[Okta Webinar] Learn how to a build a cloud-first strategyRegister Now


Cisco 1841 Router Config

Posted on 2006-05-25
Medium Priority
Last Modified: 2013-11-29
I am setting up a poin to point T1 between 2 sites. One side will connect to my main office and the other to a remote site. I will be using a Cisco 1841 router and i am not sure of the commands for this router. I have done this connection a few times with 2612's. Currently at this site I am using a pix 501 and doing a site ot site vpn to a pix 520 over cable modem. I have 3 printers with outside static address's that are natted to 3 inside addresses on the pix 501. When I change this connection I need to change the printers IP address's since i will not have the cable modem anymore. Do I need to do port fowarding on the 520 to accomplish this without using a bunch of my outside ip addresses? Thanks
Question by:shapiro360
  • 2

Expert Comment

ID: 16761316
This is the configuration for my 1841 "T1" connection. It is configured as any other device.

Router#conf t
Router(config)#int Serial0/0/0
Router(config-if)#ip address

Is your T1 going to be firewalled?

I would think that since both sites are going to be connected via a T1, there will be no need to use port forwarding on a firewall. the router would simply route the traffic to the proper destination.

Our set up is like this.

Campus A ----Router ----- Mail Filter/Proxy-------PIX--------DSL
                      |                      RRAS
Campus B-------

Campus B has outside access except through campus A .


Author Comment

ID: 16762497
There is no firewall between these 2 sites:

 main site  --  Router----Switch[ corporate Lan]---pix--router-- ISP
                       :                            Fiber        : T1 Point to Point
 remote    --  Router

Accepted Solution

Mad_Jasper earned 375 total points
ID: 16762836
It doesn't appear to me that you would need to do any port forwarding to accomplish you goal of continuing to use the printers, unless I am missing something. If you have an internal IP of the one printer as, then the router should router traffic to the printer from the main site.

Just ensure that the users who print to these printers have the correct IP addresses configured for their printer, i.e.,, 201, 202.

Featured Post

Prep for the ITIL® Foundation Certification Exam

December’s Course of the Month is now available! Enroll to learn ITIL® Foundation best practices for delivering IT services effectively and efficiently.

Question has a verified solution.

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

WARNING:   If you follow the instructions here, you will wipe out your VTP and VLAN configurations.  Make sure you have backed up your switch!!! I recently had some issues with a few low-end Cisco routers (RV325) and I opened a case with Cisco TA…
Tech spooks aren't just for those who are tech savvy, it also happens to those of us running a business. Check out the top tech spooks for business owners.
In this video we outline the Physical Segments view of NetCrunch network monitor. By following this brief how-to video, you will be able to learn how NetCrunch visualizes your network, how granular is the information collected, as well as where to f…
Monitoring a network: why having a policy is the best policy? Michael Kulchisky, MCSE, MCSA, MCP, VTSP, VSP, CCSP outlines the enormous benefits of having a policy-based approach when monitoring medium and large networks. Software utilized in this v…

834 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