Analytic 1891

Real-time monitoring identifies a Linux process with both a listening socket on an Industrial Control System (ICS) protocol port and an outbound connection to a non-ICS destination, or iptables DNAT/REDIRECT rules added on ICS protocol ports. OT operational-fidelity gate: Alert only when the asset's documented role does not permit the connection and the destination/proxy/service is outside the approved communications profile, with process/service identity used as corroboration where available. Suppress approved vendor support, update repositories, remote operations, failover paths, and documented temporary connectivity.

1. Forbhreathnú

1.1 Tagairtí

1.2 Ceanglais aitheanta

1.3 Rialacháin ghaolmhara

2. Ceanglais aitheanta

3. Rialacháin ghaolmhara

Saincheisteanna nasctha

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