropy
	collection support.

	--with-prngd-port=portnum allows you to enable EGD or PRNGD support
	and to specify a EGD localhost TCP port. Use this if your Unix lacks
	/dev/random and you don't want to use OpenSSH's builtin entropy
	collection support.

	--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.

	--without-lastlog will disable lastlog support entirely.

	--with-sia, --without-sia will enable or disable OSF1's Security
	Integration Architecture. The default for OSF1 machines is enable.

	--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=PATH will enable S/Key one time password support. You will
	need the S/Key libraries and header files installed for this to work.

	--with-tcp-wrappers will enable TCP Wrappers (/etc/hosts.allow\|deny)
	support. You will need libwrap.a and tcpd.h installed.

	--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.

	--with-opensc=DIR
	--with-sectok=DIR allows for OpenSC or sectok smartcard libraries to
	be used with OpenSSH. See 'README.smartcard' for more details.

	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" LDFLAGS="-s" LIBS="-lrubbish" LD="/usr/foo/ld" ./configure

	3. Configuration
	----------------

	The runtime configuration files are installed by in ${prefix}/etc or
	whatever you specified as your --sysconfdir (/usr/local/etc by default).

	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, run "make host-key". Alternately you can do so
	manually using the following commands:

	ssh-keygen -t rsa1 -f /etc/ssh/ssh_host_key -N ""
	ssh-keygen -t rsa -f /etc/ssh/ssh_host_rsa_key -N ""
	ssh-keygen -t dsa -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)

	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/


	$Id: INSTALL,v 1.53 2002/05/13 05:22:21 djm Exp $