From 0b6b94e6b6152f15cf4c2247c5974f539aae28cd Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Wed, 10 Apr 2024 21:49:46 +0200 Subject: Adding upstream version 1:9.6p1. Signed-off-by: Daniel Baumann --- README.platform | 96 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 96 insertions(+) create mode 100644 README.platform (limited to 'README.platform') diff --git a/README.platform b/README.platform new file mode 100644 index 0000000..7b754ba --- /dev/null +++ b/README.platform @@ -0,0 +1,96 @@ +This file contains notes about OpenSSH on specific platforms. + +AIX + +Beginning with OpenSSH 3.8p1, sshd will honour an account's password +expiry settings, where prior to that it did not. Because of this, +it's possible for sites that have used OpenSSH's sshd exclusively to +have accounts which have passwords expired longer than the inactive time +(ie the "Weeks between password EXPIRATION and LOCKOUT" setting in SMIT +or the maxexpired chuser attribute). + +Accounts in this state must have their passwords reset manually by the +administrator. As a precaution, it is recommended that the administrative +passwords be reset before upgrading from OpenSSH <3.8. + +As of OpenSSH 4.0p1, configure will attempt to detect if your version +and maintenance level of AIX has a working getaddrinfo, and will use it +if found. This will enable IPv6 support. If for some reason configure +gets it wrong, or if you want to build binaries to work on earlier MLs +than the build host then you can add "-DBROKEN_GETADDRINFO" to CFLAGS +to force the previous IPv4-only behaviour. + +IPv6 known to work: 5.1ML7 5.2ML2 5.2ML5 +IPv6 known broken: 4.3.3ML11 5.1ML4 + +If you wish to use dynamic libraries that aren't in the normal system +locations (eg IBM's OpenSSL and zlib packages) then you will need to +define the environment variable blibpath before running configure, eg + +blibpath=/lib:/usr/lib:/opt/freeware/lib ./configure \ + --with-ssl-dir=/opt/freeware --with-zlib=/opt/freeware + +If sshd is built with the WITH_AIXAUTHENTICATE option (which is enabled +by default) then sshd checks that users are permitted via the +loginrestrictions() function, in particular that the user has the +"rlogin" attribute set. This check is not done for the root account, +instead the PermitRootLogin setting in sshd_config is used. + +If you are using the IBM compiler you probably want to use CC=xlc rather +than the default of cc. + + +Cygwin +------ +To build on Cygwin, OpenSSH requires the following packages: +gcc, gcc-mingw-core, mingw-runtime, binutils, make, openssl, +openssl-devel, zlib, minres, minires-devel. + + +Darwin and MacOS X +------------------ +Darwin does not provide a tun(4) driver required for OpenSSH-based +virtual private networks. The BSD manpage still exists, but the driver +has been removed in recent releases of Darwin and MacOS X. + +Nevertheless, tunnel support is known to work with Darwin 8 and +MacOS X 10.4 in Point-to-Point (Layer 3) and Ethernet (Layer 2) mode +using a third party driver. More information is available at: + http://www-user.rhrk.uni-kl.de/~nissler/tuntap/ + + +Linux +----- + +Some Linux distributions (including Red Hat/Fedora/CentOS) include +headers and library links in the -devel RPMs rather than the main +binary RPMs. If you get an error about headers, or complaining about a +missing prerequisite then you may need to install the equivalent +development packages. On Redhat based distros these may be openssl-devel, +zlib-devel and pam-devel, on Debian based distros these may be +libssl-dev, libz-dev and libpam-dev. + + +Solaris +------- +If you enable BSM auditing on Solaris, you need to update audit_event(4) +for praudit(1m) to give sensible output. The following line needs to be +added to /etc/security/audit_event: + + 32800:AUE_openssh:OpenSSH login:lo + +The BSM audit event range available for third party TCB applications is +32768 - 65535. Event number 32800 has been chosen for AUE_openssh. +There is no official registry of 3rd party event numbers, so if this +number is already in use on your system, you may change it at build time +by configure'ing --with-cflags=-DAUE_openssh=32801 then rebuilding. + + +Platforms using PAM +------------------- +As of OpenSSH 4.3p1, sshd will no longer check /etc/nologin itself when +PAM is enabled. To maintain existing behaviour, pam_nologin should be +added to sshd's session stack which will prevent users from starting shell +sessions. Alternatively, pam_nologin can be added to either the auth or +account stacks which will prevent authentication entirely, but will still +return the output from pam_nologin to the client. -- cgit v1.2.3