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Windows 7 Blocking Inbound UDP

Its appears Windows 7 Firewall (32-bit) is blocking inbound UDP traffic and it is causing the Cisco VPN connection to drop.  We have create new rules to allow outbound/inbound traffic on port 500 and enabled ForceNAT-T parameters, but the connection still drops. Any recommendations? I have attached the lastest log.            

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New Member

Windows 7 Blocking Inbound UDP

Hi,

Is the above setup working with firwall disabled?

The logs shows the inbound UDP drops. But the TCP sent and receive works fine. We can try TCP ecapsulation of IPSec and ISAKMP packets. If it's not mandatory for you to use UDP then make sure you enable it on both ends (client and headend device).

Router: crypto isakmp ctcp port

ASA: crypto isakmp ipsec-over-tcp

Found this link, may be of your help in changing the policies of Windows firewall,

http://windows.microsoft.com/en-us/windows-vista/open-a-port-in-windows-firewall

TnR,

RV

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