AT&T VPN Gateway Firewall Ports
If the VPN Gateway is installed behind a firewall, the following ports need to be opened for normal operations.
PORT | PROTOCOL | DIRECTION | APPLICATION |
---|---|---|---|
ESP(50) |
in/out | IPSec Tunnel | |
9 | UDP, TCP | out | Upstream Bandwidth Test |
13 | TCP | out | Time Synchronization |
20 | TCP | in | FTP Data Channel for Code Upgrades |
20 | ICMP | out | Proactive Monitor Request |
21 | TCP | out | FTP Control Channel for Code Upgrades |
21 | ICMP | in | Proactive Monitor Response |
22 | TCP | in | SSH Remote Management |
53 | UDP | out | Client DNS and WAN Connectivity Testing |
443 | TCP | in | HTTPS Remote Management |
500 | UDP | in/out | IPSec ISAKMP Negotiation |
4500 | UDP | in/out | IPSec NAT-T |
5080 | UDP, TCP | in/out | SM-X - Auth, and VIG Health/ Latency Check |
8080 | TCP | in | HTTPS Remote Management |
9920 | TCP | out | Remote Access Repository Logging |