PIX NAT Troubleshooting Assistance

Discussion in 'Cisco' started by Ken, Jan 18, 2006.

  1. Ken

    Ken Guest

    Basically, a client has a PIX 516, which I'm trying to replace with a
    PIX 506e, simply because the 516 keeps going down and they have a spare
    506e to use.

    The config for the 506e is attached below...

    The public ip information provided is :
    Subnet id:
    Default gateway:
    Range is to

    Currently, this is the public ip assignment:
    ..17 default gateway
    ..19 outside port of the PIX 516
    ..21 a spam firewall (just serves as the MX, then forwards to the .19,
    which currently translates to via PAT on the 516
    ..28 attempting to use for 1-to-1 NAT for 2003 server, internal address
    ..29 outside port of the PIX 506e
    ..30 3rd party server

    Right now I'm just trying to get any traffic to flow from
    to I'm not sure if there is some issue with having 2
    PIX's running like this. I was hoping I could get the new one running
    without taking down the old one, then switch over services at my

    Just enabling and testing with ping's, I get no replies. If I do
    "debug icmp trace", I do receive this message, which seems to indicate
    my pings are at least hitting the router, but it seems like they're not
    reaching the server:

    HOSTNAME # 55: ICMP echo-request from outside: to
    WEB-External ID=60036 seq=27648 length=40
    56: ICMP echo-request: untranslating outside:WEB-External to

    Any ideas?
    =========== 506e config =====================
    PIX Version 6.3(4)
    interface ethernet0 auto
    interface ethernet1 auto
    nameif ethernet0 outside security0
    nameif ethernet1 inside security100
    hostname HOSTNAME
    domain-name DOMAINNAME
    fixup protocol dns maximum-length 512
    fixup protocol ftp 21
    fixup protocol h323 h225 1720
    fixup protocol h323 ras 1718-1719
    fixup protocol http 80
    fixup protocol rsh 514
    fixup protocol rtsp 554
    fixup protocol sip 5060
    fixup protocol sip udp 5060
    fixup protocol skinny 2000
    fixup protocol smtp 25
    fixup protocol sqlnet 1521
    fixup protocol tftp 69
    name WEB-Internal
    name WEB-External
    access-list outside_access_in permit icmp any any
    pager lines 24
    logging on
    logging monitor debugging
    logging trap debugging
    mtu outside 1500
    mtu inside 1500
    ip address outside
    ip address inside
    ip audit info action alarm
    ip audit attack action alarm
    pdm location WEB-Internal inside
    pdm location WEB-External outside
    pdm logging debugging 100
    pdm history enable
    arp timeout 14400
    global (outside) 1 interface
    nat (inside) 1 0 0
    static (inside,outside) WEB-External WEB-Internal netmask 0 0
    access-group outside_access_in in interface outside
    route outside 1
    timeout xlate 0:05:00
    timeout conn 1:00:00 half-closed 0:10:00 udp 0:02:00 rpc 0:10:00 h225
    timeout h323 0:05:00 mgcp 0:05:00 sip 0:30:00 sip_media 0:02:00
    timeout uauth 0:05:00 absolute
    aaa-server TACACS+ protocol tacacs+
    aaa-server TACACS+ max-failed-attempts 3
    aaa-server TACACS+ deadtime 10
    aaa-server RADIUS protocol radius
    aaa-server RADIUS max-failed-attempts 3
    aaa-server RADIUS deadtime 10
    aaa-server LOCAL protocol local
    http server enable
    http inside
    no snmp-server location
    no snmp-server contact
    snmp-server community public
    no snmp-server enable traps
    floodguard enable
    telnet inside
    telnet timeout 5
    ssh timeout 5
    console timeout 0
    dhcpd address inside
    dhcpd lease 3600
    dhcpd ping_timeout 750
    dhcpd auto_config outside
    terminal width 80
    Ken, Jan 18, 2006
    1. Advertisements

  2. Ken

    Chris Guest

    Firstly, there is no such thing as a Pix 516. I presume that you mean a 515?

    If I understand you correctly, you have put this 506E in parallel with the
    existing 515. Are the IP addresses the same on both boxes? ie. is the inside
    interface on the 506 the same as the 515? Are they different? Does the
    server on have it's default gw via the 515 still or the 506?

    Chris, Jan 18, 2006
    1. Advertisements

Ask a Question

Want to reply to this thread or ask your own question?

You'll need to choose a username for the site, which only take a couple of moments (here). After that, you can post your question and our members will help you out.