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

    Attack via port 33434 ???

    Scheduled Pinned Locked Moved Off-Topic & Non-Support Discussion
    4 Posts 3 Posters 2.4k 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.
    • B
      beefcake
      last edited by

      Hey guys.  I am a somewhat new pfsense user here and absolutely love my SG-2440 right now.  I've been getting into the habit of looking through my logs for strange activity and lately I have been noticing a daily and coordinated plume of packets hitting my wan side via port 33434.  The source IP's are actually from various countries.  Has anyone seen something like this before or know what it is about? (Screenshot attached)

      I know that this port is typically associated with trace-route however I think the number is supposed to get incremented for every hop right? …All I have is pages and pages of this stuff at 33434... (This burst tends to happen every 24 hours).  Any insight from the firewall wizards here would be much appreciated.
      Screenshot-1.png
      Screenshot-1.png_thumb

      1 Reply Last reply Reply Quote 0
      • D
        doktornotor Banned
        last edited by

        Oh noes, the infamous traceroute "attack"…  ;D

        1 Reply Last reply Reply Quote 0
        • H
          hda
          last edited by

          @beefcake:

          …Any insight...

          Due to undamned pf. Recommended Status: System logs: Settings(Log Firewall Default Blocks) unchecked.  8)

          1 Reply Last reply Reply Quote 0
          • B
            beefcake
            last edited by

            Ok, will do.  Is there any reason why they are using multiple sources for trace route? (Wouldn't it suffice for just one machine to send the packet rather than 50 or 100?)

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