Pattern update and Synchronization not working after SFOS 16.05.4 MR-4 update

Hi Vishvas,

Apart from the pattern update and synchronization issue, do the clients behind the XG successfully access the internet? Take SSH to the XG and go to option, 5.Device Management > 3. Advance Console. Execute the following commands and show me the results.

1. ping 8.8.8.8
2. telnet <available mail server IP if any> 25
3. wget sophos.com

Cheers-

Hi Sachingurung,

I have the same issue with pattern updates after upgrading to 16.05.4 MR-4. I'm able to ping 8.8.8.8 from the console but hostnames are not resolved, so there is a DNS issue. Also "Test mail" on notification settings tab is failing to resolve the mail server.

The XG DNS service though seem to work properly and resolves requests from clients. 

Best regards, Anders

The same here. Neither the appliance has access to the internet (unless I type an IP) nor my devices in my network. Aside, DNS doesn't resolve internal xy.home.lan anymore too. A restart of the DNS server helps, however, this doesn't materialize as a permanent solution. Sometimes connections work for hours, sometimes not even a minute.

After upgrade I also had problem with Client . Client machines were not able to get DNS and if i restarted DNS service they use to work. So I have gone back to MR3.

Need fix to this issue as soon as possible.

Hi All,

Show me the DNS configuration in the XG firewall. Any help with the #4.1.2 in my troubleshooting guide. Also, is there a parent proxy deployement in the network?

Thanks

Unfortunately no luck with the troubleshooting guide. There is only one ISP link. I've tried to restart the DNS service and the XG appliance as well. DNS lookups from the web interface works fine on all available DNS servers. No proxy deployment. After downgrading to MR-3 the pattern updates and mail notifications work fine again.

I'm not experiencing any DNS issues on the clients. 

Provide me some time to check it internally. I will update you with as much information I can gather. 

Thanks

Provide me some time to check it internally. I will update you with as much information I can gather. 

Thanks

For the sake of completeness: an upgrade to MR5 does solve the Home User 6 vs. 4 GB problem, however, it still contains the unmotivated "loss of DNS"-error

Thanks for looking into it, sachingurung!

Upgraded to MR5 and more than 12 hours no dns issue