** Connection problems? We need your data to fix it! **

A suggestion from Max, the Technical Director & the man who made the engine:

If you are experiencing network related issues (999 ping, red plug icon, cant establish connection to server, authentication issues etc) please run this command in your console (~ key) :

net_log 3

• Then after your problem is sufficiently experienced / captured, exit NS2 (DO NOT RUN IT AGAIN OR IT WILL ERASE THE LOG)
• Check in your Appdata folder (Windows key + R, type %appdata% then go to Natural Selection 2) and see the now very lengthy log.txt
• Copy and paste the entirety of the log to pastebin.com and then put a link to it here, along with the description of your problem and your DXDIAG report (see stickied thread, and please also use pastebin for this as well)
• We also need to know if you are using a wireless connection and if you have tried changing the wireless channel? (from 6 to 3 for example)

Thanks for helping! This will really help gather more accurate data on whats occuring for you guys out there having these issues!
-Iron


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FLOODING / CONNECTION ERROR FREEZES INTERNET & SERVER BROWSER
Go to your router's settings (you may need to google how to do this with your particular router model) and change this:
Max NAT/Firewall Session Per User : Change from default 1024 to the max 4096




IF YOU ARE USING A THOMSON ROUTER THERE ARE KNOWN ISSUES WITH FLOODING,
Please try this fix first below, found on the second page here.

Solution for those with Thomson routers
Start --> services.msc
Stop SSDP discovery service [SSDP network discovery]--> anwer Yes to the dialog box (to be done after each boot).

Control Panel --> internet/sharing center, "change advancing sharing settings" tab --> Turn off network discovery.

And then, in the router configuration (example: http://192.168.1.254)
--> router config menu--> UPnP tab --> deactivateUPnP AV and UPnP IGD.
Source

If that doesnt work then try these:

O2 Wireless Box fix:
http://www.unknownworlds.com/ns2/forums/in...t&p=2031438
or this?
https://support.steampowered.com/kb_article...=5623-QOSV-5250
or this?
https://www.youtube.com/watch?v=a8YiopTocPk
or this?
http://forums.tripwireinteractive.com/showthread.php?t=67759
or this?
http://forums.tripwireinteractive.com/showthread.php?t=38891



IF YOU ARE USING SKY BROADBAND AND GET 999 PING 100% CHOKE:
This was due to firmware issue which Sky rolled out to all of the customers routers.
You must rollback your firmware!
The issue forum can be found here:
http://helpforum.sky.com/t5/Sky-Broadband-...ues/td-p/529736


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For some this might partially fix the issue --Zaggy


edit:

Unable to see any servers?
As a Workaround, use below websites or tool to browse and connect to servers:
http://hypernovadesign.co.uk/nanogrid/
http://www.play4dead.com/ns2/
http://ns2stats.org/server/index
http://ns2servers.devicenull.org/index.php - only shows IP addresses, to manually connect, open the console with ~ and type "connect 123.123.123.123" and hit enter to connect
Camron's server browser tool

Known Solutions: