Announcement

Collapse
No announcement yet.

VPN/DMZ/DNS problem

Collapse
X
  • Filter
  • Time
  • Show
Clear All
new posts

  • VPN/DMZ/DNS problem

    Hi

    I hope somebody can help with my dns problem. I am new to this.

    I am using a Cisco 5510 firewall/vpn router. I have a internal network and a DMZ where i host a website. NAT in configured so DMZ network is reachable by VPN.

    I cannot ping servers in the DMZ from the internal network and the other way around.

    Here is my problem:

    When connected via VPN i cannot reach the websites in the DMZ. I get a DNS related error. I can reach a wiki website on the internal network though.

    Also I can reach the website in the DMZ when I use the WAN IP.

    I guess its a DNS problem. How do i solve it

  • #2
    Re: VPN/DMZ/DNS problem

    What is your Internal Domain name?
    What DNS servers are you using when connected by VPN?
    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


    • #3
      Re: VPN/DMZ/DNS problem

      Hi nbmprivat,
      I'm not a wiz in networking issues, but it can also be a routing problem.
      Anyhow, you better start drawing diagrams if you want assistance. With all the will to help, people can't help you without basic network map and devices configuration.

      Good luck!
      Regards,
      Leonid

      MCSE 2003, MCITP EA, VCP4.

      Comment


      • #4
        Re: VPN/DMZ/DNS problem

        Adding the nat statement nat (dmz) 0 access-list inside_nat0_outbound fixed the issue

        Comment


        • #5
          Re: VPN/DMZ/DNS problem

          Can you ping your DMZ from your firewall?

          Comment

          Working...
          X