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How to telnet router unknown ip address

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  • How to telnet router unknown ip address

    Hi,
    I am trying to reconfigure a network. This network has ISA server firewall connected to a sisco router 800 via the external NIC. I believe that there is misconfiguration in the network. The IP address of the external network card is 172.16.0.20 & default gateway is 172.16.0.1. I can ping from the isa server machine to 172.16.0.1, which is the default gateway but I can't do telnet. I am assuming that the 172.16.0.1 is the IP address of the router. Is there any way to find the ip addresses of the router?
    Thanks in advanced

  • #2
    Re: How to telnet router unknown ip address

    It is not necessarily that telnet port is enabled on the router. i would suggest you to try to open the command prompt and try to connect SSH ports on the router
    telnet 172.16.0.1 22
    if it responds, download the putty.exe and use it to connect to 22 port.

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    • #3
      Re: How to telnet router unknown ip address

      You'll need a serial cable and connect directly to the device. Cisco devices usually come with a rollover serial cable that is blue and has a DB9 female on one end and an RJ45 connector on the other end. You'll plug that into the port labeled Console on the Cisco.
      Regards,
      Jeremy

      Network Consultant/Engineer
      Baltimore - Washington area and beyond
      www.gma-cpa.com

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      • #4
        Re: How to telnet router unknown ip address

        sorry my issue is different. may be you can assist me..

        Router Configurations
        hi Colleagues, i have a burning issue though i am not an expert in cisco routers but have very basic skills. i have 3 routers in 3 different sites. let me name them RT1,RT2,RT3. then i have ASA 5510 and 2960 cisco catalyst switch at each site. i also have ISA firewall.. i want to connect to a data center that is connected to these sites through fiber. rt1 address is 192.168.12.1, ASA is 192.168.12.2, ISA ip is 192.168.12.3, RT2-ip is 192.168.112.1, RT3 ip is 192.168.132.1, the DATA center ip is 192.168.141.1. currently users at SITE 1 can access the DC well. users at Site 2 and site 3 connects via R1 to get to DC. all traffic is routed to pass through ASA not through ISA. how do i route the traffic to flow to the dc.
        NOTE: internet and applications are working locally to site B and Site C via SITE A router. pls assist to define a static route map...

        PLS help me

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        • #5
          Re: How to telnet router unknown ip address

          Moderator, this thread has been hijacked by a new user with a new problem. Can you move to a new thread?
          *RicklesP*
          MSCA (2003/XP), Security+, CCNA

          ** Remember: credit where credit is due, and reputation points as appropriate **

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