ssh username@servername -L <localport>:destinationserver:<destinationport> -N
if you have multiple local addresses, you will want to specify the bind address.followed by a colon. ie:
ssh username@servername -L localbindaddress:<localport>:destinationserver:<destinationport> -N
a ‘*’ is acceptable as the localbindaddress,
Also you will need this if you have a Virtual IP on your machine.