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Kudos0

Port 2601

tl;dr: I don't know why port 2601 is open on my router, it seems sort of sketchy and I want to close it, unless someone reassuringly tells me that it's ok.

My network was being a little weird today, so I just did a real basic Nmap scan. I noticed a weird port was open, but filtered, on my Core (Port 2601). Here are the results for it:

Nmap scan report for norton.core (172.16.0.1)

Host is up (0.0021s latency).

Not shown: 993 closed ports

PORT STATE SERVICE

53/tcp open domain

80/tcp open http

81/tcp open hosts2-ns

82/tcp open xfer

83/tcp open mit-ml-dev

84/tcp open ctf

2601/tcp filtered zebra

I run scans every once in a while, but I don't think I've ever noticed this port being open before. When I google it, it seems like an older protocol that wouldn't really be useful for my network (just PCs, a tv, and an xbox). I don't have UPnP enabled, and I never intentionally opened the port either. I talked to a few of their chat support people but they've been pretty clueless, the first one didn't even know what Nmap was. He did, however, say that no ports should be open on my router, which is weird, but none of the people I asked could explain what port 2601 is, or why it was opened on my router, or how to close it.

Can anyone tell me:

1. how to open and close ports on my router itself? not just port forwarding to networked devices through the Core app(nothing shows up on that screen, so port 2601 isn't coming from there), but for the core itself. I'm not quite tech-savvy enough to know how to ssh into it without port 22 open, and trying to access it via IP address in a web browser is blocked.

or 2. if port 2601 is even something I should worry about? again, I'm not very tech savvy, but it seems like an outdated protocol that's just a vulnerability on my network.

Respostas

Kudos0

Re: Port 2601

Hello Nicknac, I am in concert with you that port 2601 should NOT be open on your router. Its main usage is TCP protocol AND can be used via Telnet to gain access into a network. That may not be the case here but is worth investigation. If your personal or ISP device is really old it may be using Zebra as a part of its firmware. Although not malicious it can be an avenue for bad things. Here is a reference for you from the Linksys community. There may be a newer version of firmware for your router which will close these ports, that being said.  If I may ask:

1- Who is the maker of your main router (ISP or personal), what is the model and if you log into the internal settings via web browser you can ascertain the firmware version. Please post that here, I will then look for CVE's listed for your make/model/firmware revision.

Cheers

Retired military (Navy 1980-2002) AO1 (AW) Aviation Warfare Specialist "From DOS to Windows10 what a journey it has been" / MS Certified Professional / Windows 10 Professional x 64 version 1809 / build 17763.379 / NCSP 22.17.0.183 / Norton Core v.278 on Android 1.93
Kudos0

Re: Port 2601

It's a new, high-speed CenturyLink router, so I wouldn't think it uses port 2601. I tried resetting the router (a complete reset, not a reboot) and it updated it's firmware as part of the start up but the port was still open, so that didn't fix it.

Model# is 517 

Firmware version is 181010_270

And again, this could be totally normal and maybe I've just never noticed, but it feels weird and I wish I could get Norton to actually look at it.

Kudos0

Re: Port 2601

Hello

The model and Firmware you provided is for the Core and not for your CenturyLink router. SoulAsylum was interested in knowing that information for the CenturyLink and not for the Core.

Have a Good Night and

Thanks.

Success always occurs in private and failure in full view. Windows 7 Pro 64 bit NSBU 22.17.0.183 Core Firmware 270 I E 11 Chrome latest one
Kudos0

Re: Port 2601

Nicknac. Can you tell us what modem you have, here is a listing of compatible modems for CenturyLink. From what I read there CL support DSL technology which could be the reason you are seeing that port open.

Cheers

Retired military (Navy 1980-2002) AO1 (AW) Aviation Warfare Specialist "From DOS to Windows10 what a journey it has been" / MS Certified Professional / Windows 10 Professional x 64 version 1809 / build 17763.379 / NCSP 22.17.0.183 / Norton Core v.278 on Android 1.93
Kudos0

Re: Port 2601

@Nicknac

 I'm following up with your issue. Did you converse with Century Link about their needing port 2601 on your modem for their services to function?

Retired military (Navy 1980-2002) AO1 (AW) Aviation Warfare Specialist "From DOS to Windows10 what a journey it has been" / MS Certified Professional / Windows 10 Professional x 64 version 1809 / build 17763.379 / NCSP 22.17.0.183 / Norton Core v.278 on Android 1.93

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