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Port requirements -- RPC?

 
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Port requirements -- RPC?
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captsam25



Joined: 28 Apr 2021
Posts: 2
Country: United States

Post Port requirements -- RPC? Reply with quote
Our security team wants to know why our server is listening on Port 111 (RPC). Is it required? Or is it something that just got started for something and never went away? Server is Red Hat Linux.

Code:
Proto Recv-Q Send-Q Local Address               Foreign Address             State
$ netstat -a | grep sunrpc
tcp        0      0 *:sunrpc                    *:*                         LISTEN
tcp        0      0 *:sunrpc                    *:*                         LISTEN
udp        0      0 *:sunrpc                    *:*
udp        0      0 *:sunrpc                    *:*


Wed Apr 28, 2021 3:48 pm View user's profile Send private message
SysOp
Site Admin


Joined: 26 Nov 2006
Posts: 7459

Post Reply with quote
Is that related to 24x7?
24x7 Scheduler isn't using that port by default.
Wed Apr 28, 2021 6:02 pm View user's profile Send private message
captsam25



Joined: 28 Apr 2021
Posts: 2
Country: United States

Post Reply with quote
SysOp wrote:
Is that related to 24x7?
24x7 Scheduler isn't using that port by default.


Interesting. No telling how it got added, then. The box is set up like an NFS server, but with no file systems exported. Just sitting there listening on Port 111 for a call that's never coming.

Appreciate the information!
Wed Apr 28, 2021 7:30 pm View user's profile Send private message
SysOp
Site Admin


Joined: 26 Nov 2006
Posts: 7459

Post Reply with quote
RPC is not used by our products. You can try blocking that port in the firewall.
Thu Apr 29, 2021 10:16 am View user's profile Send private message
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