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If you are having trouble with the Networking, this page will help you.
For example an inability to join games, inability to host games,
Firewall/Router/NAT issues etc.
 Network Port Usage |
Defcon
uses the following Network ports (by default) for multiplayer games:
5008 (UDP) : MetaServer (public server listing)
5009 (UDP) : MetaServer (public server listing)
5010
(UDP) : Game Server
5011 (UDP)
: Game Client
Note: If these ports are unavailable when
Defcon starts up, it will simply use any available port. |
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| Firewalls |
If you
are running a Firewall (eg Windows Firewall) ensure it is set to allow
Defcon to communicate on those ports.
If that doesn't work,
try disabling any Firewalls you have running. |
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Using a Router? | If you connect to the Internet through a hardware
Router or NAT Firewall, it is possible that your Router is preventing
Defcon from connecting to games on the Internet.
To see if
this is the case try bypassing your Router and connecting directly to
the Internet.
Some Routers perform "Port Scan and DOS
Protection" or something similar. This is designed to protect against
hackers, but can sometimes interfere with Defcon network traffic. If
your Router runs this service try disabling it. |
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| Disable UPnP |
| On some
Routers (eg Belkin), having UPnP enabled can cause Defcon's networking
to fail. Try disabling UPnP and see if that fixes the problem. |
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| Using DMZ |
| Some
Routers allow you to set up a single computer on your Local Network as
a DMZ Server (De-Militarised-Zone). This means your computer will be
directly accessing the Internet. If you set up your Game computer as
the DMZ Server this will almost certainly solve any Router related
problems with Defcon, but does pose a security risk for your computer
as you will not be protected by your Router any longer. |
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| Using Port Forwarding |
Setting
up Port Forwarding can solve most network problems. This applies only
if you connect to the Internet through a hardware Router or NAT
Firewall, and involves setting up your Router to automatically forward
all Defcon related network data direct to the computer running Defcon.
This is the final thing to try when everything else has failed. To do
this:
· In Defcon's "Network Options" panel (main
menu -> options -> network options) set the option "Port
Forwarding" to Enabled, and ensure the port numbers are set to default
ie 5010 and 5011. You can use any port numbers you wish, just ensure
they are fixed.
· Access your admin panel for your Router.
Most Routers have a web interface of some kind, in which you can
configure the network settings.
· The naming conventions are
different for every router, but look for a setting called something
like "Port Forwarding". Sometimes it is called "Services", "Firewall
Rules", "Virtual Servers" or "Inbound Services".
· You need
to create a new port forwarding rule. You need to forward ports 5010
and 5011 UDP (Incoming) to the local IP of your computer. You can find
your local IP by typing "ipconfig" at a command line.
· For
example, a typical setting would be:
Ports 5010 and 5011 UDP,
Incoming -> Forwarded to IP 10.0.0.3.
· Detailed
instructions for specific Routers can be found at www.portforward.com |
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