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// Other services

Port 7872: TLS-based Mobile IPv6 Security

Port 7872 is assigned by IANA to mipv6tls (TLS-based Mobile IPv6 Security).

7872

How mipv6tls works

Other services
client:7872mipv6tlsresponse client:7872mipv6tlsresponse

The client sends a request to port 7872 and the mipv6tls service answers.

Transport
UDP
Exposure risk
not rated depends on the program listening
Encryption
Unknownnot stated by the registry
IANA status
Assigned1 registered service
Range
Registered (1024-49151)
Category
Other services
01 Security

Is port 7872 dangerous?

We have no specific security note for port 7872. Its risk depends on the program actually listening on it. General advice for other services services:

  • Close the port if nothing on the host needs it.
  • Identify the process that listens on it (commands below) before opening it in a firewall.
  • Expose a service only to the networks that use it.
02 Registry

IANA registry entries for port 7872

ServicePortTransportDescriptionReferenceUpdated
mipv6tls 7872 UDP TLS-based Mobile IPv6 Security RFC 6618 2012-04-12
-7872-Reserved--

// source: IANA service name and port number registry

03 Check it

Which program uses port 7872, and is it reachable?

Linux

sudo ss -ltnup 'sport = :7872'      # process listening on 7872
sudo lsof -nP -i :7872

macOS

sudo lsof -nP -i :7872

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 7872 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 7872
netstat -ano | findstr :7872

From another machine

nmap -p 7872 -sV <host>
sudo nmap -sU -p 7872 <host>
nc -zv <host> 7872

Block it in the firewall

sudo ufw deny 7872/udp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 7872" -Direction Inbound -LocalPort 7872 -Protocol UDP -Action Block  # Windows
04 FAQ
What is port 7872 used for?

Port 7872 is assigned by IANA to mipv6tls (TLS-based Mobile IPv6 Security).

Is port 7872 TCP or UDP?

Port 7872 is registered for UDP.

Is it safe to open port 7872?

It depends on the program that listens on it. Open it only for a service you know and only to the networks that need it. Close the port if nothing on the host needs it.

How do I check if port 7872 is open?

On Linux run "ss -ltnup 'sport = :7872'", on macOS "lsof -nP -i :7872", and on Windows "netstat -ano | findstr :7872" to see the local process. From another machine, "nmap -p 7872 <host>" shows whether it is reachable.

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