By default ssh binds to ALL ip addresses on a host. For application servers that run 1 or more vservers Richweb changes the sshd config on the main host to listen only on the main host ip address.
Example /etc/ssh/sshd_config entry:
ListenAddress feller.richweb.com
Where feller.richweb.com is a valid /etc/hosts entry.
When changing the ip address of an appliance or app server it is important to correct /etc/hosts and restart sshd.
Richweb will often change the default listen port as well:
Example:
Port 822
Other typical sshd settings:
TCPKeepAlive yes
X11Forwarding no
ClientAliveInterval 120
ClientAliveCountMax 3
UseDNS no
PermitEmptyPasswords no