Gaming Over Hamachi.txt

Hamachi:Gaming over Hamachi
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[edit] Overview

Hamachi can be used to connect you and friends together for gaming. Since every game does it's networking a little differently, some may work "right out of the box" and some may take a bit of tweaking.
[edit] Detail

Follow these steps as a general guideline for ensuring gaming works.

   1. Once you and your friend have Hamachi set up, ensure you can both ping each other, and chat with each other. If either of these don't work, stop and ensure you've configured your firewall properly.
   2. Some games are not intelligent when it comes to having more than one network adapter, and you may need to re-prioritize your network adapter order. Go into Network Connections > Advanced > Advanced Settings > and put the Hamachi adapter at the top of the list.
   3. At this point, see if your game works. If not, check out our game specific articles 

[edit] Troubleshooting

Disabling your firewall is not an effective solution and will not fix your issue.

By far the most common reason games don't work is due to an improperly configured routing table. Windows manages this on it's own, but it not efficient at it when it comes to broadcast routes on multiple network adapters.

   1. Run "route print" was used from command prompt
   2. Make sure that the Hamachi network adapter has a default gateway of 5.0.0.1. If not add it under TCP/IP (v4) settings for the Hamachi Adapter. Go into the adapter's Properties > TCP/IP(v4) Properties > Advanced > new gateway of 5.0.0.1 with a metric of 1500.
   3. Make sure you have a broadcast route (255.255.255.255) going out through your Hamachi IP. If you don't, flush your routing table with "route -f" at the command prompt and reboot. Recheck your newly created routing table via "route print" after rebooting. Recheck routes and ensure the broadcast route is there.
   4. Some firewalls blindly block broadcast packets (255.255.255.255). If your firewall allows you to configure rules based on the interface, put 255.255.255.255 into a trusted zone on the Hamachi interface.
   5. Another tip for firewalls would be to put the 5.0.0.0 network (or 5.0.0.1 - 5.254.254.254 range) into the trusted zone of your firewall. Do this if you know and trust the people connecting to you, otherwise add their Hamachi IPs manually.