CPF and VPN Issue [Resolved]

Hello…recently installed CPF and really like it.

My issue is regarding my inability to send/receive email with Microsoft Outlook using my employer’s VPN. I can connect to the VPN just fine. However, when I hit send/receive on Outlook, the status reads “trying to connect” and never changes. Please help!

Thanks in advance,
Channing

Hi cbs34.

If you can connect through the VPN, then the problem is probably down to the rules for Outlook. Would you open Application Monitor and check the rules you have for Outlook, if any. Then post post them here.

toggie

Under Application Control Rules for OUTLOOK.EXE:

Destination = Any
Port = Any
Protocol = TCP/UDP In/Out
Permission = Allow

Do I have the correct settings?

Thanks again!

You might try this, on the Outlook rule - open the rule for editing, go to the Miscellaneous tab, and check “Skip advanced security checks.” It might be, that thru the VPN, Outlook needs a little more “freedom” to connect.

Another possibility with it, do the same thing for your email scanner application rule as well. In fact, do that first, and see if it works, before changing the Outlook rule.

If those don’t work, do this: Go to Activity/Logs, right-click and select “Clear all Logs.” Keep the logs open, and tell Outlook to get your mail. Watch the logs for entries to occur, blocking access to your email server’s IP address. Make a note of those, and post them here.

LM

OK…here is the activity log being activated by Outlook and VPN:

COMODO Firewall Pro Logs

Date Created: 17:55:20 15-03-2007

Log Scope:: Today

Date/Time :2007-03-15 17:55:12
Severity :High
Reporter :Network Monitor
Description: Blocked by Protocol Analysis (Fake or Malformed UDP Packet)
Direction: UDP Incoming
Source: 10.0.0.1:88
Destination: 10.0.0.204:4684
Reason: UDP packet length and the size on the wire(1443 bytes) do not match

Date/Time :2007-03-15 17:55:12
Severity :High
Reporter :Network Monitor
Description: Blocked by Protocol Analysis (Fragmented IP Packet)
Direction: IP Incoming
Source: 10.0.0.1
Destination: 10.0.0.204
Protocol : UDP
Reason: Fragmented IP packets are not allowed

Date/Time :2007-03-15 17:55:12
Severity :High
Reporter :Network Monitor
Description: Blocked by Protocol Analysis (Fake or Malformed UDP Packet)
Direction: UDP Incoming
Source: 10.0.0.1:88
Destination: 10.0.0.204:4678
Reason: UDP packet length and the size on the wire(1443 bytes) do not match

Date/Time :2007-03-15 17:55:07
Severity :High
Reporter :Network Monitor
Description: Blocked by Protocol Analysis (Fragmented IP Packet)
Direction: IP Incoming
Source: 10.0.0.1
Destination: 10.0.0.204
Protocol : UDP
Reason: Fragmented IP packets are not allowed

Date/Time :2007-03-15 17:55:07
Severity :High
Reporter :Network Monitor
Description: Blocked by Protocol Analysis (Fake or Malformed UDP Packet)
Direction: UDP Incoming
Source: 10.0.0.1:88
Destination: 10.0.0.204:4681
Reason: UDP packet length and the size on the wire(1443 bytes) do not match

Date/Time :2007-03-15 17:55:02
Severity :High
Reporter :Network Monitor
Description: Blocked by Protocol Analysis (Fake or Malformed UDP Packet)
Direction: UDP Incoming
Source: 10.0.0.1:88
Destination: 10.0.0.204:4681
Reason: UDP packet length and the size on the wire(1443 bytes) do not match

Date/Time :2007-03-15 17:55:02
Severity :High
Reporter :Network Monitor
Description: Blocked by Protocol Analysis (Fragmented IP Packet)
Direction: IP Incoming
Source: 10.0.0.1
Destination: 10.0.0.204
Protocol : UDP
Reason: Fragmented IP packets are not allowed

Date/Time :2007-03-15 17:55:02
Severity :High
Reporter :Network Monitor
Description: Blocked by Protocol Analysis (Fake or Malformed UDP Packet)
Direction: UDP Incoming
Source: 10.0.0.1:88
Destination: 10.0.0.204:4678
Reason: UDP packet length and the size on the wire(1443 bytes) do not match

Date/Time :2007-03-15 17:54:57
Severity :High
Reporter :Network Monitor
Description: Blocked by Protocol Analysis (Fragmented IP Packet)
Direction: IP Incoming
Source: 10.0.0.1
Destination: 10.0.0.204
Protocol : UDP
Reason: Fragmented IP packets are not allowed

Date/Time :2007-03-15 17:54:57
Severity :High
Reporter :Network Monitor
Description: Blocked by Protocol Analysis (Fake or Malformed UDP Packet)
Direction: UDP Incoming
Source: 10.0.0.1:88
Destination: 10.0.0.204:4675
Reason: UDP packet length and the size on the wire(1443 bytes) do not match

Date/Time :2007-03-15 17:54:52
Severity :High
Reporter :Network Monitor
Description: Blocked by Protocol Analysis (Fragmented IP Packet)
Direction: IP Incoming
Source: 10.0.0.1
Destination: 10.0.0.204
Protocol : UDP
Reason: Fragmented IP packets are not allowed

Date/Time :2007-03-15 17:54:52
Severity :High
Reporter :Network Monitor
Description: Blocked by Protocol Analysis (Fake or Malformed UDP Packet)
Direction: UDP Incoming
Source: 10.0.0.1:88
Destination: 10.0.0.204:4675
Reason: UDP packet length and the size on the wire(1443 bytes) do not match

Date/Time :2007-03-15 17:54:47
Severity :High
Reporter :Network Monitor
Description: Blocked by Protocol Analysis (Fragmented IP Packet)
Direction: IP Incoming
Source: 10.0.0.1
Destination: 10.0.0.204
Protocol : UDP
Reason: Fragmented IP packets are not allowed

Date/Time :2007-03-15 17:54:47
Severity :High
Reporter :Network Monitor
Description: Blocked by Protocol Analysis (Fake or Malformed UDP Packet)
Direction: UDP Incoming
Source: 10.0.0.1:88
Destination: 10.0.0.204:4670
Reason: UDP packet length and the size on the wire(1443 bytes) do not match

Date/Time :2007-03-15 17:54:32
Severity :High
Reporter :Network Monitor
Description: Blocked by Protocol Analysis (Fragmented IP Packet)
Direction: IP Incoming
Source: 10.0.0.1
Destination: 10.0.0.204
Protocol : UDP
Reason: Fragmented IP packets are not allowed

Date/Time :2007-03-15 17:54:32
Severity :High
Reporter :Network Monitor
Description: Blocked by Protocol Analysis (Fake or Malformed UDP Packet)
Direction: UDP Incoming
Source: 10.0.0.1:88
Destination: 10.0.0.204:4670
Reason: UDP packet length and the size on the wire(1443 bytes) do not match

Date/Time :2007-03-15 17:54:27
Severity :High
Reporter :Network Monitor
Description: Blocked by Protocol Analysis (Fragmented IP Packet)
Direction: IP Incoming
Source: 10.0.0.1
Destination: 10.0.0.204
Protocol : UDP
Reason: Fragmented IP packets are not allowed

Date/Time :2007-03-15 17:54:27
Severity :High
Reporter :Network Monitor
Description: Blocked by Protocol Analysis (Fake or Malformed UDP Packet)
Direction: UDP Incoming
Source: 10.0.0.1:88
Destination: 10.0.0.204:4663
Reason: UDP packet length and the size on the wire(1443 bytes) do not match

Date/Time :2007-03-15 17:54:22
Severity :High
Reporter :Network Monitor
Description: Blocked by Protocol Analysis (Fragmented IP Packet)
Direction: IP Incoming
Source: 10.0.0.1
Destination: 10.0.0.204
Protocol : UDP
Reason: Fragmented IP packets are not allowed

Date/Time :2007-03-15 17:54:22
Severity :High
Reporter :Network Monitor
Description: Blocked by Protocol Analysis (Fake or Malformed UDP Packet)
Direction: UDP Incoming
Source: 10.0.0.1:88
Destination: 10.0.0.204:4666
Reason: UDP packet length and the size on the wire(1443 bytes) do not match

End of The Report

Disable Protocol Analysis: Security > Adv > Adv Attck Detect & Prevent > Config > Misc > Do protocol analysis

Disabled and now works like a champ…thanks for the help!