topic Re: source nat with dual ISP configuration having issue. in General Topics

source nat with dual ISP configuration having issue.

LCMember4717 — Sun, 04 Nov 2012 19:29:35 GMT

Hi,

am running panos 4.1.7 on PA-500 , recently i configure two isp on the pa500 for redundancy , i followed the procedure in DOC-3579 everything is fine except for the source nat policy when clicking on commit , it returns that nat rule1 shadows rule2 which leads to after a failover occurs the source nat for primary isp is taking precedence over the source nat for the secondary isp ,, am having a flat network two internet connections very simple and basic setup .

br.

Re: source nat with dual ISP configuration having issue.

mikand — Tue, 06 Nov 2012 08:22:56 GMT

Is it possible for you to post your config?

Re: source nat with dual ISP configuration having issue.

macroview — Tue, 06 Nov 2012 16:23:26 GMT

Hi,

Did you try the DOC-1357?, you can search the keyword "Dual ISP Branch Office Configuration" to find the document.

On the other hand, If you are using the Mgmt Port for your management, I highly recommend you upgrade your box to PanOS to 4.1.8 HF1 / HF3 because 4.1.7 has a bug which you cannot access the PA box via SSH / https until the box rebooted.

Rgd,

Kim

Re: source nat with dual ISP configuration having issue.

sdurga — Tue, 06 Nov 2012 20:24:52 GMT

I believe the NAT rules are not setup correctly. You NAT rules should be as shown below

Since your destination interfaces are different in both the rules then you should not get "shadow " error during the commit. I think you are missing the destination interface in the NAT rules.

Thanks,

Sandeep T

Re: source nat with dual ISP configuration having issue.

LCMember4717 — Wed, 07 Nov 2012 06:57:50 GMT

thanks sandeep i believe this is the issue ill try it and test again.