Hi all,
(ASG V7)
Since somewhere today around noon, western european time, all traffic to and from my firewall stopped, except for ICMP and UDP.
Symptoms are: I can ping remote hosts and resolve names even using dns servers outsite my network. But the remote slave DNS located at my ISP can not do AXFR transfers when I update my DNS serials. All outgoing TCP traffic (smtp, http, https etc) is not passing the firewall.
After investigating and trying, I can now reproduce the problem:
- Enabling IM/P2P Security results in above symptoms.
- Disabling IM/P2P Security results in a working firewall, enabling met to write to this forum.
I received 4 pattern updates today before this happened. After that, Up2Date prefetch failed on all 12 servers. Now it has got 3 more pattern updates.
Current Firmware Version: 7.006
Current Pattern version: 3970
Now the firewall is working fine again, even with IM/P2P Security enablded.
Anyone any idea why it stopped working, and now is working fine again?
Is there a known problem with one of the pattern updates?
( Using a Any -> Any -> External network allowed rule for outgoing trafic. For a complete list of my configuration see: https://community.sophos.com/products/unified-threat-management/astaroorg/f/54/t/38467)
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