When I do a port scan on my router (nmap the result is:

22/tcp   open  ssh
23/tcp   open  telnet
53/tcp   open  domain
80/tcp   open  http
443/tcp  open  https
4567/tcp open  tram

Everything pretty much looks normal except for the last one, the tram service on port 4567. What is this? Is it something I should be worried about? I've found a few references online talking about it being a Verizon thing, for updating firmware etc. But my ISP is Century Link. The router is an Actiontec C1000A VDSL.

Using Shields Up! to probe my router, I have found that port 4567 is indeed open to the outside world.

Does anyone here know what the "tram" service is?

port 4567 open

  • This is an actiontec thing, not an ISP thing - it is common to Actiontec routers and is indeed for firmware updates. If you are concerned, then it is best to run this from an external site, to the public IP of the router.
    – Paul
    Commented Oct 28, 2014 at 2:03


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