TCP Port 427 – svrloc

About TCP Port 427

The Internet Assigned Numbers Authority (IANA) registers port 427 for svrloc. The IANA description reads: ‘Server Location’. This port appears in 1 IDS rule and does not have notable malware activity indicators in our data.

IDS Rule References

1 IDS / security rule reference TCP port 427. Treat that number as context, not a danger score. Many detection rules are written against groups of ports rather than one service, web ports especially, so common web alternate ports inherit large counts while genuinely sensitive services can show few rules or none. Presence in IDS rules does not mean traffic on this port is malicious.

Rule categories (top 1): attempted-admin (1).

Sample rule descriptions for TCP port 427:

• ET EXPLOIT VMWare ESXi 6.7.0 OpenSLP Remote Code Execution Attempt – Directory Agent Advertisement Heap Overflow (CVE-2021-21974)

Data Sources

This information is compiled from: IANA Service Name and Transport Protocol Port Number Registry and Emerging Threats Open Ruleset (BSD 2-Clause / GPLv2 per SID range).