Monitoring if a remote IP is connected to particular local port

Root, Paul T Paul.Root at CenturyLink.com
Wed Jan 8 22:03:46 CET 2020


Hi,
                I've got an application that has a specific port open 11001, that multiple connections, most looped back on itself.

                However, we have another server (that is another groups machine, and isn't monitored by Xymon), that connects to this port.

                Reading the analysis.cfg man page, it looks like criteria is either local or remote, not both.

                Is there a way to monitor this situation?

# netstat -ant |grep 11001
tcp        0      0 0.0.0.0:11001               0.0.0.0:*                   LISTEN
tcp        0      0 192.168.30.15:11001       192.168.30.15:37852       ESTABLISHED
tcp        0      0 192.168.30.15:37852       192.168.30.15:11001       ESTABLISHED
tcp        0      0 192.168.30.15:37864       192.168.30.15:11001       ESTABLISHED
tcp        0      0 192.168.30.15:37856       192.168.30.15:11001       ESTABLISHED
tcp        0      0 192.168.30.15:11001       172.28.104.66:39904           ESTABLISHED
tcp        0      0 192.168.30.15:11001       192.168.30.15:37862       ESTABLISHED
tcp       81      0 192.168.30.15:11001       204.155.140.230:53680       ESTABLISHED
tcp      486      0 192.168.30.15:11001       172.28.104.66:39910           ESTABLISHED
tcp        0      0 192.168.30.15:11001       204.155.140.230:53682       ESTABLISHED
tcp        0      0 192.168.30.15:11001       204.155.140.230:53679       ESTABLISHED
tcp        0      0 192.168.30.15:37862       192.168.30.15:11001       ESTABLISHED
tcp       34      0 192.168.30.15:11001       192.168.30.15:37864       ESTABLISHED
tcp        0      0 192.168.30.15:11001       192.168.30.15:37856       ESTABLISHED


Paul Root
Lead Operations Engineer    - IT Managed Services
390 Commerce Dr
Woodbury, Mn 55125
651-312-5207  paul.root at centurylink.com

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