Skip to content
The XG Series hardware appliances will reach end-of-life (EOL) on March 31, 2025. Click here to see the XG to XGS migration documentation.

Page permalink

Always use the following permalink when referencing this page. It will remain unchanged in future help versions.

https://docs.sophos.com/nsg/sophos-firewall/21.0/Help/en-us/webhelp/onlinehelp/index.html?contextId=system-services-reserved-ports

Reserved ports

Sophos Firewall reserves some ports for system services. These ports are reserved even when the services aren't in use.

Note

You can't use the reserved ports for any other feature of the firewall.

List of reserved ports

Reserved ports
4 11 22
23 24 25
41 53 58
109 142 161
179 197 198
273 299 300
414 415 417
418 419 464
500 514 546
547 885 886
992 994 1211
1415 1701 1723
1813 2121 2600
2709 2712 2718
2727 2736 2745
2754 2755 3001
3306 3400 3410
4128 4455 4500
4501 5432 5433
5434 5555 5685
5900 to 6000 6009 6060
6061 6177 6277
6379 6783 6789
7830 7831 8005
8009 8088 8089
8090 8347 8384
9006 9595 9687
9922 11001 to 11010 25315
25316 36878 39175
43076 49093 65001 to 65039
65123 65353

More resources