nrpe - high port connection from nrpe agent to nagois server?

[Terry]

Hello,

I am seeing these rules on our firewall and don't understand them.

Jul 17 13:00:20 10.98.1.1 %ASA-6-106015: Deny TCP (no connection) from
10.51.1.20/5666 to 10.98.1.120/56716 flags RST  on interface VLAN51

The nagios server is able to hit the agent on 5666 just fine but why
would the agent try to connect back to the nagios server on a high
port?

Thanks!

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