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    Suricata Won't Auto Start

    Scheduled Pinned Locked Moved IDS/IPS
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    • P
      ProperCactus Rebel Alliance @ProperCactus
      last edited by

      @propercactus

      Except maybe I didn't... hmmmm

      
      igb0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
      	description: RED
      	options=8100b8<VLAN_MTU,VLAN_HWTAGGING,JUMBO_MTU,VLAN_HWCSUM,VLAN_HWFILTER>
      	ether 00:e0:67:26:3f:68
      	inet6 fe80::2e0:67ff:fe26:3f68%igb0 prefixlen 64 scopeid 0x1
      	inet 192.168.1.4 netmask 0xffffff00 broadcast 192.168.1.255
      	media: Ethernet autoselect (1000baseT <full-duplex>)
      	status: active
      	nd6 options=21<PERFORMNUD,AUTO_LINKLOCAL>
      igb1: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
      	description: GREEN
      	options=8100b8<VLAN_MTU,VLAN_HWTAGGING,JUMBO_MTU,VLAN_HWCSUM,VLAN_HWFILTER>
      	ether 00:e0:67:26:3f:69
      	inet6 fe80::2e0:67ff:fe26:3f69%igb1 prefixlen 64 scopeid 0x2
      	inet 192.168.2.1 netmask 0xffffff00 broadcast 192.168.2.255
      	media: Ethernet autoselect (1000baseT <full-duplex>)
      	status: active
      	nd6 options=21<PERFORMNUD,AUTO_LINKLOCAL>
      igb2: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
      	description: BLUE
      	options=8100b8<VLAN_MTU,VLAN_HWTAGGING,JUMBO_MTU,VLAN_HWCSUM,VLAN_HWFILTER>
      	ether 00:e0:67:26:3f:6a
      	inet6 fe80::2e0:67ff:fe26:3f6a%igb2 prefixlen 64 scopeid 0x3
      	inet 192.168.3.1 netmask 0xffffff00 broadcast 192.168.3.255
      	media: Ethernet autoselect
      	status: no carrier
      	nd6 options=21<PERFORMNUD,AUTO_LINKLOCAL>
      igb3: flags=8802<BROADCAST,SIMPLEX,MULTICAST> metric 0 mtu 1500
      	options=e507bb<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,JUMBO_MTU,VLAN_HWCSUM,TSO4,TSO6,LRO,VLAN_HWFILTER,VLAN_HWTSO,RXCSUM_IPV6,TXCSUM_IPV6>
      	ether 00:e0:67:26:3f:6b
      	media: Ethernet autoselect
      	status: no carrier
      	nd6 options=21<PERFORMNUD,AUTO_LINKLOCAL>
      enc0: flags=41<UP,RUNNING> metric 0 mtu 1536
      	groups: enc
      	nd6 options=21<PERFORMNUD,AUTO_LINKLOCAL>
      lo0: flags=8049<UP,LOOPBACK,RUNNING,MULTICAST> metric 0 mtu 16384
      	options=680003<RXCSUM,TXCSUM,LINKSTATE,RXCSUM_IPV6,TXCSUM_IPV6>
      	inet6 ::1 prefixlen 128
      	inet6 fe80::1%lo0 prefixlen 64 scopeid 0x6
      	inet 127.0.0.1 netmask 0xff000000
      	inet 10.255.255.254 netmask 0xffffffff
      	groups: lo
      	nd6 options=21<PERFORMNUD,AUTO_LINKLOCAL>
      pflog0: flags=100<PROMISC> metric 0 mtu 33160
      	groups: pflog
      pfsync0: flags=0<> metric 0 mtu 1500
      	groups: pfsync
      
      
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      • bmeeksB
        bmeeks @ProperCactus
        last edited by

        @propercactus said in Suricata Won't Auto Start:

        @bmeeks said in Suricata Won't Auto Start:

        Is it perhaps an IPv6 address for either the LAN or OP1 interface?

        I disabled ipv6 so I don't even know why it's getting ipv6 addresses at all!

        Those are the default Link-Local addresses the operating system adds by default.

        For some reason, pfSense is returning an unexpected value when Suricata queries it for interface IP address info during startup. The most likely scenario, in my mind, is that the particular interface has not finished "coming up" at the time Suricata asks pfSense about it. Of course that's just an educated guess. Looking at the HOME_NET list shown in the log, do you see an IP that is missing? The default HOME_NET should include all the locally-attached interface subnets, except on the WAN it will only include the firewall's public WAN IP (and not the whole WAN subnet you are connected into on your ISP's side).

        P 1 Reply Last reply Reply Quote 0
        • P
          ProperCactus Rebel Alliance @bmeeks
          last edited by

          @bmeeks said in Suricata Won't Auto Start:

          @propercactus said in Suricata Won't Auto Start:

          @bmeeks said in Suricata Won't Auto Start:

          Is it perhaps an IPv6 address for either the LAN or OP1 interface?

          I disabled ipv6 so I don't even know why it's getting ipv6 addresses at all!

          Those are the default Link-Local addresses the operating system adds by default.

          For some reason, pfSense is returning an unexpected value when Suricata queries it for interface IP address info during startup. The most likely scenario, in my mind, is that the particular interface has not finished "coming up" at the time Suricata asks pfSense about it. Of course that's just an educated guess. Looking at the HOME_NET list shown in the log, do you see an IP that is missing? The default HOME_NET should include all the locally-attached interface subnets, except on the WAN it will only include the firewall's public WAN IP (and not the whole WAN subnet you are connected into on your ISP's side).

          I reckon it's the wireguard tun_wg0 because on reboot ther routes to the gateway don't get set properly either

          bmeeksB cmcdonaldC 2 Replies Last reply Reply Quote 0
          • bmeeksB
            bmeeks @ProperCactus
            last edited by

            @propercactus said in Suricata Won't Auto Start:

            I reckon it's the wireguard tun_wg0 because on reboot ther routes to the gateway don't get set properly either

            I would agree. I'm not a wireguard user, but if that tunnel is not completely up at the time Suricata is starting, then pfSense could very well return unexpected information to Suricata when queried about it.

            1 Reply Last reply Reply Quote 0
            • cmcdonaldC
              cmcdonald Netgate Developer @ProperCactus
              last edited by cmcdonald

              @propercactus Suricata + WireGuard is something that needs testing, I personally haven't tested it.

              WireGuard interfaces are created as early as possible (there is an earlyshellcmd that kicks this off, and it's pushed to the very top of the earlyshellcmd list just to be extra certain it's ran first).

              If I'm understanding correctly, Suricata isn't starting even though it isn't configured to monitor tun_wg0?

              Need help fast? https://www.netgate.com/support

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              • P
                ProperCactus Rebel Alliance
                last edited by

                @bmeeks yea that was it, when I removed the wireguard S2S it works now on reboot. Gunna have to revert to IPsec S2S I think.

                @theonemcdonald said in Suricata Won't Auto Start:

                If I'm understanding correctly, Suricata isn't starting even though it isn't configured to monitor tun_wg0?

                Exactly yes, it's trying to get an ipv6 address from tun_wg0 to add to HOME_NET and it sticks a dummy value called "Array" in the list instead which breaks the Suricata config.

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                • bmeeksB
                  bmeeks
                  last edited by

                  Suricata, when starting or regenerating the suricata.yaml configuration file for an interface, will ask pfSense for a list of all local interfaces so that it can generate a default HOME_NET variable that includes the IP subnets for all the locally-attached interfaces. As I mentioned before, for the WAN side, it will only include the actual public WAN IP (so a /32 subnet mask). For the other local interfaces, it will ask pfSense for the mask info.

                  cmcdonaldC 1 Reply Last reply Reply Quote 0
                  • cmcdonaldC
                    cmcdonald Netgate Developer @bmeeks
                    last edited by cmcdonald

                    @ProperCactus what if you as a test assign an IPv6 address to your tun_wg0 interface. Just so it doesn't return an empty array?

                    Need help fast? https://www.netgate.com/support

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                    • P
                      ProperCactus Rebel Alliance @cmcdonald
                      last edited by

                      @theonemcdonald that might do it coz currently it's this:

                      tun_wg0: flags=80c1<UP,RUNNING,NOARP,MULTICAST> metric 0 mtu 1420
                      	options=80000<LINKSTATE>
                      	inet 10.128.128.1 netmask 0xffffff00
                      	groups: wg WireGuard
                      	nd6 options=101<PERFORMNUD,NO_DAD>
                      

                      I will try with the ipv6 but first i'm trying to understand what I do gateway wise as it doesn't seem right to create static routes out a gateway that is not connected to the tunnel like you suggest?

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                      • P
                        ProperCactus Rebel Alliance @cmcdonald
                        last edited by ProperCactus

                        @theonemcdonald

                        tun_wg0: flags=80c1<UP,RUNNING,NOARP,MULTICAST> metric 0 mtu 1500
                        	description: WREGRD
                        	options=80000<LINKSTATE>
                        	inet 10.128.128.1 netmask 0xffffffff
                        	inet6 fd1f:c547:3e98:b32f:: prefixlen 64
                        	groups: wg WireGuard
                        	nd6 options=101<PERFORMNUD,NO_DAD>
                        

                        Gave it a local link ipv6 but the issue persists.

                        If I delete the tun_wg0 the issue goes away.

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