On Sun, Jan 15, 2006 at 11:45:35AM -0500, Dave Feustel wrote: > I now have a working ssh connection to a computer on > my subnet by using the (hardwired) ip address in the > known_hosts file. How can ssh be used to connect to a > computer with a (variable) dhcp-assigned ip address, > given that the ip address can change at any time?
I do this although not on a LAN with DHCP addressing but on the Internet on several computers registering to a self-made lookup service. On a LAN with DHCP you may be able to configure Dynamic DNS to identify what hosts have what IP address. You should take care of the StrictHostKeyChecking which will complain that a known hosts will have a different Public Host Key. You'll get those "this could mean a man-in-middle attack" type messages which you'll have to ignore and possibly edit the .ssh/known_hosts to get rid of any entries there. Also you won't really know for sure what host is what so it's probably safer to resort to rsa/dsa key authentication as password authentication should be avoided since the host behind an IP could be a malicious host with purpose to gobble up passwords. Cheers, -peter
