Solved

Cisco ASA routing

Posted on 2012-12-26
1
245 Views
Last Modified: 2013-03-22
I have a cisco ASA 5510 firewall.
have 3 physical interfaces on it right now

corp-192.168.15.1/24   (192.168.15.2 is corp router)
inside-192.168.5.1/24
dmz-192.168.102.1/24

we have another network between a router on the corporate network that has a network on the same address as one of our physical networks (192.168.5.x/24).  It has an SMTP server that we want a server on our DMZ network to be able to use.

when we send a request from 192.168.102.99 (DMZ network) to 192.168.5.6 (SMTP) server, it is routed to the physical interface on inside network.  

How can we override this and any requests made from 192.168.102.99 to 192.168.5.6 using port 25, get routed out the corp network instead of trying to go to the inside network by default.

was thinking a route statement and/or a static statement is what i need

route outside 192.168.5.6 255.255.255.255 192.168.15.2 1

or do need static like below

static (DMZ,outside) 192.168.5.6 192.168.5.6 netmask 255.255.255.255

or need both?

thanks
0
Comment
Question by:rkneal
1 Comment
 
LVL 20

Accepted Solution

by:
rauenpc earned 500 total points
ID: 38722555
You need to pick a fake subnet, and use it for nat purposes. Make a static route on the Asa for the fake network with a next hop of the router. Configure the router with a static nat to translate a fake ip to the real ip.

Post configs if you need help accomplishing this.
0

Featured Post

PRTG Network Monitor: Intuitive Network Monitoring

Network Monitoring is essential to ensure that computer systems and network devices are running. Use PRTG to monitor LANs, servers, websites, applications and devices, bandwidth, virtual environments, remote systems, IoT, and many more. PRTG is easy to set up & use.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Title # Comments Views Activity
Cisco Routers 17 81
What ports to open for KMS on an L7 Application based firewall? 1 69
Sonicwall Web User login Redirect 9 48
slow vpn connection 9 39
In this tutorial I will show you with short command examples how to obtain a packet footprint of all traffic flowing thru your Juniper device running ScreenOS. I do not know the exact firmware requirement, but I think the fprofile command is availab…
We sought a budget ($5,000) firewall solution that would provide all the performance we needed with no single point of failure.  Hosting a SAAS web application in our datacenter, it was critical that we find a way to keep connectivity up and inbound…
This video demonstrates how to create an example email signature rule for a department in a company using CodeTwo Exchange Rules. The signature will be inserted beneath users' latest emails in conversations and will be displayed in users' Sent Items…
With Secure Portal Encryption, the recipient is sent a link to their email address directing them to the email laundry delivery page. From there, the recipient will be required to enter a user name and password to enter the page. Once the recipient …

914 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

13 Experts available now in Live!

Get 1:1 Help Now