Unusual Increases in Port Scans

Source: SANS Internet Storm Center

Last week, sensors monitoring firewall logs reported a notable upsurge in scans targeting TCP ports 8530 and 8531. This activity appears unusual and warrants closer inspection to understand the motivations behind it. While some reports can be traced back to Shadowserver and other research entities, a portion of the scans originates from unidentified IP addresses that do not align with known research efforts.

The increase in port scanning activity can indicate potential threats or reconnaissance efforts by malicious actors seeking to exploit vulnerabilities. The ambiguity surrounding some of these source IPs raises concerns about the intent and could imply deeper probing of systems that utilize these ports. It is critical for network administrators to monitor such activities closely and implement appropriate security measures to mitigate any associated risks.

👉 Pročitaj original: SANS Internet Storm Center