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125 lines
4.1 KiB
125 lines
4.1 KiB
# vim:tw=80:ft=txt
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README FOR SOLARIS INSTALLATIONS
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By Roy Sigurd Karlsbakk <roy@karlsbakk.net>
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ABOUT
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This readme is meant for those wanting to install fail2ban on Solaris 10,
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OpenSolaris, OpenIndiana etc. To some degree it may as well be useful for
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users of older Solaris versions and Nexenta, but don't rely on it.
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READ ME FIRST
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If I use the term Solaris, I am talking about any Solaris dialect, that is, the
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official Sun/Oracle ones or derivates. If I describe an OS as
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"OpenSolaris-based", it means it's either OpenSolaris, OpenIndiana or one of the
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other, but /not/ the Nexenta family, since this only uses the OpenSolaris/
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IllumOS kernel and not the userland. If I say Solaris 10, I mean Solaris 10 and
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perhaps, if you're lucky and have some good gods on your side, it may also apply
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to Solaris 9 or even 8 and hopefully in the new Solaris 11 whenever that may be
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released. Quoted lines of code, settings et cetera are indented with two spaces.
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This does _not_ mean you should use that indentation, especially in config files
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where they can be harmful. Optional settings are prefixed with OPT: while
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required settings are prefixed with REQ:. If no prefix is found, regard it as a
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required setting.
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INSTALLATION ON SOLARIS
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The installation is straight forward on Solaris as well as on linux/bsd/etc.
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./setup.py install installs the general packages in /usr/bin on OpenSolaris-
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based distros or (at least on this box) under /usr/sfw/bin on Solaris 10. In
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the files/ directory you will find the file solaris-fail2ban.xml containing the
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Solaris service. To install this, run the following command as root (or with
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sudo):
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svccfg import files/solaris-fail2ban.xml
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This should normally without giving an error. If you get an error, deal with it,
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and please post any relevant info (or fixes?) to the fail2ban mailing list.
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Next install the service handler - copy the script in and allow it to be executed:
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cp files/solaris-svc-fail2ban /lib/svc/method/svc-fail2ban
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chmod +x /lib/svc/method/svc-fail2ban
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CONFIGURE SYSLOG
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For some reason, a default Solaris installation does not log ssh login attempts,
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and since fail2ban works by monitoring logs, enabling this logging is rather
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important for it to work. To enable this, edit /etc/syslog.conf and add a line
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at the end:
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auth.info /var/adm/auth.log
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Save the file and exit, and run
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touch /var/adm/auth.log
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The Solaris system logger will _not_ create a non-existing file. Now, restart
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the system logger.
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svcadm restart system-log
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Try to ssh into localhost with ssh asdf@localhost and enter an invalid password.
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Make sure this is logged in the above file. When done, you may configure
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fail2ban.
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FAIL2BAN CONFIGURATION
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OPT: Create /etc/fail2ban/fail2ban.local containing:
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# Fail2Ban configuration file for logging fail2ban on Solaris
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#
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[Definition]
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logtarget = /var/adm/fail2ban.log
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REQ: Create /etc/fail2ban/jail.local containing:
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[ssh-tcpwrapper]
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enabled = true
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filter = sshd
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action = hostsdeny
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sendmail-whois[name=SSH, dest=you@example.com]
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ignoreregex = for myuser from
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logpath = /var/adm/auth.log
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Set the sendmail dest address to something useful or drop the line to stop it spamming you.
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Set 'myuser' to your username to avoid banning yourself or remove the line.
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START (OR RESTART) FAIL2BAN
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Enable the fail2ban service with
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svcadm enable fail2ban
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When done, check that all services are running well
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svcs -xv
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GOTCHAS AND FIXMES
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* It seems the installation may be starting fail2ban automatically. If this is
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done, fail2ban will not start, but no errors will be returned from svcs
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(above). Check if it's running with 'ps -ef | grep fail2ban' and manually kill
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the PID if it is. Re-enable fail2ban and try again
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svcadm disable fail2ban
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svcadm enable fail2ban
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* If svcs -xv says that fail2ban failed to start or svcs says it's in maintenance mode
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check /var/svc/log/network-fail2ban:default.log for clues.
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Check permissions on /var/adm, /var/adm/auth.log /var/adm/fail2ban.log and /var/run/fail2ban
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You may need to:
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sudo mkdir /var/run/fail2ban
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* Fail2ban adds lines like these to /etc/hosts.deny:
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ALL: 1.2.3.4
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wouldn't it be better to just block sshd?
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