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pfsense

DHCP and DNS
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  • Z
    zweany
    last edited by Jun 26, 2022, 12:04 PM

    Hello, I'm terribly stuck with setting up my pfsense, We're working on our final project and it is to setup a network in esxi7, Me along with others had to do specific tasks and i was handling the internal side of things, everything worked fine untill my other classmate setup his pfsense and mine lost connection to all machines ( AD, Fileserver, clients )

    The internal pfsense that i was using got an ip from the isp connection we were using ( 10.10.70.91 ) but since the other pfsense was setup i lost all my connections. Is there a way to resolve this? either by making it so we the new pfsense gives it's isp to mine ( since the connection only gives 1sp ) or something else?

    would really appreciate some help

    J 1 Reply Last reply Jun 26, 2022, 1:00 PM Reply Quote 0
    • J
      JKnott @zweany
      last edited by Jun 26, 2022, 1:00 PM

      @zweany

      It might help to provide more info, but I suspect the other guy is grabbing the DHCP IP address. With many ISPs you get a single IPv4 address and only one device can use it. I can't say much about the LAN side, without more info. If the other guy disconnects his system, is service restored?

      PfSense running on Qotom mini PC
      i5 CPU, 4 GB memory, 32 GB SSD & 4 Intel Gb Ethernet ports.
      UniFi AC-Lite access point

      I haven't lost my mind. It's around here...somewhere...

      Z 1 Reply Last reply Jun 26, 2022, 1:09 PM Reply Quote 1
      • Z
        zweany @JKnott
        last edited by Jun 26, 2022, 1:09 PM

        @jknott thank you for the quick response the lan side of the setup uses 10.20.50.3 for the lan of the first pfsense and after the other guy made his he put his lan as 10.20.50.4, i tried shutting of the new firewall and removing all connections to our esxi switch and see if the first pfsense can pull a wan now, it will still not give a new dhcp adress and it will remain at 0.0.0.0.

        one of the things i thought it could be is that all the range provided by the isp has been used up and that even with the other pfsense being completly disconected it can't pull a new isp since there's none left.

        What other info could i provide to help?

        J 1 Reply Last reply Jun 26, 2022, 4:06 PM Reply Quote 0
        • J
          JKnott @zweany
          last edited by JKnott Jun 26, 2022, 4:12 PM Jun 26, 2022, 4:06 PM

          @zweany

          DHCP has a lease time, which means a device "owns" the address for the lease time. That might be the issue.

          PfSense has a utility called Packet Capture, which can be used to see what's actually happening. Give that a try and learn a bit about DHCP in the process.

          When you use Packet Capture, you probably want to download the capture and examine it with Wireshark.

          PfSense running on Qotom mini PC
          i5 CPU, 4 GB memory, 32 GB SSD & 4 Intel Gb Ethernet ports.
          UniFi AC-Lite access point

          I haven't lost my mind. It's around here...somewhere...

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