I'm working on the stake clerk machine at the moment, and DNS lookups are failing.
The DNS servers configured by the DHCP server (one of the new firewalls) are, in order
8.8.8.8
4.2.2.2
216.49.176.201
If I stop the service Sophos Client Firewall, DNS lookups work normally. If I restart the service DNS lookups stop working again.
Sophos firewall is blocking DNS queries
-
- Senior Member
- Posts: 760
- Joined: Fri Jan 19, 2007 6:28 pm
-
- New Member
- Posts: 34
- Joined: Wed Dec 28, 2011 2:10 pm
- Location: Lehi, UT, USA
Re: Sophos firewall is blocking DNS queries
Were you able to resolve this problem outside of turning off the Sophos firewall?
We just experienced a similar problem this past Sunday on all three of the clerk computers in one building.
We just experienced a similar problem this past Sunday on all three of the clerk computers in one building.
- johnshaw
- Senior Member
- Posts: 2273
- Joined: Fri Jan 19, 2007 1:55 pm
- Location: Syracuse, UT
Re: Sophos firewall is blocking DNS queries
If you access the Sophos Firewall Logs through the management tool you should be able to see denies for port 53 and it will tell you which rule it is. If a rule has been pushed to Sophos we need to escalate it to the GSC and they can get in touch with someone who can get in touch with someone that will/may address the issue in the future at some point.
“A long habit of not thinking a thing wrong, gives it a superficial appearance of being right, and raises at first a formidable outcry in defense of custom.”
― Thomas Paine, Common Sense
― Thomas Paine, Common Sense
-
- New Member
- Posts: 34
- Joined: Wed Dec 28, 2011 2:10 pm
- Location: Lehi, UT, USA
Re: Sophos firewall is blocking DNS queries
Great advice - I'll check the logs and let you know what I find.JohnShaw wrote:If you access the Sophos Firewall Logs through the management tool you should be able to see denies for port 53 and it will tell you which rule it is. If a rule has been pushed to Sophos we need to escalate it to the GSC and they can get in touch with someone who can get in touch with someone that will/may address the issue in the future at some point.
-
- Senior Member
- Posts: 760
- Joined: Fri Jan 19, 2007 6:28 pm
Re: Sophos firewall is blocking DNS queries
Did you see anything in the logs?
-
- New Member
- Posts: 34
- Joined: Wed Dec 28, 2011 2:10 pm
- Location: Lehi, UT, USA
Re: Sophos firewall is blocking DNS queries
All applications were blocked because of an Invalid Checksum. Global support was unsure how to proceed, and recommended for our circumstance to allow all traffic through the Sophos Firewall and manually set DNS servers.aclawson wrote:Did you see anything in the logs?
-
- Senior Member
- Posts: 760
- Joined: Fri Jan 19, 2007 6:28 pm
Re: Sophos firewall is blocking DNS queries
Sophos is proving to be an unreliable choice. Unfortunately we're probably locked into an <x> year contract where <x> = 3-5 years.
-
- Community Administrator
- Posts: 34485
- Joined: Sat Jan 20, 2007 2:53 pm
- Location: U.S.
Re: Sophos firewall is blocking DNS queries
Sounds like uninstall/reinstall time. Local Unit Support can help you with that.dnorthut wrote:All applications were blocked because of an Invalid Checksum.
Have you searched the Help Center? Try doing a Google search and adding "site:churchofjesuschrist.org/help" to the search criteria.
So we can better help you, please edit your Profile to include your general location.
So we can better help you, please edit your Profile to include your general location.