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Intercept and redirect traffic

HQuest
Level 1
Level 1

On a FMC/FTD environment, any ideas how to intercept and redirect NTP and/or DNS traffic from specific clients? There are a few appliances with hardcoded NTP/DNS entries, which I would totally prefer to use my internal systems to provide them access to these resources, instead of blocking them, or letting them go thru on their own. The catch is, I don't always know the destination IP address - particularly true for the pool of NTP servers.

 

I know I can do a static NAT when I do know the destination address(es): have this working on a similar scenario, but with the randomness of the NTP pool of servers, this is pretty tricky...

 

[Edit] Well, never mind: it seems I can add my very own "IPv4-Any" object instead of trying to use the system provided "any-ipv4", and that does the trick.

 

Thanks!

1 Reply 1

wherewolf
Level 1
Level 1

I know this thread is rather old, but I'm looking for a solution to external hardcoded ntp or dns on certain devices and would like to use the firewall to intercept these requests from certain vrf's and redirect to internal ntp servers.  It appears that you determined a solution, but didn't post the details.  Can you elaborate?  Many Thanks!

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