Netscreen 500 switching ports during NAT?

[shrubble]

Got a weird one.

We are using a Netscreen 500 appliance to mip/nat a service defined on the device. On several of these connections, the device changes the port number during NATing back to us to a completely random port (it varies each time). One of these connections works fine, the rest are hosed. We have talked to Juniper (they agree there's a problem-- thanks guys!) and updated the firmware on the device.

Anybody else ever deal with this?

Thanks!

"I would rather have a free bottle in front of me, than a pre-frontal lobotomy..."

-Shrubble

http://www.ishrubble.com

 

[Njetscreamer]

Shrubble,

I though NetScreens did NAPT (shown as NAT). If this is the case then I can see that the source port of the traffic would be altered so that the session table can be populated.

However there used to be a fix port option available, have you tried this ?

Kind regards

Njetscreamer