I would like to be able to allow connections from all host IP's, but be able to block connections from any client-versions that we have not deployed. Is there a way to do this? For example I've found, that almost all 'crackers' use 'libssh-0.2' but our users use 'PuTTY-Release-XXXX' so we can freely block 'libssh-0.x' we use: # ssh -V OpenSSH_4.7p1-hpn13v1, OpenSSL 0.9.8g 19 Oct 2007 # cat /etc/gentoo-release Gentoo Base System release 1.12.11.1 -- Denis Kot denis?jabber.org.by ICQ: 13680126 Mobil: +375 29 6-1234-78