TCP Port 2104 – zephyr-hm

About TCP Port 2104

The Internet Assigned Numbers Authority (IANA) registers port 2104 for zephyr-hm. The IANA description reads: ‘Zephyr hostmanager’. This port is referenced in 2 IDS rules and exhibits low malware activity in monitored traffic.

IDS Rule References

2 IDS / security rules reference TCP port 2104. 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 (2).

Sample rule descriptions for TCP port 2104:

• ET MALWARE Executable contained in DICOM Medical Image PACS DICOM Protocol Transfer
• ET MALWARE Executable contained in DICOM Medical Image Received from PACS DICOM Device

Malware Activity

Some malware indicators are observed on this port.

2 of 2 IDS rules for TCP port 2104 involve malware activity.

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).