I'm trying to connect Ispconfig to Blesta. When I put in the correct information I get: A connection to the server could not be established. Please check to ensure that the Hostname, User Name, and Password are correct. This is from Blesta: If it is unable to make a connection, then it's highly likely that if your module configuration is correct, your firewall is blocking the outgoing connection. ISPConfig appears to use TCP port 8080 egress, which is a non-standard port and must be open at your firewall on your Blesta server. It's also critical that your server be able to resolve hostnames, having valid resolvers in /etc/resolv.conf. If you are using a hostname, and it can't translate that to the IP address, that would also prevent a connection. What do I do to my firewall to see if that's the problem? Or How do I fix?
make sure that port 8080 on the ispconfig server is accessible from whatever ip's the blesta server is using. and that port 443 on the blesta server is accessible from whatever ip's the ispconfig server is using.
telnet <fqdn> <port number> if it's open and accessible it'll connect. otherwise it's either not listening on that port (service / app not running) or there's something blocking it, that could be a firewall at either end, or some firewall/routing/nat problem somewhere between the two servers.
