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Kudos0

Odd networking issue, along with random devices.

Hey there, so I noticed yesterday I was having a sluggish network for the last few days. I went into the Core app and it seemed everything is fine. I decided to download a network scanner and found a bunch of random devices. At the time of the scanning I was the only one on the network and it showed all the random IPs. When I scanned those for services I got port 53 for DNS and when scanning my Core I received 53, 80, 81,82 and 83 and 2601 zebra for services. I don’t have a network printer or USB. Is this normal? Thanks!

Replies

Kudos0

Re: Odd networking issue, along with random devices.

Hello Azgee Yes port 53 is for DNS queries. Regarding port 2601, that is another issue needing more info from you. First what is your configuration to Core and what are the devices KNOWN to be in the network? Is there another router connected upstream, IE an older unpatched NETGEAR router or the like? Are you using Telnet or have it enabled on ANY of your devices? Any other security solutions running on other machines on the network other than Norton? Here are two article where I present my reasoning: https://community.netgear.com/t5/Nighthawk-WiFi-Routers/R7500v1-Zebra-VTY-Vunerability/td-p/1181372

https://www.speedguide.net/port.php?port=2601

Cheers

Retired military (Navy 1980-2002) "From DOS to Windows10 what a journey it has been" / MS Certified Professional / Windows 10 Professional x 64 version 1803 / build 17134.319 / NSBU 22.15.1.8 / Norton Core v.267
Kudos0

Re: Odd networking issue, along with random devices.

Currently I run a Netgear modem and I have my Core hooked directly to it. When I was doing all this testing all other devices were powered down and not connected to the network. I have an iPad, iMac, xbox and firestick connected to a guest network on the core. The Xbox has a port 3074 it utilizes judging from its network screen. I don’t have any file sharing enabled on any devices. On my main network I have just two iPhones. I do not have any port forwarding, upnp or usb printer. To the best of my knowledge I don’t have any telnet running anywhere, or I have never configured it to run. As for security solutions, if you are referring to network wise no, I use the Norton for firewall. The thing is all those IPs that were showing up (20 some “clients” at one point) I do not have the majority of. The way it seems to assign IP addresses is it’ll assign 172.16.1.2 and then jump to 172.16.2.1 and continually go forward from there changing the second to last number. All devices are running their up to date firmwares.

Kudos0

Re: Odd networking issue, along with random devices.

Azgee Following up to see whether the latest Core firmware update to version 229 corrected any of your issue.

Cheers

Retired military (Navy 1980-2002) "From DOS to Windows10 what a journey it has been" / MS Certified Professional / Windows 10 Professional x 64 version 1803 / build 17134.319 / NSBU 22.15.1.8 / Norton Core v.267
Kudos0

Re: Odd networking issue, along with random devices.

I reset it completely and have the same issues, however, now I picked up another issue. The router will not update to 229, it stays at 226. It’s been over 2 weeks like this.
Kudos0

Re: Odd networking issue, along with random devices.

Hi Azgee,

Could you shake your phone and email the logs? Please sure to include your forum username and the title of this thread to the 'issue description'. And please send me a private message with your Norton Core serial number.

Thanks,
Gayathri

Gayathri R | Norton Forums Administrator | Symantec Corporation
Kudos0

Re: Odd networking issue, along with random devices.

Azgee What DNS value do you have currently set? If Norton (default) change to your ISP, the core should restart itself but at times doesn't. Power cycle the Core and recheck that the settings indeed changed. Recheck after a short while to see what version shows for your firmware. Keep in mind it MAY take a bit for the cloud to recognize that you need the update. Let us know your results.

Edited: Our posts crossed Gayathri. Sorry.

Cheers

Retired military (Navy 1980-2002) "From DOS to Windows10 what a journey it has been" / MS Certified Professional / Windows 10 Professional x 64 version 1803 / build 17134.319 / NSBU 22.15.1.8 / Norton Core v.267
Kudos0

Re: Odd networking issue, along with random devices.

Hello Azgee, just following up to see if you changed your DNS as was suggested and what your status is either way.

Cheers

Retired military (Navy 1980-2002) "From DOS to Windows10 what a journey it has been" / MS Certified Professional / Windows 10 Professional x 64 version 1803 / build 17134.319 / NSBU 22.15.1.8 / Norton Core v.267

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