Cisco ASA 5510 DMZ needs access to outside

zoojames
zoojames used Ask the Experts™
on
I am trying to allow access to the internet from my dmz.  The postings I have read on this site specify setting up a NAT. Since my firewall is live and I do not want to loose my job, would the following NAT break anything given the current NAT setup on my ASA 5510....

CURRENT....
global (outside) 1 interface
nat (inside) 0 access-list nonat
nat (inside) 1 10.20.30.0 255.255.255.0
nat (ids) 1 172.16.0.0 255.255.0.0

WOULD LIKE TO ADD...

nat (dmz) 1 192.168.50.0 255.255.255.0

Will this break anything? Is this necessary to allow internet access from dmz? I have a VPN router in the dmz that needs to talk to another vpn router in another location.
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Brian GarciaTechnology Support Specialist

Commented:
what do you want to accomplish? do you just need an internet access for the DMZ? Can you paste the whole configuration?

Adding NAT for DMZ could have an effect on the traffic flow for the DMZ network.
Top Expert 2011

Commented:
Adding this command will not do any harm, but is it really what you need?

Author

Commented:
well this is what I have setup, just not sure if it will work. I assume some level of outbound access from the dmz to the cloud is needed for the csico 2900 vpn router (sitting in the dmz) to create an  ipsec tunnel another 2900 elsewhere in the internet......

static (dmz,outside) 64.X.X.240 192.168.50.2 netmask 255.255.255.255

I have no problem keeping outbound from dmz locked, but i don't see how anything can communicate out.
Top Expert 2011
Commented:
Adding NAT for dmz will not do any harm to your current config. If 192.168.50.2 is your routers ip, then go ahead

Author

Commented:
I got the result I was looking for with the confirmation from fgasimzade, however I should consider keeping the outbound dmz traffic locked down to minimum.

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