Cisco 800 Router what is Port 10000?

I have a Cisco 800 router on the network that acts as gateway/isp router.

When I run a nmap scan to the cisco IP address

NMAP returns

Interesting ports on 192.168.10.1:
10000/tcp open  snet-sensor-mgmt?

Can someone tell me why this port is open and what is the function of this service?
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ensermoAsked:
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JFrederick29Commented:
The 800 is a VPN router, correct?  TCP 10000 is used for TCP encapsulation of IPSEC traffic.  If not running VPN, check the NAT statements on the router for a TCP 10000 port forward.
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ensermoAuthor Commented:
It is running indeed VPN. (Site-to-site) to another Cisco Router.

Thus port 10000 is a VPN port. The snet-sensor-mgmt is just a wrong "service" by NMAP?
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JFrederick29Commented:
Are you scanning the LAN IP on the Cisco or the WAN/external IP?  NMAP probably just associates TCP 10000 with snet-sensor-mgmt which is why it reports that service.
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ensermoAuthor Commented:
The LAN IP(internal). Ok. So it is VPN related. Just checking that no strange services where running.
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