2degrees router has blocked some work websites for me!! (Teams/onedrive/sharepoint/work intranet)

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BDFL - Memuneh
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#3123936 5-Sep-2023 19:27

Linux:

How many of you having issues are using the Fritzbox 7590 running software version 7.56?

This afternoon I swapped out my router to the Fritzbox 7530AX and all issues are now gone!

And what would be the difference?

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Linux

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#3123937 5-Sep-2023 19:32

freitasm:

Linux:

How many of you having issues are using the Fritzbox 7590 running software version 7.56?

This afternoon I swapped out my router to the Fritzbox 7530AX and all issues are now gone!

And what would be the difference?

@freitasm The 7530AX updated to 7.57 tonight when I plugged it in so will plug in the 7590 and update it in the next few days and see if that fixes the issue

Edit: I might even roll it back to a previous version

prat33k

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#3123938 5-Sep-2023 19:40

Linux:

@prat33k Which router are you using?

I am using a Sonicwall Firewall as Gateway with their Netgear Router as the Access Point. Interesting to see if this fixed your issue by just upgrading the firmware or it might have cleared some settings in the old router.

This somehow reminds of an issue when I used to work as support at a telco a few years back and there some sort of Malware would play with the settings on the Netcomm router and update the upstream DNS server. This would cause such issues to the customers and usually fix when we update the DNS/reset the router.

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#3123947 5-Sep-2023 20:23

@prat33k I hard reset the 7590 and did not restore from a backup so it was a fresh setup

DimitryD

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#3124009 5-Sep-2023 23:11

DimitryD:

Dochart: Anyone here had issues with using Telegram?

@Dochart - haven't tried but will have a look this evening

@Dochart = Telegram is working fine.

MadEngineer

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#3124012 6-Sep-2023 00:07

I saw teamviewer mentioned here earlier. Get it out of your work environment.

Are you paying for it? Are you ensuring it’s kept up to date? Do you have the ability to instantly turn it off from all devices if a new CVE is notified for a version you have in your environment?

Such tools are used for elevation/lateral movement by hackers. All it takes is one compromised machine and it’s game over for your whole network. There are a plethora of tools/scripts that they can check through in an instant for any software that you may have in a compromised machine and instantly wreck havoc. These tools are often not even detectable as malicious due to being standard command line commands.

https://malware.news/t/attackers-abusing-various-remote-control-tools/64371

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#3124227 6-Sep-2023 17:26

Updated the Fritzbox 7590 OS from 7.56 to 7.57 and all issues with Android Apps / Teams and Microsoft authenticator resolved

michaelmurfy

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#3124241 6-Sep-2023 18:52

@Linux I highly doubt it is router related given the problem is affecting those using different routers also. Almost smells like a path MTU issue. That update only fixes a vulnerability in the web interface, nothing else.

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RunningMan

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#3124242 6-Sep-2023 18:55

Or could be a 2D change and resetting the PPP / IPoE session by rebooting the router is moving you to a different IP pool or similar.

Linux

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#3124244 6-Sep-2023 19:05

michaelmurfy: @Linux I highly doubt it is router related given the problem is affecting those using different routers also. Almost smells like a path MTU issue. That update only fixes a vulnerability in the web interface, nothing else.

2degrees made no changes to my connection and I could switch between the 2 x routers 7590 & 7530ax and replicate the issue

I just went down the road and updated fritz OS on a 7560 and the end user could not believe the difference even using YouTube on his TV the main screen took ages to load now it is back to instant and we tested before and after the update

I read about the vulnerability fix as well but something has changed on the OS

MadEngineer

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#3124245 6-Sep-2023 19:15

For a website that's not working, what happens when you run an nslookup for it?

try the following:

open your webbrowser, try to access onedrive.live.com (I'm assuming you can't and it fails)
open a cmd prompt and run: ipconfig /flushdns
without doing anything else, go right back to the webbrowser and hit f5 to refresh
back on cmd prompt, run: ipconfig /displaydns
copy-paste the result here

Ps, to get to that website your computer and (and router if it's your dns server) need to look up the following:

login.live.com -> login.msa.msidentity.com -> www.tm.lg.prod.aadmsa.trafficmanager.net -> prdv4a.aadg.msidentity.com -> www.tm.v4.a.prd.aadg.akadns.net -> 20.190.167.148

("->" is "resolves as")

If any of those fail to resolve you'll never get to that IP address. (Your results may vary.)

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#3124246 6-Sep-2023 19:18

@MadEngineer the issue was with Android Apps not loading / Teams / MS Authenticator

After update all working again

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#3124247 6-Sep-2023 19:25

^ does that apply to all here, including DimitryD?

You're not on Atlantis anymore, Duncan Idaho.

freitasm

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#3124279 6-Sep-2023 20:49

As above, @Linux the problem was reported originally as some sites not loading. Let's hear from the OP.

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DimitryD

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#3124298 6-Sep-2023 22:40

MadEngineer:

^ does that apply to all here, including DimitryD?

This 7.57 sounds promising! When I try to update though I get an error :(. Will check if someone from 2degrees can run this update on their end and report back once done.

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