Introduction
...
RSA appears to be higher security for the following reason,
- Stronger key length as high as 2048 versus DSA which must be 1024
Determine version of Open SSH installed,
Tin-Phams-iMac:~ tinpham$ ssh -V
OpenSSH_5.2p1, OpenSSL 0.9.8l 5 Nov 2009
Tin-Phams-iMac:~ tinpham$ sshd -v
sshd: illegal option -- v
OpenSSH_5.2p1, OpenSSL 0.9.8l 5 Nov 2009
usage: sshd [-46DdeiqTt] [-b bits] [-C connection_spec] [-f config_file]
[-g login_grace_time] [-h host_key_file] [-k key_gen_time]
[-o option] [-p port] [-u len]
Tin-Phams-iMac:~ tinpham$
Resources
http://www.ibm.com/developerworks/library/l-keyc.html - pretty good article, I think I can improve it, shorter, clearly show when running on client or server.
http://serverfault.com/questions/40071/ssh-keypair-generation-rsa-or-dsa - talks about key length