web adapter and joining a site

Discussion created by lewisdw91 on Apr 8, 2013
Latest reply on Apr 9, 2013 by bubbahey25
Is it possible to join a new install to an existing site through the web adapter (assuming port 6080 is blocked by a firewall)? 

Is it necessary to open 6080, 4000-4004, and 4004+ (if clustering), to have servers communicate on both sides of a firewall?