By default, a good firewall will not allow any traffic on ports other than those specifically allowed (HTTP, FTP and telnet in your case). So you would need to research the security implications of the port that the application uses, then add that port to your firewall allow rules. Note that researching the port means more than the use that you intend for it. The same port might be used for well-known backdoors or worms, or might be used for a more standard service that you might want to also use.
-----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of maheshib Sent: Fri May 10 2002 05:33 To: [EMAIL PROTECTED] Subject: PORT OPENEND ? Hi , I have a unix machine( say host A ) which sits behind a firewall ;gets the IP translated ,connects to a router and then can see another host (say host B ) . Host A can telnet, ping , ftp to Host B . I am running an appication on host a which needs to connect to Host B on a particular port .How can i quickly verify that port is opened .What i need to check on the firewall to make sure it is not a firewall or router issue . Thanks to all . Mibsun _______________________________________________ Firewalls mailing list [EMAIL PROTECTED] For Account Management (unsubscribe, get/change password, etc) Please go to: http://lists.gnac.net/mailman/listinfo/firewalls _______________________________________________ Firewalls mailing list [EMAIL PROTECTED] For Account Management (unsubscribe, get/change password, etc) Please go to: http://lists.gnac.net/mailman/listinfo/firewalls
