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Random lose internet.

BrianTesoroni

Randomly users lose internet for no reason. They only way to get back on is to disconnect and reconnect. The following is my hardware details:

 

G210 (SFOS 16.05.4 MR-4)

AP Firmware : 8.0.001 AP55C



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  • 0

    Same problem here!! Since update to SFOS 16.05.4 MR-4 I must restart my Sophos home every 1-2 days, because  we can´t reach any webpages. But VPN connection works normal. After restart all works fine an than 1-2 days later same Problem. VPN works fine. But I can´t reach webpages.

  • 0 in reply to DirkJung

    This happen with the firmware before this one. The internet works fine but then it goes really slow or eventually stops working. I have to disconnect from my wireless connection and re-connect. 

  • +1 in reply to lferrara

    Same Problem here with mr5.

    I think it´s a problem with the DNS Server. VPN is stable only webpage access doesn´t go after 1-2 days.

    Now I changed from ISP DNS-Server to static DNS an take the google DNS-Servers 8.8.8.8 and 8.8.4.4 as static DNS Servers.

    Now webpage access is stable for 3 days.

    I think this solution solved my Problem.

     

    Dirk

  • 0 in reply to DirkJung

    I am back to MR3. And I agree, it seems to be the DNS server. A restart of the DNS service helps in my case. For both, the XG appliance and network clients.

     

    My system is affected although its DNS is customized with Static DNS Server addresses from my provider. MR4 and MR5 show above mentioned behavior.

     

    I am curious and I am going to check it again, with one little change in my settings:

    I did maintain the last/3rd entry for a static DNS with the IP address of the XG appliance (LAN) itself. Only if I applied it that way, I could nslookup DNS entries from my internal LAN from within the XG gui. I just deleted this entry and found out, that network clients still resolve names, even if static DNS entries only refer to public DNSs.

     

    In test mode for MR5 now :D

    ===================================================

    Sophos XG Home User - SuperMicro Appliance 8GB - SFOS v16.05.5 MR5

  • 0 in reply to Norbert Schmidt

    DNS stopped working again. And it seems, that DNS server gets killed if a VPN Cisco connection is opened. Check this thread, which DomNik initiated: DNS Server stops working for LAN Zones after Cisco VPN is established . I tested it just now and can confirm the problem.

     

    It would be great to see whether you too can replicate this behavior or potential root cause.

     

    Thanks

    ===================================================

    Sophos XG Home User - SuperMicro Appliance 8GB - SFOS v16.05.5 MR5

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