cisco 1841 config file required for sdsl and adsl UK connection

Posted on 2006-03-30
Last Modified: 2009-07-29
Hi All

I have customer which has purchased an 1841 modular router with a SDSL wic & a ADSL wic and a 1812 router to establish a VPN connection to the 1841 from a branch office. The ADSL wic will be used by internal clients at HQ in a sbs (1 nic) network for internet and email. The SBS box requires ports 25,80,3389 (and a few more) to be redirected to its single nic. The SDSL wic will used for hosting VPN traffic only. The VPN connections will come mainly from the 1812 router based at a remote site. Also VPN connections will come from MS Win XP PPTP clients and draytek routers using 3DES.





A config file for the 1841as follows:~



*      SDSL Internet dialup setup
*      SDSL wic public ip address to be set to
*      Incoming VPN connections from several locations
*      When clients are connected then they become part of the SBS
*      Allow telnet



*      ADSL Internet dialup setup
*      Give internal users internet access
*      ADSL wic public ip address to be set to
*      Incoming ports (such as SMTP) to be redirected to single nic sbs
*      Allow sbs box to received traffic on ip
*      Allow sbs box to appear to send mail for
*      Allow a  internal web server to received traffic on
*      Allow telnet

A Config file for the 1812 as follows: ~

*         Setup a public ip address of

*         Give internal users internet access

*         Setup VPN connection to 1841 router and access email and sbs server resources.

Thanks in Advance

Question by:Favourtech
    1 Comment
    LVL 11

    Accepted Solution


    Featured Post

    Highfive + Dolby Voice = No More Audio Complaints!

    Poor audio quality is one of the top reasons people don’t use video conferencing. Get the crispest, clearest audio powered by Dolby Voice in every meeting. Highfive and Dolby Voice deliver the best video conferencing and audio experience for every meeting and every room.

    Join & Write a Comment

    This solves the problem of diagnosing why an internet connection is no longer working. It also helps identify the likely cause of the lost connection if the procedure fails to re-establish your internet connection. It helps to pinpoint the likely co…
    Sometimes you have to pull out old tricks to get a new firewall to work… While we were installing a new Sonicwall at a customers site we found that sites they were able to visit before were not working.  It seemed random and we could not understa…
    Need more eyes on your posted question? Go ahead and follow the quick steps in this video to learn how to Request Attention to your question. *Log into your Experts Exchange account *Find the question you want to Request Attention for *Go to the e…
    In this sixth video of the Xpdf series, we discuss and demonstrate the PDFtoPNG utility, which converts a multi-page PDF file to separate color, grayscale, or monochrome PNG files, creating one PNG file for each page in the PDF. It does this via a c…

    732 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

    24 Experts available now in Live!

    Get 1:1 Help Now