TCP Port 104 – acr-nema

About TCP Port 104

Port 104 carries the IANA assignment for acr-nema. The IANA description reads: ‘ACR-NEMA Digital Imag. & Comm. 300’. 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 104. 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 104:

• 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 104 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).