11-23-2007 05:58 AM - edited 02-21-2020 03:23 PM
Hello,
I am tring to establish the IPSec VPN Tunnel and getting following error, can anyone have idea about what this error means, I am attaching the error logs, any suggestion are much appreciated.
Thanks in advance.
11-23-2007 05:49 PM
Is the router behind a firewall or a device that is blocking UDP Port 500 and Protocol 50. Based on the debugs, looks like the router is retransmitting UDP Port 500 packets, make sure that you have the above mentioned ports and protocols open.
Regards,
Arul
11-26-2007 05:56 PM
Look to remove keep alives between the two end points.
What are the two end points? ASA? router? Pix?
11-26-2007 07:59 PM
One end is Juniper Netscreen and the remote end is cisco router, these are the logs at the remote end and Cisco router is behind the Firewall.
11-26-2007 08:04 PM
The Cisco router is behind what type of firewall?
11-26-2007 08:13 PM
Not sure about that, as other side is not owned by us.
11-26-2007 08:16 PM
Which parts do you control?
11-26-2007 08:18 PM
Router part at remote end.
11-26-2007 08:36 PM
just to be clear.
Your router sits behind a firewall (unknown details) which is trying to establish a VPN to a Juniper?
11-26-2007 08:44 PM
Juniper is the initiater of the connection and Cisco router is at the receiving end, do you think looking at the logs either udp port500 or protocol50 is blocked by Firewall.
11-26-2007 08:49 PM
It's worthwhile checking that.
But it appears given the logging it would be open.
11-27-2007 11:25 AM
Not sure whether you saw this post. Resposting, just in case.
Is the router behind a firewall or a device that is blocking UDP Port 500 and Protocol 50. Based on the debugs, looks like the router is retransmitting UDP Port 500 packets, make sure that you have the above mentioned ports and protocols open.
Regards,
Arul
11-27-2007 01:15 PM
Found this message in the logs :
vendor ID seems Unity/DPD but major 19 mismatch.
Probably you can try disabling the vendor ID and DPD on both the units.
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