site-to-site, cannot ping from one lan to other lan

[Konstanti]

@asdffdsa6131
On the Openvpn server side
In WEBGUI
/Diagnostics/Packet Capture /
Interface Openvpn
Protocol ICMP
Start

what is the result ?

[A Former User]

thank much,

18:05:09.356421 IP 192.168.62.181 > 10.0.0.4: ICMP echo request, id 1, seq 15875, length 40
18:05:11.355996 IP 192.168.62.181 > 10.0.0.4: ICMP echo request, id 1, seq 15876, length 40
18:05:13.344929 IP 192.168.62.181 > 10.0.0.4: ICMP echo request, id 1, seq 15877, length 40

[Konstanti]

@asdffdsa6131

Now the same is on the Openvpn client side
WAN interface only
we continue to ping 192.168.62.181 > 10.0.0.4

[A Former User]

192.168.62.181 is my windows 10 laptop

[A Former User]

openvpn client side, wan interface only

18:10:15.358365 IP 192.168.62.181 > 10.0.0.4: ICMP echo request, id 1, seq 16028, length 40
18:10:17.360473 IP 192.168.62.181 > 10.0.0.4: ICMP echo request, id 1, seq 16029, length 40

[Konstanti]

@asdffdsa6131
We can see that the tunnel is working
but the host 10.0.0.4 does not respond to pings
Can host 192.168.62.181 ping 10.0.0.7 ?
If you run ping 10.0.0.4 ->192.168.62.181 (or 192.168.62.1)
What will packet capture show ?

[A Former User]

We can see that the tunnel is working
--- correct
but the host 10.0.0.4 does not respond to pings
--- correct
Can host 192.168.62.181 ping 10.0.0.7 ?
--- I tried again and the answer is no
If you run ping 10.0.0.4 ->192.168.62.181
--- I have a continous ping from 10.0.0.4 -> 192.168.62.181
What will packet capture show ?
--- If you mean on the openvpn client

---

18:22:40.814131 IP 40.97.154.82.443 > 47.20.7.132.20255: tcp 43
18:22:40.866569 IP 47.20.7.132.20255 > 40.97.154.82.443: tcp 0
18:22:41.070851 IP 47.20.7.132 > 47.20.4.1: ICMP echo request, id 16129, seq 7040, length 8
18:22:41.077374 IP 47.20.4.1 > 47.20.7.132: ICMP echo reply, id 16129, seq 7040, length 8
18:22:41.567306 IP 40.85.175.163.443 > 47.20.7.132.40913: tcp 51
18:22:41.603084 IP 47.20.7.132 > 47.20.4.1: ICMP echo request, id 16129, seq 7041, length 8
18:22:41.609795 IP 47.20.4.1 > 47.20.7.132: ICMP echo reply, id 16129, seq 7041, length 8
18:22:41.617013 IP 47.20.7.132.40913 > 40.85.175.163.443: tcp 0
18:22:42.132944 IP 47.20.7.132 > 47.20.4.1: ICMP echo request, id 16129, seq 7042, length 8
18:22:42.142050 IP 47.20.4.1 > 47.20.7.132: ICMP echo reply, id 16129, seq 7042, length 8
18:22:42.665103 IP 47.20.7.132 > 47.20.4.1: ICMP echo request, id 16129, seq 7043, length 8
18:22:42.668422 IP 47.20.7.132.4987 > 38.27.106.14.443: tcp 0
18:22:42.677302 IP 47.20.4.1 > 47.20.7.132: ICMP echo reply, id 16129, seq 7043, length 8
18:22:42.685356 IP 38.27.106.14.443 > 47.20.7.132.4987: tcp 0
18:22:42.685659 IP 47.20.7.132.4987 > 38.27.106.14.443: tcp 0
18:22:42.697633 IP 47.20.7.132.4987 > 38.27.106.14.443: tcp 517
18:22:42.716822 IP 38.27.106.14.443 > 47.20.7.132.4987: tcp 0
18:22:42.731861 IP 47.20.7.132.37964 > 1.1.1.1.853: tcp 0
18:22:42.737668 IP 47.20.7.132.10038 > 23.10.93.204.443: tcp 226
18:22:42.738583 IP 38.27.106.14.443 > 47.20.7.132.4987: tcp 1460
18:22:42.738726 IP 38.27.106.14.443 > 47.20.7.132.4987: tcp 1460
18:22:42.738752 IP 38.27.106.14.443 > 47.20.7.132.4987: tcp 1460
18:22:42.738881 IP 38.27.106.14.443 > 47.20.7.132.4987: tcp 1460
18:22:42.738907 IP 38.27.106.14.443 > 47.20.7.132.4987: tcp 521
18:22:42.738942 IP 47.20.7.132.4987 > 38.27.106.14.443: tcp 0
18:22:42.739068 IP 47.20.7.132.4987 > 38.27.106.14.443: tcp 0
18:22:42.739089 IP 47.20.7.132.4987 > 38.27.106.14.443: tcp 0
18:22:42.741041 IP 47.20.7.132.4987 > 38.27.106.14.443: tcp 126
18:22:42.743358 IP 1.1.1.1.853 > 47.20.7.132.37964: tcp 0
18:22:42.743432 IP 47.20.7.132.37964 > 1.1.1.1.853: tcp 0
18:22:42.743650 IP 47.20.7.132.37964 > 1.1.1.1.853: tcp 311
18:22:42.754079 IP 23.10.93.204.443 > 47.20.7.132.10038: tcp 128
18:22:42.754123 IP 23.10.93.204.443 > 47.20.7.132.10038: tcp 38
18:22:42.756267 IP 47.20.7.132.10038 > 23.10.93.204.443: tcp 0
18:22:42.756930 IP 1.1.1.1.853 > 47.20.7.132.37964: tcp 0
18:22:42.757434 IP 1.1.1.1.853 > 47.20.7.132.37964: tcp 1460
18:22:42.757472 IP 47.20.7.132.37964 > 1.1.1.1.853: tcp 0
18:22:42.757482 IP 1.1.1.1.853 > 47.20.7.132.37964: tcp 1242
18:22:42.757509 IP 47.20.7.132.37964 > 1.1.1.1.853: tcp 0
18:22:42.758787 IP 38.27.106.14.443 > 47.20.7.132.4987: tcp 51
18:22:42.759295 IP 47.20.7.132.4987 > 38.27.106.14.443: tcp 242
18:22:42.769256 IP 47.20.7.132.37964 > 1.1.1.1.853: tcp 126
18:22:42.779281 IP 1.1.1.1.853 > 47.20.7.132.37964: tcp 424
18:22:42.779366 IP 47.20.7.132.37964 > 1.1.1.1.853: tcp 0
18:22:42.779793 IP 47.20.7.132.37964 > 1.1.1.1.853: tcp 86
18:22:42.790808 IP 1.1.1.1.853 > 47.20.7.132.37964: tcp 499
18:22:42.790873 IP 47.20.7.132.37964 > 1.1.1.1.853: tcp 0
18:22:42.791582 IP 47.20.7.132.37964 > 1.1.1.1.853: tcp 31
18:22:42.791901 IP 47.20.7.132.37964 > 1.1.1.1.853: tcp 0
18:22:42.797959 IP 38.27.106.14.443 > 47.20.7.132.4987: tcp 356
18:22:42.800224 IP 1.1.1.1.853 > 47.20.7.132.37964: tcp 0
18:22:42.800262 IP 1.1.1.1.853 > 47.20.7.132.37964: tcp 0
18:22:42.800644 IP 1.1.1.1.853 > 47.20.7.132.37964: tcp 0
18:22:42.800689 IP 47.20.7.132.37964 > 1.1.1.1.853: tcp 0
18:22:42.829447 IP 40.97.228.178.443 > 47.20.7.132.30169: tcp 43
18:22:42.837753 IP 47.20.7.132.4987 > 38.27.106.14.443: tcp 0
18:22:42.894908 IP 47.20.7.132.30169 > 40.97.228.178.443: tcp 0
18:22:42.993896 IP 38.27.106.14.443 > 47.20.7.132.4987: tcp 1460
18:22:42.993988 IP 38.27.106.14.443 > 47.20.7.132.4987: tcp 927
18:22:42.994014 IP 38.27.106.14.443 > 47.20.7.132.4987: tcp 1460
18:22:42.994147 IP 38.27.106.14.443 > 47.20.7.132.4987: tcp 1460
18:22:42.994179 IP 38.27.106.14.443 > 47.20.7.132.4987: tcp 646
18:22:42.994202 IP 38.27.106.14.443 > 47.20.7.132.4987: tcp 1460
18:22:42.994226 IP 38.27.106.14.443 > 47.20.7.132.4987: tcp 1460
18:22:42.994250 IP 38.27.106.14.443 > 47.20.7.132.4987: tcp 1460
18:22:42.994274 IP 38.27.106.14.443 > 47.20.7.132.4987: tcp 365
18:22:42.994295 IP 38.27.106.14.443 > 47.20.7.132.4987: tcp 1460
18:22:42.994447 IP 47.20.7.132.4987 > 38.27.106.14.443: tcp 0
18:22:42.994468 IP 47.20.7.132.4987 > 38.27.106.14.443: tcp 0
18:22:42.994489 IP 47.20.7.132.4987 > 38.27.106.14.443: tcp 0
18:22:42.994516 IP 47.20.7.132.4987 > 38.27.106.14.443: tcp 0
18:22:42.994536 IP 47.20.7.132.4987 > 38.27.106.14.443: tcp 0
18:22:42.994662 IP 47.20.7.132.4987 > 38.27.106.14.443: tcp 0
18:22:43.011965 IP 38.27.106.14.443 > 47.20.7.132.4987: tcp 1460
18:22:43.011992 IP 38.27.106.14.443 > 47.20.7.132.4987: tcp 1460
18:22:43.012016 IP 38.27.106.14.443 > 47.20.7.132.4987: tcp 1460
18:22:43.012277 IP 47.20.7.132.4987 > 38.27.106.14.443: tcp 0
18:22:43.012297 IP 47.20.7.132.4987 > 38.27.106.14.443: tcp 0
18:22:43.012316 IP 47.20.7.132.4987 > 38.27.106.14.443: tcp 0
18:22:43.017503 IP 38.27.106.14.443 > 47.20.7.132.4987: tcp 1460
18:22:43.017529 IP 38.27.106.14.443 > 47.20.7.132.4987: tcp 1460
18:22:43.017785 IP 38.27.106.14.443 > 47.20.7.132.4987: tcp 1460
18:22:43.017823 IP 47.20.7.132.4987 > 38.27.106.14.443: tcp 0
18:22:43.017843 IP 47.20.7.132.4987 > 38.27.106.14.443: tcp 0
18:22:43.017850 IP 38.27.106.14.443 > 47.20.7.132.4987: tcp 1460
18:22:43.017978 IP 38.27.106.14.443 > 47.20.7.132.4987: tcp 1460
18:22:43.018004 IP 38.27.106.14.443 > 47.20.7.132.4987: tcp 1460
18:22:43.018040 IP 47.20.7.132.4987 > 38.27.106.14.443: tcp 0
18:22:43.018151 IP 38.27.106.14.443 > 47.20.7.132.4987: tcp 1460
18:22:43.018190 IP 47.20.7.132.4987 > 38.27.106.14.443: tcp 0
18:22:43.018197 IP 38.27.106.14.443 > 47.20.7.132.4987: tcp 1460
18:22:43.018220 IP 38.27.106.14.443 > 47.20.7.132.4987: tcp 1460
18:22:43.018244 IP 38.27.106.14.443 > 47.20.7.132.4987: tcp 1460
18:22:43.018280 IP 47.20.7.132.4987 > 38.27.106.14.443: tcp 0
18:22:43.018406 IP 47.20.7.132.4987 > 38.27.106.14.443: tcp 0
18:22:43.018413 IP 38.27.106.14.443 > 47.20.7.132.4987: tcp 1460
18:22:43.018437 IP 38.27.106.14.443 > 47.20.7.132.4987: tcp 1460
18:22:43.018473 IP 47.20.7.132.4987 > 38.27.106.14.443: tcp 0
18:22:43.018493 IP 47.20.7.132.4987 > 38.27.106.14.443: tcp 0
18:22:43.018609 IP 38.27.106.14.443 > 47.20.7.132.4987: tcp 1460

[A Former User]

sorry made mistake on the packet capture, that was from server, not client hang on.

[A Former User]

i tried a few times, the packets captured is blank

[Konstanti]

@asdffdsa6131
Host 10.0.0.4 not rebooted ?
Check if there is a route to 192.168 in its routing table

[A Former User]

Host 10.0.0.4 not rebooted ?
--- not rebooted
Check if there is a route to 192.168 in its routing table
--- i checked a few times, each time I try to re-add the rule I get the following error
C:\Users\user01>route add 192.168.62.0 mask 255.255.255.0 10.0.0.7
The route addition failed: The object already exists.

[Konstanti]

@asdffdsa6131
Good
Let's try another way
Ping 192.168.62.181->10.0.0.4 (or 10.0.0.1 or any other host from 10.0.0.0/24)
on the client side
Firewall/NAT Outbound/Edit (manual outbound)

If everything is configured correctly, then in packet capture (client side) you will see
10.0.0.7 ->10.0.0.4
10.0.0.4 ->10.0.0.7

[A Former User]

Ping 192.168.62.181->10.0.0.4
--- I have a continous ping going all the time.

Ping 192.168.62.181->10.0.0.4 continues to fail
ping 192.168.62.181 -> 10.0.0.1 also fails.

does this have something to do with that the client is an azure virtual machine and has no lan interface, just a wan interface?

[Konstanti]

@asdffdsa6131

NAT OUTBOUND changes the sender address (192.168.62.181) to its network address in the WAN interface (10.0.0.7) .the capture and package should show this
for example
IP 10.0.0.7 > 10.0.0.4: ICMP echo request, id 1, seq 16028, length 40
IP 10.0.0.7 > 10.0.0.4: ICMP echo request, id 1, seq 16029, length 40

[A Former User]

not sure what you are asking, sorry

[Konstanti]

@asdffdsa6131
192.168.62.181 -> 10.0.0.7 (nat outbound) -> 10.0.0.4 ->10.0.0.7 -> 192.168.62.181

In packet capture you should see instead of 192.168.62.181 10.0.0.7 (client side , wan interface)

[A Former User]

sorry, again I am not clear what you are asking for

[Konstanti]

@asdffdsa6131
NAT OUTBOUND changes the sender address (192.168.62.181) to its network address in the WAN interface (10.0.0.7) .the packet capture should show this (client side , wan interface)
for example
IP 10.0.0.7 > 10.0.0.4: ICMP echo request, id 1, seq 16028, length 40
IP 10.0.0.7 > 10.0.0.4: ICMP echo request, id 1, seq 16029, length 40

[A Former User]

I have to stop now, sorry,
I want to thank you much for you time.

we are missing something simple.
As far as I can tell, all the settings are correct on the sever and client.

I still think there is some issue with the fact the the client is in azure cloud and there is not lan interface, just a wan of 10.0.0.0/24.
good night,

[stephenw10]

Ok so there are two things and both were touched on.

By default pfSense NATs the traffic leaving the WAN but you probably don't want that. This is all private address space.

So go to the outbound NAT rules on the client end in Azure and remove them all. There should be NO NAT happening at that end.

Then the clients in Azure need a route back to 192.168.62.X. You tried to add that directly to the client, which should work, but you can also add that route in Azure so all clients there get routed to 10.0.0.7 for 192.168.62.X.

You will need firewall rules on the WAN to allow that traffic in.

You must also have enabled IP forwarding in Azure for the pfSense WAN NIC. Otherwise it will block traffic with destination 192.168.62.X as that does not exist on that VM:
https://docs.microsoft.com/en-us/azure/virtual-network/virtual-network-network-interface#enable-or-disable-ip-forwarding

That may well be what was breaking this with NAT in place but it's better without NAT.

Steve