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

    interface cannot ping lan to opt5

    Scheduled Pinned Locked Moved Firewalling
    40 Posts 6 Posters 1.9k Views 5 Watching
    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.
    • S Offline
      sy5tem
      last edited by

      Hi,

      im new to pfsense i've been banging my head for couple hours into this i just cannot figure it out please help!

      i am trying to have 2 interface , and i want both to be able to talk to each other.

      LAN
      172.31.31./24

      HOMELAN
      10.10.10.1/24

      from both lan i can reach internet / pfsense web page, but cannot reach each other

      PC on LAN 172.31.31.10
      PC on HOMELAN 10.10.10.2

      no ping goes trough....

      fw_lan.png fw_ilan.png fw_ia.png fw_homalan.png fw_hl.png

      here is i think the relaated settings you could use to help me ?

      thank you

      J 1 Reply Last reply Reply Quote 0
      • J Offline
        Jarhead @sy5tem
        last edited by

        @sy5tem
        Windows firewall??
        Usually the case. All else looks good.

        S 1 Reply Last reply Reply Quote 0
        • S Offline
          sy5tem @Jarhead
          last edited by

          @jarhead said in interface cannot ping lan to opt5:

          @sy5tem
          Windows firewall??
          Usually the case. All else looks good.

          Both of on "private" weird thing is that when I report pfsense ping goes trought at some point the. Stop working...

          Will disable firewall in windows ty

          J 1 Reply Last reply Reply Quote 0
          • J Offline
            Jarhead @sy5tem
            last edited by

            @sy5tem Not exactly sure what that says but it doesn't matter if they're set to private since you're using two different subnets, it would still block them.

            S 1 Reply Last reply Reply Quote 0
            • S Offline
              sy5tem @Jarhead
              last edited by

              @jarhead omg you where right ... lol

              disabling firewall now it work.... was so focused on pfsense ...

              thank you!

              1 Reply Last reply Reply Quote 0
              • O Offline
                ofcoit
                last edited by

                I have a very similar problem. Configuration: pfsense is VM in Windows Server 2012R2. Just turned off Windows firewall as suggested above but it did not have any effect.
                Pfsense configuration: 1 WAN and 2 LAN ports. Each LAN port can access the WAN, and the internal machines - the server at 25.250 and pfsense gui at 25.1. But I can't ping from a laptop at 25.11 to another laptop at 26.17 or vice-versa.

                Here are the firewall rules
                Screenshot LAN25 2022-10-14 095421 - Copy.png
                Screenshot LAN26 2022-10-14 095526 - Copy.png

                Looking for suggestions as I've tried everything I've found in these posts.

                J S 2 Replies Last reply Reply Quote 0
                • J Offline
                  Jarhead @ofcoit
                  last edited by Jarhead

                  @ofcoit Delete the top rule on LAN26.

                  O 1 Reply Last reply Reply Quote 1
                  • O Offline
                    ofcoit @Jarhead
                    last edited by

                    @jarhead
                    Change made. What worked still works. What doesn't work still doesn't work.

                    O 1 Reply Last reply Reply Quote 1
                    • O Offline
                      ofcoit @ofcoit
                      last edited by

                      @ofcoit all addresses show up in the ARP table, but still can't ping between 25.11 and 26.17

                      O 1 Reply Last reply Reply Quote 1
                      • O Offline
                        ofcoit @ofcoit
                        last edited by

                        @ofcoit
                        Disabled the firewall and had same results. It's like pfsense isn't routing at all between the two

                        O johnpozJ 2 Replies Last reply Reply Quote 1
                        • O Offline
                          ofcoit @ofcoit
                          last edited by

                          @ofcoit
                          Ping from pfsense to 25.11 fails as does pfsense to 26.17. However ping from 25.11 to 25.1 or 25.250 succeeds as does ping from 26.17 to 25.1 and to 25.250

                          J 1 Reply Last reply Reply Quote 1
                          • J Offline
                            Jarhead @ofcoit
                            last edited by

                            @ofcoit Show a picture of how everything is connected.
                            Are you using a virtual switch for both vlans or one for each?

                            Sounds like a software firewall maybe. Try disabling windows firewall.

                            1 Reply Last reply Reply Quote 0
                            • S Offline
                              SteveITS Rebel Alliance @ofcoit
                              last edited by

                              @ofcoit said in interface cannot ping lan to opt5:

                              turned off Windows firewall as suggested above

                              Just to be clear, you did that on the Hyper-V host or on the workstations? The workstations may disallow traffic from outside their subnet.

                              On LAN26 your "default" IPv6 rule only allows TCP not ICMP or UDP.

                              What does a traceroute between the two PCs show?

                              Only install packages for your version, or risk breaking it. Select your branch in System/Update/Update Settings.
                              When upgrading, allow 10-15 minutes to reboot, or more depending on packages, and device or disk speed.
                              Upvote 👍 helpful posts!

                              1 Reply Last reply Reply Quote 0
                              • johnpozJ Online
                                johnpoz LAYER 8 Global Moderator @ofcoit
                                last edited by

                                @ofcoit said in interface cannot ping lan to opt5:

                                It's like pfsense isn't routing at all between the two

                                Pfsense auto has routes for any network its directly attached to.

                                If you can not ping a device on either of those networks from the other network - and your rules allow, which yours show they do. Do you have any rules in floating?

                                It screams firewall or wrong mask, or wrong gateway on the device your pinging. Or pfsense doesn't know the mac of the device your trying to ping in the other network.

                                If you want to validate to yourself that pfsense is sending the traffic. Sniff (packet capture under diagnostic) on say vlan26 interface while you ping from vlan25 device. If the vlan25 device sent the ping pfsense, then you would see pfsense sending on the packets on the vlan26 interface.

                                You would also see state created. So example get a constant ping going to an IP on vlan26 from 25..

                                So I Ping 192.168.3.32 from 192.168.9.100

                                Here is the states..

                                states.jpg

                                Here is sniff on my dmz interface for icmp and 192.168.3.32 as the host, you can see request going out, and in my case you see an answer.

                                If you see the request go out and no answer - then the something is downstream of pfsense, most likely the host firewall, or it has a wrong mask, and doesn't think it needs to send the answer back to pfsense.

                                sniff.jpg

                                An intelligent man is sometimes forced to be drunk to spend time with his fools
                                If you get confused: Listen to the Music Play
                                Please don't Chat/PM me for help, unless mod related
                                SG-4860 25.07.1 | Lab VMs 2.8, 25.07.1

                                O 1 Reply Last reply Reply Quote 0
                                • O Offline
                                  ofcoit @johnpoz
                                  last edited by

                                  @johnpoz

                                  1. I tried disabling firewalls on both laptops. No change.
                                  2. ipV6 and TCP changed to ipV6 *, No change
                                  3. Something changed over the weekend - not sure what because now the LAN26 (note these are not VLANs, just LAN ports where each port is assigned a different subnet .25 and .26. ) cannot ping 25.1 nor 25.250/
                                  4. Looking at the ipconfig info, I see that 25 has a Default Gateway fe80::215.... and 26 does not have a default gateway. I don't have detailed records from last week to see if that's what changed or not. Seems to be a problem.
                                    4a. Swapped LAN cables on laptops in case laptop configuration was an issue. Only thing that changed is I got two new local addresses 25.25 and 26.18.
                                  5. The difference in the interface configurations between LAN25 and LAN26 is in IPV6 Configuration Type. LAN25 is set to "Track Interface" while LAN26 is "None". If I try to make LAN25 "None" I get an error saying that the DHCP6 Server is active on this interface.... The Router Advertisements Server is active on this interface and it can be used only with a static IPV6 configuration.
                                  6. I tried to use the Diagnostics as proposed above but saw nothing on LAN26. Verified I was using it properly by capturing traffic from 25.25 to 25.250 using constant ping.
                                  johnpozJ 1 Reply Last reply Reply Quote 1
                                  • johnpozJ Online
                                    johnpoz LAYER 8 Global Moderator @ofcoit
                                    last edited by johnpoz

                                    @ofcoit said in interface cannot ping lan to opt5:

                                    25.25 to 25.250

                                    Those would be in the same network and wouldn't go through pfsense. Is that a typo and one of those was suppose to be 26.x ?

                                    You have some errors - see the little 2 with the bell up right corner, did your rules not load?

                                    I see that 25 has a Default Gateway fe80::215.... and 26 does not have a default gateway.

                                    if you don't have a IPv4 gateway, how would you get anywhere? Other then local network - maybe you have a dhcp issue, or just connectivity issue.

                                    You say these are not vlans, and just physical - your not trying to run these connections over the same dumb switch are you?

                                    An intelligent man is sometimes forced to be drunk to spend time with his fools
                                    If you get confused: Listen to the Music Play
                                    Please don't Chat/PM me for help, unless mod related
                                    SG-4860 25.07.1 | Lab VMs 2.8, 25.07.1

                                    O 1 Reply Last reply Reply Quote 0
                                    • O Offline
                                      ofcoit @johnpoz
                                      last edited by

                                      @johnpoz
                                      I appreciate you replying. To be clear let me go over what happens.

                                      1. 25.25 laptop can successfully ping 25.1 and 25.250 (the server). I run the gui from a web browser on 25.25
                                      2. 25.25 pings 26.18 and gets: PING: transmit failed. General failure.
                                      3. 26.18 laptop pings 26.1 successfully
                                        4 26.18 pings 25. and gets: PING: transmit failed. General failure.
                                      4. Ping diagnostic in GUI to 26.18 fails
                                      5. Ping diagnostic in GUI to 25.250 succeeds.

                                      How do I set up a ipv4 gateway for LAN26? Do I have to add a gateway in System/Routing/Gateways. I didn't have this set up last week and 26 could get to 25.1 and 25.250 but not today. Where does that gateway get set up?

                                      johnpozJ 1 Reply Last reply Reply Quote 2
                                      • johnpozJ Online
                                        johnpoz LAYER 8 Global Moderator @ofcoit
                                        last edited by johnpoz

                                        @ofcoit said in interface cannot ping lan to opt5:

                                        25.25 pings 26.18 and gets: PING: transmit failed. General failure.

                                        that would be correct if you have no gateway..

                                        So if I try and ping something on a different network with an interface that has no gateway. My 192.168.10.9 interface is a SAN connection only between my PC and NAS, so there are no gateways on these interfaces.

                                        If I try and ping something off that network.

                                        $ ping -S 192.168.10.9 8.8.8.8
                                        
                                        Pinging 8.8.8.8 from 192.168.10.9 with 32 bytes of data:
                                        PING: transmit failed. General failure.
                                        PING: transmit failed. General failure.
                                        PING: transmit failed. General failure.
                                        

                                        Your interfaces on pfsense lan25 and lan26 should not have gateways set.. If you set a gateway on pfsense interface, then it considers it a "wan" interface - ie a connection that can be used to get to other networks.

                                        But your clients need gateways.. that would point to pfsense IP on that network.

                                        So for example.. Here is my pc.. on my lan..

                                        $ ipconfig /all                                                                              
                                                                                                                                     
                                        Windows IP Configuration                                                                     
                                                                                                                                     
                                           Host Name . . . . . . . . . . . . : i9-win                                                
                                           Primary Dns Suffix  . . . . . . . : local.lan                                             
                                           Node Type . . . . . . . . . . . . : Broadcast                                             
                                           IP Routing Enabled. . . . . . . . : No                                                    
                                           WINS Proxy Enabled. . . . . . . . : No                                                    
                                           DNS Suffix Search List. . . . . . : local.lan                                             
                                                                                                                                     
                                        Ethernet adapter Local:                                                                      
                                                                                                                                     
                                           Connection-specific DNS Suffix  . :                                                       
                                           Description . . . . . . . . . . . : Killer E2600 Gigabit Ethernet Controller              
                                           Physical Address. . . . . . . . . : B0-4F-13-0B-FD-16                                     
                                           DHCP Enabled. . . . . . . . . . . : No                                                    
                                           Autoconfiguration Enabled . . . . : Yes                                                   
                                           IPv4 Address. . . . . . . . . . . : 192.168.9.100(Preferred)                              
                                           Subnet Mask . . . . . . . . . . . : 255.255.255.0                                         
                                           Default Gateway . . . . . . . . . : 192.168.9.253                                         
                                           DNS Servers . . . . . . . . . . . : 192.168.3.10                                          
                                           NetBIOS over Tcpip. . . . . . . . : Enabled                                               
                                                                                                                                     
                                        Ethernet adapter Nas-San:                                                                    
                                                                                                                                     
                                           Connection-specific DNS Suffix  . :                                                       
                                           Description . . . . . . . . . . . : Realtek USB 2.5GbE Family Controller                  
                                           Physical Address. . . . . . . . . : A0-CE-C8-CC-57-DE                                     
                                           DHCP Enabled. . . . . . . . . . . : No                                                    
                                           Autoconfiguration Enabled . . . . : Yes                                                   
                                           IPv4 Address. . . . . . . . . . . : 192.168.10.9(Preferred)                               
                                           Subnet Mask . . . . . . . . . . . : 255.255.255.0                                         
                                           Default Gateway . . . . . . . . . :                                                       
                                           NetBIOS over Tcpip. . . . . . . . : Disabled                                              
                                        

                                        So devices on your 25 network would point to pfsense 25.1 address, and devices on your 26 would point to pfsense 26.1 address as their gateway.

                                        If your manually setting the IPs on your devices, you have to set a gateway if you want them to get to anything off their local network. If they are getting their IPs from dhcp, then that should auto hand out the gateway to the dhcp clients.

                                        An intelligent man is sometimes forced to be drunk to spend time with his fools
                                        If you get confused: Listen to the Music Play
                                        Please don't Chat/PM me for help, unless mod related
                                        SG-4860 25.07.1 | Lab VMs 2.8, 25.07.1

                                        O 1 Reply Last reply Reply Quote 0
                                        • O Offline
                                          ofcoit @johnpoz
                                          last edited by

                                          @johnpoz
                                          So where does LAN26 get it's gateway set.? The LAN adapter settings are the same between the laptops and the behavior follows the LAN connection. First lan26 with no gateway Screenshot LAN26 ipconfig.png

                                          Second lan25 with gateway.
                                          Screenshot LAN25 ipconfig 2022-10-17 130548.png

                                          Is the LAN26 adapter not sending out the information? It's a dual-LAN card, so the driver, etc should be the same.

                                          S johnpozJ 2 Replies Last reply Reply Quote 2
                                          • S Offline
                                            SteveITS Rebel Alliance @ofcoit
                                            last edited by SteveITS

                                            @ofcoit said in interface cannot ping lan to opt5:

                                            So where does LAN26 get it's gateway set

                                            I think you're asking how to set that on a PC on LAN26 but that's a confusing way to ask that...it sounds like you're trying to set a gateway on pfSense's LAN26 interface. There is no gateway set on the pfSense interface. If 192.168.26.1 is your pfSense (?) then since that's the DHCP server it should be providing itself as the gateway. On the DHCP Server tab for LAN26 the "Gateway" should be blank. Alternately you could give the PC a static IP/gateway.

                                            With no gateway set, the PC has no idea where to send packets for 192.168.26.1. Or for the DNS server 192.168.10.229 for that matter.

                                            Only install packages for your version, or risk breaking it. Select your branch in System/Update/Update Settings.
                                            When upgrading, allow 10-15 minutes to reboot, or more depending on packages, and device or disk speed.
                                            Upvote 👍 helpful posts!

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