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

    Can ping server but not rest of network.

    Scheduled Pinned Locked Moved OpenVPN
    30 Posts 5 Posters 15.1k 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.
    • T
      Thibaut
      last edited by

      That …

      thibaut@PC-de-Thibaut:~$ netstat -rn
      Table de routage IP du noyau
      Destination     Passerelle      Genmask         Indic   MSS Fenêtre irtt Iface
      192.168.2.1     192.168.2.5     255.255.255.255 UGH       0 0          0 tun0
      192.168.2.5     0.0.0.0         255.255.255.255 UH        0 0          0 tun0
      172.16.119.0    0.0.0.0         255.255.255.0   U         0 0          0 vmnet1
      192.168.1.0     192.168.2.5     255.255.255.0   UG        0 0          0 tun0
      172.16.74.0     0.0.0.0         255.255.255.0   U         0 0          0 vmnet8
      10.187.88.0     0.0.0.0         255.255.252.0   U         0 0          0 eth0
      169.254.0.0     0.0.0.0         255.255.0.0     U         0 0          0 eth0
      0.0.0.0         10.187.88.245   0.0.0.0         UG        0 0          0 eth0
      
      
      1 Reply Last reply Reply Quote 0
      • Cry HavokC
        Cry Havok
        last edited by

        Routing looks good.  Does the OpenVPN server end have another network that's 192.168.1.x/24?

        1 Reply Last reply Reply Quote 0
        • T
          Thibaut
          last edited by

          My pfSenseBox is in two network :
          WAN : 10.187.88.0/22 (address 10.187.88.9)
          LAN : 192.168.1.0/24 (address 10.187.88.254, it's the gateway of the 192.168.1.0/24 subnet)

          So i think that the OpenVPN server is on the 192.168.1.0/24 network …

          1 Reply Last reply Reply Quote 0
          • Cry HavokC
            Cry Havok
            last edited by

            I can't see an obvious problem.  I'd check things like firewall settings (on both ends), drop a packet sniffer in to see if the packets are making it through pfSense (ISTR that tcpdump is installed by default on pfSense) and check to see if you can ping from the 192.168.1.0/24 network to the 192.168.2.0/24 network.

            1 Reply Last reply Reply Quote 0
            • T
              Thibaut
              last edited by

              Arf ….

              Ok thanks for your help ! A return to work on Monday, so see you soon !

              1 Reply Last reply Reply Quote 0
              • T
                Thibaut
                last edited by

                Hello !

                So, i can ping 192.168.2.0/24 address from 192.168.1.0/24 subnet. But from 10.187.88.0/22, i ping 192.168.1.254 but not the rest of the 192.168.1.0/24 subnet :(

                1 Reply Last reply Reply Quote 0
                • Cry HavokC
                  Cry Havok
                  last edited by

                  I think a diagram is required to make that last post make sense.  You're implying that you're trying to ping from outside the pfSense host, on the WAN, to the LAN.

                  1 Reply Last reply Reply Quote 0
                  • T
                    Thibaut
                    last edited by

                    PC1 192.168.2.6 (tun0) –-------------- 10.187.88.8 (WAN) pfSense 192.168.1.254 (LAN) ------------------ 192.168.1.245 (LAN) PC2

                    pfSense have also 192.168.2.5 for the VPN Server.

                    ping from PC2 to PC1 work !
                    ping from PC1 to PC2 doesn't work !

                    and i want to access to LAN since WAN with VPN server

                    1 Reply Last reply Reply Quote 0
                    • Cry HavokC
                      Cry Havok
                      last edited by

                      Right, then look at the firewall settings on PC2.  You may find that it's blocking ping requests.

                      1 Reply Last reply Reply Quote 0
                      • T
                        Thibaut
                        last edited by

                        thanks for your help

                        But my firewall on PC2 is disable …

                        I can see the request from 192.168.2.6 to 192.168.1.245 with tcpdump of pfSense, but not the reply.

                        1 Reply Last reply Reply Quote 0
                        • Cry HavokC
                          Cry Havok
                          last edited by

                          Then your problem is with the host 192.168.1.245.  Check that it's default gateway is correct, check to see that it's receiving the packets, do all the basic troubleshooting steps on that host.

                          1 Reply Last reply Reply Quote 0
                          • T
                            Thibaut
                            last edited by

                            The problem doesn't become on that host because there is the same problem with an other PC with an other IP address…

                            thx for your help ...

                            1 Reply Last reply Reply Quote 0
                            • Cry HavokC
                              Cry Havok
                              last edited by

                              Well, start there.  If you're seeing packets enter the LAN but not return to pfSense then something you've posted here is obviously wrong.  The three possibilities are:

                              1. The hosts don't use the pfSense host as their default gateway
                              2. The static routes on the LAN clients are wrong
                              3. They run firewalls

                              Eliminate those one at a time, what's left is the only possibility.

                              1 Reply Last reply Reply Quote 0
                              • T
                                Thibaut
                                last edited by

                                1. The static routes on the LAN clients

                                What's that ?  ???

                                1 Reply Last reply Reply Quote 0
                                • Cry HavokC
                                  Cry Havok
                                  last edited by

                                  Static routes tell clients how to reach networks that are attached to something other than your default gateway.

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

                                    I had this same problem, but when I added all my hosts that I wanted the VPN clients to be able to contact to the DNS Forwarder list, I was able to ping and connect to the LAN side from the VPN Client side, when i removed those entries..I also lost my connectivity to those LAN elements. Not sure why but it seem that the host you want to be able to access via the VPN have to be listed in the DNS Forwarder also. Bug? not sure, but adding them fixed my issue.

                                    1 Reply Last reply Reply Quote 0
                                    • T
                                      Thibaut
                                      last edited by

                                      Hi and thanks for your help !

                                      I represent my configuration, because i'm not able to solve the probleme :

                                      VPN Server configuration file :

                                      writepid /var/run/openvpn_server0.pid
                                      #user nobody
                                      #group nobody
                                      daemon
                                      keepalive 10 60
                                      ping-timer-rem
                                      persist-tun
                                      persist-key
                                      dev tun
                                      proto tcp-server
                                      cipher BF-CBC
                                      up /etc/rc.filter_configure
                                      down /etc/rc.filter_configure
                                      server 192.168.2.0 255.255.255.0
                                      client-config-dir /var/etc/openvpn_csc
                                      push "route 192.168.1.0 255.255.255.0"
                                      lport 1194
                                      push "dhcp-option DISABLE-NBT"
                                      ca /var/etc/openvpn_server0.ca
                                      cert /var/etc/openvpn_server0.cert
                                      key /var/etc/openvpn_server0.key
                                      dh /var/etc/openvpn_server0.dh
                                      persist-remote-ip
                                      float
                                      
                                      

                                      Client configuration file :

                                      
                                      client
                                      dev tun
                                      proto tcp
                                      resolv-retry infinite
                                      nobind
                                      persist-key
                                      persist-tun
                                      ca /home/thibaut/ca.crt
                                      cert /home/thibaut/client1.crt
                                      key /home/thibaut/client1.key
                                      verb 3
                                      
                                      

                                      Client netstat -rn when it's connect to vpn server :

                                      Destination     Passerelle      Genmask         Indic   MSS Fenêtre irtt Iface
                                      192.168.2.1     192.168.2.5     255.255.255.255 UGH       0 0          0 tun0
                                      192.168.2.5     0.0.0.0         255.255.255.255 UH        0 0          0 tun0
                                      172.16.119.0    0.0.0.0         255.255.255.0   U         0 0          0 vmnet1
                                      192.168.1.0     192.168.2.5     255.255.255.0   UG        0 0          0 tun0
                                      172.16.74.0     0.0.0.0         255.255.255.0   U         0 0          0 vmnet8
                                      10.187.88.0     0.0.0.0         255.255.252.0   U         0 0          0 eth0
                                      169.254.0.0     0.0.0.0         255.255.0.0     U         0 0          0 eth0
                                      0.0.0.0         10.187.88.245   0.0.0.0         UG        0 0          0 eth0
                                      
                                      

                                      Ping a PC with address 192.168.1.144 (report with tcpdump in pfSense) :

                                      tcpdump: verbose output suppressed, use -v or -vv for full protocol decode
                                      listening on le0, link-type EN10MB (Ethernet), capture size 96 bytes
                                      09:23:57.352592 STP 802.1d, Config, Flags [none], bridge-id 8000.00:1b:2f:25:3f:70.8002, length 43
                                      09:23:57.725277 IP 192.168.2.6 > 192.168.1.144: ICMP echo request, id 46635, seq 7, length 64
                                      09:23:58.723015 IP 192.168.2.6 > 192.168.1.144: ICMP echo request, id 46635, seq 8, length 64
                                      09:23:59.408489 STP 802.1d, Config, Flags [none], bridge-id 8000.00:1b:2f:25:3f:70.8002, length 43
                                      09:23:59.716733 IP 192.168.2.6 > 192.168.1.144: ICMP echo request, id 46635, seq 9, length 64
                                      09:24:00.716003 IP 192.168.2.6 > 192.168.1.144: ICMP echo request, id 46635, seq 10, length 64
                                      09:24:01.416434 STP 802.1d, Config, Flags [none], bridge-id 8000.00:1b:2f:25:3f:70.8002, length 43
                                      09:24:01.709148 IP 192.168.2.6 > 192.168.1.144: ICMP echo request, id 46635, seq 11, length 64
                                      ^C
                                      8 packets captured
                                      9 packets received by filter
                                      0 packets dropped by kernel
                                      
                                      

                                      ipconfig /all on my Windows PC which as 192.168.1.144 :

                                      Carte Ethernet Connexion réseau sans fil:
                                      
                                              Suffixe DNS propre à la connexion : valadon.lan
                                              Description . . . . . . . . . . . : NETGEAR WG111v2 54Mbps Wireless USB 2.0 Adapter
                                              Adresse physique . . . . . . . . .: 00-1B-2F-42-AE-DB
                                              DHCP activé. . . . . . . . . . . : Oui
                                              Configuration automatique activée . . . . : Oui
                                              Adresse IP. . . . . . . . . . . . : 192.168.1.144
                                              Masque de sous-réseau . . . . . . : 255.255.255.0
                                              Passerelle par défaut . . . . . . : 192.168.1.254
                                              Serveur DHCP. . . . . . . . . . . : 192.168.1.254
                                              Serveurs DNS . . . . . . . . . .  : 192.168.1.254
                                              Serveur WINS principal. . . . . . : 10.187.88.4
                                              Bail obtenu . . . . . . . . . . . : mardi 5 mai 2009 09:03:38
                                              Bail expirant . . . . . . . . . . : mardi 5 mai 2009 11:03:38
                                      
                                      

                                      ifconfig on my linux client :

                                      ath0      Link encap:Ethernet  HWaddr 00:15:af:59:60:78  
                                                UP BROADCAST MULTICAST  MTU:1500  Metric:1
                                                Packets reçus:522 erreurs:0 :0 overruns:0 frame:0
                                                TX packets:366 errors:0 dropped:0 overruns:0 carrier:0
                                                collisions:0 lg file transmission:0 
                                                Octets reçus:191752 (187.2 KB) Octets transmis:52773 (51.5 KB)
                                      
                                      eth0      Link encap:Ethernet  HWaddr 00:1e:8c:28:4d:9c  
                                                inet adr:10.187.91.250  Bcast:10.187.91.255  Masque:255.255.252.0
                                                adr inet6: fe80::21e:8cff:fe28:4d9c/64 Scope:Lien
                                                UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
                                                Packets reçus:47532 erreurs:0 :0 overruns:0 frame:0
                                                TX packets:24031 errors:0 dropped:0 overruns:0 carrier:13
                                                collisions:0 lg file transmission:1000 
                                                Octets reçus:20305549 (19.3 MB) Octets transmis:0 (0.0 B)
                                                Mémoire:feac0000-feb00000 
                                      
                                      lo        Link encap:Boucle locale  
                                                inet adr:127.0.0.1  Masque:255.0.0.0
                                                adr inet6: ::1/128 Scope:Hôte
                                                UP LOOPBACK RUNNING  MTU:16436  Metric:1
                                                Packets reçus:3217 erreurs:0 :0 overruns:0 frame:0
                                                TX packets:3217 errors:0 dropped:0 overruns:0 carrier:0
                                                collisions:0 lg file transmission:0 
                                                Octets reçus:167880 (163.9 KB) Octets transmis:167880 (163.9 KB)
                                      
                                      tun0      Link encap:UNSPEC  HWaddr 00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00  
                                                inet adr:192.168.2.6  P-t-P:192.168.2.5  Masque:255.255.255.255
                                                UP POINTOPOINT RUNNING NOARP MULTICAST  MTU:1500  Metric:1
                                                Packets reçus:21 erreurs:0 :0 overruns:0 frame:0
                                                TX packets:389 errors:0 dropped:0 overruns:0 carrier:0
                                                collisions:0 lg file transmission:100 
                                                Octets reçus:1194 (1.1 KB) Octets transmis:32110 (31.3 KB)
                                      
                                      vmnet1    Link encap:Ethernet  HWaddr 00:50:56:c0:00:01  
                                                inet adr:172.16.119.1  Bcast:172.16.119.255  Masque:255.255.255.0
                                                adr inet6: fe80::250:56ff:fec0:1/64 Scope:Lien
                                                UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
                                                Packets reçus:0 erreurs:0 :0 overruns:0 frame:0
                                                TX packets:39 errors:0 dropped:0 overruns:0 carrier:0
                                                collisions:0 lg file transmission:1000 
                                                Octets reçus:0 (0.0 B) Octets transmis:0 (0.0 B)
                                      
                                      vmnet8    Link encap:Ethernet  HWaddr 00:50:56:c0:00:08  
                                                inet adr:172.16.74.1  Bcast:172.16.74.255  Masque:255.255.255.0
                                                adr inet6: fe80::250:56ff:fec0:8/64 Scope:Lien
                                                UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
                                                Packets reçus:0 erreurs:0 :0 overruns:0 frame:0
                                                TX packets:39 errors:0 dropped:0 overruns:0 carrier:0
                                                collisions:0 lg file transmission:1000 
                                                Octets reçus:0 (0.0 B) Octets transmis:0 (0.0 B)
                                      
                                      wifi0     Link encap:UNSPEC  HWaddr 00-15-AF-59-60-78-00-00-00-00-00-00-00-00-00-00  
                                                UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
                                                Packets reçus:57444 erreurs:0 :0 overruns:0 frame:3848
                                                TX packets:2361 errors:20 dropped:0 overruns:0 carrier:0
                                                collisions:0 lg file transmission:280 
                                                Octets reçus:6565866 (6.2 MB) Octets transmis:152379 (148.8 KB)
                                      
                                      

                                      ifconfig on my pfSenseBox :

                                      le0: flags=8843 <up,broadcast,running,simplex,multicast>metric 0 mtu 1500
                                      	options=8 <vlan_mtu>ether 00:0c:29:c2:6b:1e
                                      	inet 192.168.1.254 netmask 0xffffff00 broadcast 192.168.1.255
                                      	inet6 fe80::20c:29ff:fec2:6b1e%le0 prefixlen 64 scopeid 0x1 
                                      	media: Ethernet autoselect
                                      	status: active
                                      le1: flags=8843 <up,broadcast,running,simplex,multicast>metric 0 mtu 1500
                                      	options=8 <vlan_mtu>ether 00:0c:29:c2:6b:28
                                      	inet 10.187.88.9 netmask 0xfffffc00 broadcast 10.187.91.255
                                      	inet6 fe80::20c:29ff:fec2:6b28%le1 prefixlen 64 scopeid 0x2 
                                      	media: Ethernet autoselect
                                      	status: active
                                      plip0: flags=108810 <pointopoint,simplex,multicast,needsgiant>metric 0 mtu 1500
                                      pflog0: flags=100 <promisc>metric 0 mtu 33204
                                      lo0: flags=8049 <up,loopback,running,multicast>metric 0 mtu 16384
                                      	inet 127.0.0.1 netmask 0xff000000 
                                      	inet6 ::1 prefixlen 128 
                                      	inet6 fe80::1%lo0 prefixlen 64 scopeid 0x5 
                                      enc0: flags=0<> metric 0 mtu 1536
                                      pfsync0: flags=41 <up,running>metric 0 mtu 1460
                                      	pfsync: syncdev: lo0 syncpeer: 224.0.0.240 maxupd: 128
                                      tun0: flags=8051 <up,pointopoint,running,multicast>metric 0 mtu 1500
                                      	inet6 fe80::20c:29ff:fec2:6b1e%tun0 prefixlen 64 scopeid 0x8 
                                      	inet 192.168.2.1 --> 192.168.2.2 netmask 0xffffffff 
                                      	Opened by PID 2478</up,pointopoint,running,multicast></up,running></up,loopback,running,multicast></promisc></pointopoint,simplex,multicast,needsgiant></vlan_mtu></up,broadcast,running,simplex,multicast></vlan_mtu></up,broadcast,running,simplex,multicast> 
                                      

                                      So with this configuration, i'm not able to ping 192.168.1.144 since 192.168.2.6 …

                                      1 Reply Last reply Reply Quote 0
                                      • Cry HavokC
                                        Cry Havok
                                        last edited by

                                        On the Windows PC, what does netstat -rn show?

                                        I'll say it again - if you're not seeing packets back into the pfSense host from the Windows host then the problem is not with OpenVPN, or the remote client.  The problem is entirely in your local network and almost certainly on the Windows host.

                                        1 Reply Last reply Reply Quote 0
                                        • T
                                          Thibaut
                                          last edited by

                                          result of the netstat -rn on Windows PC :

                                          Table de routage
                                          ===========================================================================
                                          Liste d'Interfaces
                                          0x1 ........................... MS TCP Loopback interface
                                          0x2 ...00 15 c5 a5 3e 96 ...... Broadcom 440x 10/100 Integrated Controller - Min
                                          iport d'ordonnancement de paquets
                                          0x20004 ...00 1b 2f 42 ae db ...... NETGEAR WG111v2 54Mbps Wireless USB 2.0 Adap
                                          ter - Miniport d'ordonnancement de paquets
                                          ===========================================================================
                                          ===========================================================================
                                          Itinéraires actifs :
                                          Destination réseau    Masque réseau  Adr. passerelle   Adr. interface Métrique
                                                    0.0.0.0          0.0.0.0    192.168.1.254   192.168.1.144       25
                                                  127.0.0.0        255.0.0.0        127.0.0.1       127.0.0.1       1
                                                192.168.1.0    255.255.255.0    192.168.1.144   192.168.1.144       25
                                              192.168.1.144  255.255.255.255        127.0.0.1       127.0.0.1       25
                                              192.168.1.255  255.255.255.255    192.168.1.144   192.168.1.144       25
                                                  224.0.0.0        240.0.0.0    192.168.1.144   192.168.1.144       25
                                            255.255.255.255  255.255.255.255    192.168.1.144               2       1
                                            255.255.255.255  255.255.255.255    192.168.1.144   192.168.1.144       1
                                          Passerelle par défaut :     192.168.1.254
                                          ===========================================================================
                                          Itinéraires persistants :
                                            Aucun
                                          
                                          1 Reply Last reply Reply Quote 0
                                          • Cry HavokC
                                            Cry Havok
                                            last edited by

                                            So, you have the correct default gateway.

                                            This means that the probability is that you still have the firewall running.  Trying pinging the Windows host from the pfSense host.

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