Colin, When the DHCP client recieves a new IP address it invokes a script called /sbin/dhclient-script . This script has hooks to call user-provided scripts if they exist on enty and on exit. Try "man dhclient-script" or google "linux man dhclient-script" for more information. You should be able to use this to dynamically adjust your sshd_config file specifying the new ListenAddress. Then send SIGHUP to sshd to cause it to re-read the sshd_config file Rick Blasiak Phone: (919)-254-2590 Tieline: 8-444-2590 FAX: (919)-543-7421 Internet: blasiak@xxxxxxxxxx Notes: Richard Blasiak/Raleigh/IBM@IBMUS Colin Wetherbee <cww@xxxxxxxxxxxxxxxx> Sent by: listbounce@xxxxxxxxxxxxxxxxx 12/05/2007 07:57 PM To secureshell@xxxxxxxxxxxxxxxxx cc Subject Two SSH servers on the same machine Greetings. I have a chroot jail used for mod_perl and PostgreSQL development to which I have assigned (in my head, to segregate services) a virtual IP. Outside the jail, one OpenSSH server runs, and I'd like to run another inside the jail. The problem I'm facing is that I want the jailed SSH server to use one IP and the un-jailed SSH server to use the remaining IPs on the machine. I'm familiar with the ListenAddress directive, but this doesn't seem to be a solution to my problem because one of the un-jailed IPs is dynamic. My ideal solution would be to tell the un-jailed SSH server to "use all IPs except 192.168.171.100", but I don't know if this is possible. Here's a synopsis of the configuration. Un-jailed IPs: eth0 a.b.c.d dynamic eth3 192.168.171.65 static lo 127.0.0.1/8 static Jailed IP: eth3:0 192.168.171.100 static The machine is running OpenSSH_4.3p2 Debian-9, OpenSSL 0.9.8e 23 Feb 2007. I'd appreciate any configuration tips. Thanks! Colin
