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

    pfsense work and after few days , it doesn't work

    Scheduled Pinned Locked Moved General pfSense Questions
    7 Posts 2 Posters 691 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
      bisssane
      last edited by bisssane

      hi
      I installed my PfSense on a DELL server for a corporate network. I created a test vlan, and it works I can connect to internet with my test machine . all work well
      after a day, I can not connect anymore (I did not change anything in my network). I created another Vlan to do the same thing, it works but after a few days it does not work

      with my Pfsense, I can ping 8.8.8.8 (google server) so he can go out to the internet. and he also ping my test machine. but my test machine ( computer )does not connect to the internet (I can't ping the router that goes out to the internet)

      the problem is that it worked before, and after it does not work without changing anything

      1 Reply Last reply Reply Quote 0
      • GertjanG
        Gertjan
        last edited by

        Hi,

        A "time" issue, so look closer at the DHCP.
        Your devices obtain an IP (and gateway, and DNS ? - check these with ipconfig /all)
        DHCP leases are renewed as they should be ?
        This info is confirmed by the DHCP log on pfSense ?

        On pfSense, you kept DNS settings to default, or did you change something ?

        No "help me" PM's please. Use the forum, the community will thank you.
        Edit : and where are the logs ??

        1 Reply Last reply Reply Quote 1
        • B
          bisssane
          last edited by

          yes the addresses are assigned by the DHCP, and the test machine gets its address (a VLAN address defined in the DHCP pool) and it also gets the correct mask and the gateway (I check this with the command Ipconfig on my machine ) when I plug in the cable, it gets an address (so the connection is good between my Pfsense and the test machine)

          on Pfsense.how can I see the DHCP Log?

          for the DNS, it is not activated on Pfsense, I use the DNS server of the company

          B 1 Reply Last reply Reply Quote 0
          • GertjanG
            Gertjan
            last edited by Gertjan

            So, what is the DNS for a PC device on your VLAN - what was the DNS given by pfSense ?
            (where is ipconfog /all ?)

            Also : can this DNS (IP) be reached ?

            Did you test with nslookup on a device (PC) ?

            pfSense DHCP log is on the log tab Status => System Logs => DHCP

            @bisssane said in pfsense work and after few days , it doesn't work:

            I use the DNS server of the company

            So, tell us more.
            Are devices assigned the IP of this DNS server ?
            Or : all devices ask "pfSense" (they receive the IP of pfSense) and the forwarder on pfeEnse sends all requests to "the DNS server of the company" ?

            No "help me" PM's please. Use the forum, the community will thank you.
            Edit : and where are the logs ??

            B 1 Reply Last reply Reply Quote 1
            • B
              bisssane @bisssane
              last edited by

              @bisssane
              I think we say that the problem is the DNS when we can not ping or connect with the domain name. when you do not have a DNS server or it is misconfiguring, we can use the IP address instead of the domain name and it must work.
              with my machine I can not ping the next router (with its ip address) and I can not also ping my default gateway

              1 Reply Last reply Reply Quote 0
              • B
                bisssane @Gertjan
                last edited by

                @gertjan
                it takes its addrsse with pfsense DHCP (so there is connectivity) but it can not ping it

                1 Reply Last reply Reply Quote 0
                • GertjanG
                  Gertjan
                  last edited by

                  Still waiting for :

                  ipconfig /all
                  

                  Consider :

                  @bisssane said in pfsense work and after few days , it doesn't work:

                  for the DNS, it is not activated on Pfsense, I use the DNS server of the company

                  This can work, but is probably not setup correctly.

                  So, is this "DNS company server" on the same LAN as other devices ?
                  Do devices on LAN(s) obtain the correct IP address from pfSense as "the DNS server" ? (the ipconfig /all test)
                  If the DNS server is on a separate LAN, firewall rules permit traffic to reach the DNS server ?
                  Etc etc etc.

                  Detail your setup, and you'll have an answer right away.

                  ( Btw : know that pfSense can handle DNS just fine and all that with zero config needed ^^)

                  No "help me" PM's please. Use the forum, the community will thank you.
                  Edit : and where are the logs ??

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