UDP Port 22 – SSH (Secure Shell)

About UDP Port 22

The Internet Assigned Numbers Authority (IANA) registers port 22 for ssh. The IANA description reads: ‘The Secure Shell (SSH) Protocol’. This port is referenced in 1 IDS rule and exhibits low malware activity in monitored traffic.

IDS Rule References

1 IDS / security rule reference UDP port 22. Presence in IDS rules does not mean traffic on this port is malicious. These are patterns security tools monitor.

Rule categories (top 1): trojan-activity (1).

Sample rule descriptions for UDP port 22:

• ET MALWARE BPFDoor V2 UDP Magic Packet Inbound

Malware Activity

Some malware indicators are observed on this port.

1 of 1 IDS rule for UDP port 22 involve malware activity.

Families observed (top 1): BPFDoor (1).

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), Snort Community Rules (GPLv2), and MITRE ATT&CK (Apache 2.0).