UDP Port 5061 – sips

About UDP Port 5061

Port 5061 is registered with the Internet Assigned Numbers Authority (IANA) for sips. The IANA description reads: ‘SIP-TLS’. This port appears in 4 IDS rules and does not have notable malware activity indicators in our data.

IDS Rule References

4 IDS / security rules reference UDP port 5061. Presence in IDS rules does not mean traffic on this port is malicious. These are patterns security tools monitor.

Rule categories (top 3): attempted-admin (2), protocol-command-decode (1), attempted-recon (1).

Sample rule descriptions for UDP port 5061:

• PROTOCOL-VOIP inbound INVITE message
• PROTOCOL-VOIP Possible SIP OPTIONS service information gathering attempt
• OS-OTHER Bash environment variable injection attempt
• ET EXPLOIT Possible CVE-2014-6271 Attempt Against SIP Proxy

Data Sources

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