Allow two IP's see each other?


I have a Cisco ASA 5510 configured; I have added a web server inside the network and is accessible from outside.
I want to allow all internal users to see the website using the domain instead of the internal ip address.

Can this be done via the ASA? Both the users and webserver are using the same public IP address.

Thanks, Joe
Who is Participating?
qbakiesConnect With a Mentor Commented:
This can be done with config called hairpinning but it's not recommended.  What's the reason you don't want them accessing the webserver though internal DNS?
surbabu140977Connect With a Mentor Commented:
u just need to use dns and allow dns port to communicate in the asa. ASA does not have much part in it. You also need to allow www traffic from users to the webserver.

How come users and webserver have the same public ip???
Managing Security Policy in a Changing Environment

The enterprise network environment is evolving rapidly as companies extend their physical data centers to embrace cloud computing and software-defined networking. This new reality means that the challenge of managing the security policy is much more dynamic and complex.

Heres what you can try. Make sure your dns points to your public IP and try this

static (inside,inside) Public_IP Private_IP netmask
joe90kaneAuthor Commented:
Thanks for the comments the hairpinning setup is working great - Is there any security concerns related to the setup?
I can't think of any explicit security issues but you should be aware of the additional www traffic that will be passing through your ASA, whereas if you used internal DNS to resolve it would never hit the ASA.
Markus BraunCEOCommented:
technically there is no point to go through the ASA to view an internal web site
just configure your DNS server to resolve the IP internally
that would be the correct way to do it
All Courses

From novice to tech pro — start learning today.