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<johnny>bravo 2020 年 5 月 22 日 上午 4:48
CSGO Dedicated Server Connectivity: Remote Works; Inside LAN disconnects
Stood up a CSGO dedicated server in an Ubuntu container. Server key generated, firewall and NAT rules connect just fun (no logs indicating drops). connects great when connecting from the outside. For example, cell phone hot-spot. Take the same computer, connect on the internal network, and connectivity fails. Resets to the main menu from the client side.

sv_lan 0 is setup
Gameserver logs into steam and receives identity
VAC Secure mode is noted with a server id
Attempted to use the container referenced by steam community server guide, custom built ontop of core ubuntu, and native ubuntu install all with the same experience.
Internal connectivity has been tested on different subnet as well as on the same subnet.
Address space is within reserved address spaces, but not RFC1918. 198.18.x.x

Summary for later searches:
Connectivity from outside is successful, however internal fails
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目前顯示第 1-15 則留言，共 15 則
Blaquicat 2020 年 5 月 22 日 上午 6:42 
probably a loopback issue.

Are you trying to connect using the external ip or the internal ip?
#1
<johnny>bravo 2020 年 5 月 22 日 上午 7:14 
Thanks for the though. Attempt to connect via internal ip internall, external ip externally. DNS can resolve to the correct IP both internally and externally.
#2
[N]ebsun 2020 年 5 月 22 日 上午 7:19 
what port - does nat translate to a different port from outside?
have you used -ip in the command line config? try using -ip 0.0.0.0
#3
Blaquicat 2020 年 5 月 22 日 上午 7:30 
引用自 <johnny>bravo：
Thanks for the though. Attempt to connect via internal ip internall, external ip externally. DNS can resolve to the correct IP both internally and externally.
DNS does not resolve ip, as its function is to resolve names into ips..
Try this:
引用自 Nebsun：
have you used -ip in the command line config? try using -ip 0.0.0.0
You can try with your internal ip or 0.0.0.0, most people 0 works, for me i had to put the internal ip..
./srcds_run -maxplayers 12 -ip 192.168.0.10 -port 25595 -game csgo -console -usercon +game_type 1 +game_mode 0 +mapgroup mg_armsrace +map ar_shoots +sv_setsteamaccount *IDHERE* -net_port_try 1
like that..
最後修改者：Blaquicat; 2020 年 5 月 22 日 上午 7:31
#4
<johnny>bravo 2020 年 5 月 22 日 上午 9:00 
Thanks for the continued thoughts.

I can attempt 0.0.0.0 for the -ip setting, but seems that is only beneficial to binding within a multiple interfaced server (not the case here). It currently is using the internal IP address (198.18.2.100) with the +net_public_adr being the DNS entry.

NAT is being used only from external connection (which are successful), but port 27015 is not being altered. Upon connecting internally, the firewall shows the UDP packets passed.
#5
Blaquicat 2020 年 5 月 22 日 上午 9:31 
引用自 <johnny>bravo：
Thanks for the continued thoughts.

I can attempt 0.0.0.0 for the -ip setting, but seems that is only beneficial to binding within a multiple interfaced server (not the case here). It currently is using the internal IP address (198.18.2.100) with the +net_public_adr being the DNS entry.

NAT is being used only from external connection (which are successful), but port 27015 is not being altered. Upon connecting internally, the firewall shows the UDP packets passed.
According to the cs go cvars page, +net_public_adr is supposed to be your external ip.

net_public_adr 0 For servers behind NAT/DHCP meant to be exposed to the public internet, this is the public facing ip address string: ('x.x.x.x')
#6
[N]ebsun 2020 年 5 月 22 日 上午 11:08 
引用自 <johnny>bravo：
Thanks for the continued thoughts.

I can attempt 0.0.0.0 for the -ip setting, but seems that is only beneficial to binding within a multiple interfaced server (not the case here). It currently is using the internal IP address (198.18.2.100) with the +net_public_adr being the DNS entry.

NAT is being used only from external connection (which are successful), but port 27015 is not being altered. Upon connecting internally, the firewall shows the UDP packets passed.

Not sure why you would need to specify a DNS entry to the game command line..
DNS just resolves domain names to ip addresses, so if you had a domain "example.com" pointing to the public ip of your game server, you can use "connect example.com:port" in game to connect (or just example.com if using default ports). It's not something you should need to specify on the game server itself - and I don't think this would be resolved by the game server either

0.0.0.0 ip is useful if you don't care what ip or interface your server really uses, so if you add another interface or changed the ip in the future all you would need to update would be the nat ports.
最後修改者：[N]ebsun; 2020 年 5 月 22 日 上午 11:10
#7
<johnny>bravo 2020 年 5 月 22 日 下午 7:38 
From previous testing, the dns name as the +net_public_addr would be entered into the "save as a favorite" so if i ever changed IP's, the dns could be maintained. This keeps the representation of your server should you switch providers or your service provider change IP's.it has been a few years (2016?) since my last server hosting when this was used.

After switching out to my public ip, no success for LAN connectivity.

thanks for reading still :)
#8
<johnny>bravo 2020 年 5 月 22 日 下午 7:42 
through testing, i have added the sv_region and +clientport with no success. Below is the launch script for reference. Thanks for the continued input!

cat serverlaunch.sh
#!/bin/bash

/home/steam/csgo-dedicated/csgo/./srcds_run -game csgo -tickrate 128 -port 27015 -condebug -usercon +game_type 0 +game_mode 1 +sv_setsteamaccount <topsecret> -net_port_try 1 +mapgroup mg_active +map de_dust2 +ip <internal ip> +net_public_adr <external IP or DNS> +sv_region 0 +clientport 27005
最後修改者：<johnny>bravo; 2020 年 5 月 23 日 上午 5:17
#9
Blaquicat 2020 年 5 月 22 日 下午 8:55 
引用自 <johnny>bravo：
From previous testing, the dns name as the +net_public_addr would be entered into the "save as a favorite" so if i ever changed IP's, the dns could be maintained. This keeps the representation of your server should you switch providers or your service provider change IP's.it has been a few years (2016?) since my last server hosting when this was used.

After switching out to my public ip, no success for LAN connectivity.

thanks for reading still :)
Does not make any sense putting the DNS there, you dont even need dns to play on most servers, as they dont have names..
You need for browsing..

+clientport this dont do anything on the server side, you can remove.
最後修改者：Blaquicat; 2020 年 5 月 22 日 下午 8:56
#10
THE ONE AND ONLY 2020 年 6 月 9 日 上午 10:15 
...
#11
<johnny>bravo 2020 年 7 月 24 日 下午 2:02 
Solved:

Steam / CSGO does not support RFC5735. As soon as the internal addressing (198.18.0.0/15 range) was moved to a RFC1918 address (192.168.0.0/16 range), the server was accessible.

Thanks!
#12
Aaaa 2020 年 9 月 24 日 上午 7:50 
it's not supported
#13
irem 2020 年 10 月 12 日 下午 12:41 
what port - does nat translate to a different port from outside?
have you used -ip in the command line config? try using -ip 0.0.0.0

:steambored:
#14
<johnny>bravo 2020 年 10 月 18 日 下午 5:56 
Outside worked fine due to NAT. It is not a steam server issue, but a steam client issue. If the client resolves from the outside the public IP and connects via the public IP, it is unaware of the NAT. Internal clients would break as there is no NAT involved, resolving directly to the 198.18.0.0/15 address.
#15
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所有討論 > 工具和伺服器 > Source 專用伺服器（Linux） > 主題細節
張貼日期： 2020 年 5 月 22 日 上午 4:48
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