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How to forward all traffic on CISCO 837

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  • How to forward all traffic on CISCO 837

    Hi,

    I use cisco 837 as broadband router .

    How to set up this router to forward all incomming traffic to firewall ?

    internet -> router 837 ==> firewall

    thanks

  • #2
    Re: How to forward all traffic on CISCO 837

    You should nat the traffic.
    In this scene you need to create a dubble nat. I'm not sure if you really want this...
    Marcel
    Technical Consultant
    Netherlands
    http://www.phetios.com
    http://blog.nessus.nl

    MCITP(EA, SA), MCSA/E 2003:Security, CCNA, SNAF, DCUCI, CCSA/E/E+ (R60), VCP4/5, NCDA, NCIE - SAN, NCIE - BR, EMCPE
    "No matter how secure, there is always the human factor."

    "Enjoy life today, tomorrow may never come."
    "If you're going through hell, keep going. ~Winston Churchill"

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    • #3
      Re: How to forward all traffic on CISCO 837

      Hi

      I just found simple solution

      ip route 0.0.0.0 0.0.0.0.0 ADSL

      forward all ips from ADSL connection and it is working I used this as router is only like a bridge between newtork & internet and firewall is doing security job



      but more interested things

      how to disable telnet and enable ssh connection with router ?
      Last edited by ryszon; 21st August 2007, 16:16.

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      • #4
        Re: How to forward all traffic on CISCO 837

        ow that was what you wanted...
        Marcel
        Technical Consultant
        Netherlands
        http://www.phetios.com
        http://blog.nessus.nl

        MCITP(EA, SA), MCSA/E 2003:Security, CCNA, SNAF, DCUCI, CCSA/E/E+ (R60), VCP4/5, NCDA, NCIE - SAN, NCIE - BR, EMCPE
        "No matter how secure, there is always the human factor."

        "Enjoy life today, tomorrow may never come."
        "If you're going through hell, keep going. ~Winston Churchill"

        Comment


        • #5
          Re: How to forward all traffic on CISCO 837

          Originally posted by ryszon View Post
          Hi

          I just found simple solution

          ip route 0.0.0.0 0.0.0.0.0 ADSL

          forward all ips from ADSL connection and it is working I used this as router is only like a bridge between newtork & internet and firewall is doing security job



          but more interested things

          how to disable telnet and enable ssh connection with router ?
          well, thats pretty much a static default route, that will work for all traffic that's going out of your network.

          ip nat inside source static x.x.x.x interface Dialer0

          will enable your firewall to "hear" all like if your dsl is connected right on its wan port. That way you can enable port fowarding on your firewall only, instead of doing it on both the router and the firewall, b/c of the double nat.

          hope it helps.

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