Check OpenSSH version and update instructions on FreeBSD system
On a FreeBSD system (8.1), I am looking for instructions on how to check the running version of OpenSSH and also instructions on the best way to download install an update of OpenSSH
Run sshd -V or ssh -V and they'll return the version and usage information.
Note: These are capital "V" now, when I originally wrote this answer they were lower case.
There's a dozen ways to upgrade.
pkg-add -r openssh-portablecd /usr/ports/security/openssh && make install cleanportupgrade security/openssh-portable- part of the makeworld/buildworld process
- freebsd-upgrade
- and the list goes on...
I'm not aware of any issues with the 5.2p1 version that shipped with 8.1-RELEASE. I have seen hoax e-mails flying around for over a year now announcing the imminent release of a zero day hack (note that it's been a year and a half since release, so 'zero' day was a heck of a long time ago).
telnet localhost 22
Why do you want to upgrade OpenSSH? It's part of the core system and is usually upgraded with the system.
How to find openssh version on a Linux or Unix-like system?
The syntax is as follows to find openssh version on a CentOS/RHEL/SL:
# yum list installed openssh\*
The syntax is as follows to find openssh version on a Debian/Ubuntu Linux:
$ dpkg --list | grep openssh
### OR ###
$ dpkg --list openssh\*
