Netgate Discussion Forum
    • Categories
    • Recent
    • Tags
    • Popular
    • Users
    • Search
    • Register
    • Login

    Udp and dns

    Scheduled Pinned Locked Moved DHCP and DNS
    4 Posts 3 Posters 2.5k Views
    Loading More Posts
    • Oldest to Newest
    • Newest to Oldest
    • Most Votes
    Reply
    • Reply as topic
    Log in to reply
    This topic has been deleted. Only users with topic management privileges can see it.
    • P
      particleman
      last edited by

      I am using 1.2.3-RELEASE  and there are times that there are several hundred to a thousand udp states open from my ip address to both of the dns servers that I designated in system ,general setup  have searched for some time and have not been able to understand why this is happening. Also there are also only 1 to 2 users when this is happening the states are closed rather quickly but i still don't understand why there are so many open.

      1 Reply Last reply Reply Quote 0
      • jimpJ
        jimp Rebel Alliance Developer Netgate
        last edited by

        Depending on what your workstation is doing, it could be normal. If you are running a bittorrent client and it does a DNS request for every connected peer, it would be easy to generate dozens or hundreds of DNS requests.

        Remember: Upvote with the 👍 button for any user/post you find to be helpful, informative, or deserving of recognition!

        Need help fast? Netgate Global Support!

        Do not Chat/PM for help!

        1 Reply Last reply Reply Quote 0
        • P
          particleman
          last edited by

          One thing I'm wondering is why it shows a udp state to BOTH name servers. The purpose of listing two dns is just in case one fails , correct?

          173.xx.xxx.xxx:10314 -> 208.67.222.222:53  MULTIPLE:SINGLE
          173.xx.xxx.xxx:10314 -> 208.67.220.220:53        MULTIPLE:SINGLE

          1 Reply Last reply Reply Quote 0
          • W
            wallabybob
            last edited by

            @particleman:

            The purpose of listing two dns is just in case one fails , correct?

            I think I have read that a DNS client asks all the servers concurrently (presumably to get the fastest response, particularly if a server is not contactable).

            1 Reply Last reply Reply Quote 0
            • First post
              Last post
            Copyright 2025 Rubicon Communications LLC (Netgate). All rights reserved.