MRTG (SNMP) through a PIX

Discussion in 'Cisco' started by Brian P., Aug 9, 2005.

  1. Brian P.

    Brian P. Guest

    Hi

    I have big problems trying to get SNMP info through a PIX firewall.

    At our LAN segment, I have setup a Linux/MRTG PC, which I want to read info
    from our Internet router,
    placed at the external interface of our PIX:
    When I try to connect to the router from the MRTG PC, I got nothing.
    I have no problems getting info from switches etc., as long as they are
    placed at
    the same network as the MRTG PC.

    What am I doing wrong ?
    Brian P., Aug 9, 2005
    #1
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  2. Brian P.

    Megane Guest

    snmp-server host inside 192.168.15.208 poll



    "Brian P." <> wrote in message
    news:Xns96AD893B53854nospamthankscom@208.49.80.188...
    > Hi
    >
    > I have big problems trying to get SNMP info through a PIX firewall.
    >
    > At our LAN segment, I have setup a Linux/MRTG PC, which I want to read
    > info
    > from our Internet router,
    > placed at the external interface of our PIX:
    > When I try to connect to the router from the MRTG PC, I got nothing.
    > I have no problems getting info from switches etc., as long as they are
    > placed at
    > the same network as the MRTG PC.
    >
    > What am I doing wrong ?
    >
    Megane, Aug 9, 2005
    #2
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  3. Brian P.

    Megane Guest

    access-list outbound permit tcp host 192.168.15.208 any
    snmp-server host inside 192.168.15.208 poll

    sorry forgot one-line

    where 192.168.15.208 is your inside MRTG PC



    "Brian P." <> wrote in message
    news:Xns96AD893B53854nospamthankscom@208.49.80.188...
    > Hi
    >
    > I have big problems trying to get SNMP info through a PIX firewall.
    >
    > At our LAN segment, I have setup a Linux/MRTG PC, which I want to read
    > info
    > from our Internet router,
    > placed at the external interface of our PIX:
    > When I try to connect to the router from the MRTG PC, I got nothing.
    > I have no problems getting info from switches etc., as long as they are
    > placed at
    > the same network as the MRTG PC.
    >
    > What am I doing wrong ?
    >
    Megane, Aug 9, 2005
    #3
  4. Brian P.

    Wil Guest

    I would suspect that you have permitted the inside IP address to poll,
    but the PIX is translating it to a public IP address. If possible, map
    your graphing server to an open IP address and allow this in your list.

    Wil
    my 3ยข


    Brian P. wrote:
    > Hi
    >
    > I have big problems trying to get SNMP info through a PIX firewall.
    >
    > At our LAN segment, I have setup a Linux/MRTG PC, which I want to read info
    > from our Internet router,
    > placed at the external interface of our PIX:
    > When I try to connect to the router from the MRTG PC, I got nothing.
    > I have no problems getting info from switches etc., as long as they are
    > placed at
    > the same network as the MRTG PC.
    >
    > What am I doing wrong ?
    >
    Wil, Aug 9, 2005
    #4
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