Fantasy Grounds Connections Explained

[Wenin]

I ran into an issue due to the method of my testing of the connection. Credit goes to Zacchaeus for identifying my issue.

I was testing my ability to connect to my FG server by launching FG twice from the same computer. One instance was running as the server, while the second instance would attempt to connect using the external IP address. The connection was being refused, even though PortChecker sites indicated that the 1802 port was open. Once I had an external user connect using my alias, the connection was successful.

In the past I've successfully used this method of testing to determine if I could host a FG session. Either Xfinity changed something, or my new Arris Surfboard SBG8300 router, doesn't allow my computer to connect to itself using the external IP address. With the solution in hand, I read through the first two posts of this thread, and couldn't find a note that indicated that my method of testing would result in a false negative.

I'd recommend adding a note about testing the connection requires someone external to conduct the test.

Thanks to those that helped through the years to put together all the information here!

[Sulimo]

I ran into an issue due to the method of my testing of the connection. Credit goes to Zacchaeus for identifying my issue.

I was testing my ability to connect to my FG server by launching FG twice from the same computer. One instance was running as the server, while the second instance would attempt to connect using the external IP address. The connection was being refused, even though PortChecker sites indicated that the 1802 port was open. Once I had an external user connect using my alias, the connection was successful.

In the past I've successfully used this method of testing to determine if I could host a FG session. Either Xfinity changed something, or my new Arris Surfboard SBG8300 router, doesn't allow my computer to connect to itself using the external IP address. With the solution in hand, I read through the first two posts of this thread, and couldn't find a note that indicated that my method of testing would result in a false negative.

I'd recommend adding a note about testing the connection requires someone external to conduct the test.

Thanks to those that helped through the years to put together all the information here!

It's called hairpinning, not all routers support it. Usually consumer level equipment does not support it, so I am surprised that your Comcast router worked, maybe UPnP configured it for you previously, and your new router does not support it.

Anyway, glad you got it all worked out.

[AdanGM]

Just start configuring my FG today. I follow all the advice but it doesn't work

1. Your LAN IP Address
R: 192.168.0.20

2. The first two sets (octects) of your WAN IP as displayed by Fantasy Grounds and as displayed by your Router
R: 192.168.***.*** from Default Gateway of cmd ipconfig

3. Whether you are using Wired or Wireless (and not both)
R: Wireless

4. Confirmation that you have set your Adapter in Network and Sharing Centre to Private
R: Set to private, done.

5. Confirmation of what AV you are running and whether you have set any exceptions
R: Kaspersky Security Cloud Personal, and set exception to Inbound/outbound TCP for port 1802 and any address
fg_kaspersky_firewall_rule.png

6. Post the results of the tracert 8.8.8.8 command (if you have security concerns you can remove this bit once its been responded to)
R:
1 3 ms 18 ms 4 ms 192.168.0.1
2 22 ms 23 ms 21 ms CableLink-200-188-159-93.Hosts.Cablevision.com.mx [200.188.159.93]
3 20 ms 21 ms 14 ms CableLink-200-188-159-93.Hosts.Cablevision.com.mx [200.188.159.93]
4 17 ms 14 ms 13 ms 10.254.1.77
5 18 ms 18 ms 16 ms be4352.rcr21.b020377-1.mfe02.atlas.cogentco.com [38.104.176.69]
6 18 ms 17 ms 20 ms be2630.ccr22.mfe02.atlas.cogentco.com [154.54.84.105]
7 25 ms 25 ms 32 ms be2888.ccr42.iah01.atlas.cogentco.com [154.54.47.45]
8 32 ms 43 ms 31 ms be2443.ccr32.dfw01.atlas.cogentco.com [154.54.44.230]
9 31 ms 32 ms 33 ms be2764.ccr41.dfw03.atlas.cogentco.com [154.54.47.214]
10 30 ms 35 ms 33 ms tata.dfw03.atlas.cogentco.com [154.54.12.106]
11 30 ms 29 ms 39 ms 66.110.56.139
12 33 ms 33 ms 32 ms 209.85.246.154
13 35 ms 34 ms 31 ms 172.253.78.225
14 36 ms 31 ms 30 ms dns.google [8.8.8.8]

7. Confirmation as to what you have setup in your Router if changes have been made
R: Port Forwarding configuration:
InbundPort: 1802-1802
Type: TCP
Private Ip Address: 192.168.0.20
LocalPort: 1802-1802
fg_router_port_forwarding.png


8. Confirmation you do or do not have any Virtualisation NICs
R: I dont think I have any virtualization.

[Trenloe]

2. The first two sets (octects) of your WAN IP as displayed by Fantasy Grounds and as displayed by your Router
R: 192.168.***.*** from Default Gateway of cmd ipconfig

That's not your WAN (External) IP address.

What does FG show for the External IP address?

What does your router show for your WAN/External IP address?

To confirm - you're using FG Classic not Unity?

And when you say "it doesn't work" - what, exactly, doesn't work?

[AdanGM]

Sorry, I´m new on this.

FG show that my External IP Address is 187.161.181.2.

My Router shows my WAN IP Address as 10.102.232.55.

Yes, I´m using FG Classic.

I´m still in the step of Running the test and getting FAILURE response.

[damned]

Sorry, I´m new on this.

FG show that my External IP Address is 187.161.181.2.

My Router shows my WAN IP Address as 10.102.232.55.

Yes, I´m using FG Classic.

I´m still in the step of Running the test and getting FAILURE response.

Hi Adan - its not 100% - but very likely you cant port forward if your router has a 10.something WAN address.
Give your ISP a call and tell them -
"I have a new home security system going in and it needs an IPv4 port forward. Can you help me set that up?"
If they can help you give them your PC LAN IP address and TCP port 1802 and ask them to set that up.
Otherwise report back what they say.

[Barkashur]

Hey there! After wanting to test some things for my new campaign I discovered that sadly, my friends can no longer connect to me.
It did work in the past but I took a break from GMing for a while so whatever screwed this up probably went unnoticed.
At first I thought my router simply assigned me a new IP so the old port forwarding rule was no longer valid but no dice, IP was still the same. (Did try to recreate the rule regardless)
Anyway, here's the usual info dump I am hoping for some help!

1. Your LAN IP Address
192.168.178.37

2. The first two sets (octects) of your WAN IP as displayed by Fantasy Grounds and as displayed by your Router
FG shows 88.130.152.190
Router also shows 88.130.152.190

3. Whether you are using Wired or Wireless (and not both)
Wired

4. Confirmation that you have set your Adapter in Network and Sharing Centre to Private
Yup, set to Private.
5. Confirmation of what AV you are running and whether you have set any exceptions
Windows Defender and I did manually set the TCP 1802 rule for inbound connections.

6. Post the results of the tracert 8.8.8.8 command (if you have security concerns you can remove this bit once its been responded to)


7. Confirmation as to what you have setup in your Router if changes have been made
I set up the port forwarding rule for the TCP port 1802 for my PC.

8. Confirmation you do or do not have any Virtualisation NICs
No NICs whatsoever.

[damned]

Welcome Barkashur

If you look at your tracert you can see another 192.168 address in there.
Everything else looks ok.

I would call your ISP and tell them you have a security system being installed and it needs an IPv4 port forward - can they help.
See what they say.