Firewall configuration

Purpose

If you regard the internet as a dangerous place for your computer, you probably use your router to implement a packet filter firewall. Essentially, this means that your router will only let your computer communicate to the destination IP numbers you specify on the ports you specify. Usually there will be a default rule allowing your computer to communicate to any IP number on port 80, since this is required to allow your web browser to view web sites on any IP number.

If you do this, every time you play a new online game, you need to locate the IP numbers and port numbers it requires to be open, otherwise the game will not run.

The Difficulties with Mabinogi

For most online games, the game's official web site will state the ports and IP numbers required. Nexon's Mabinogi site does not seem to do this.

The port numbers and IP numbers may change occasionally. Sometimes there will be an obvious cause, such as a server upgrade or major version release. Sometimes they are inexplicable, though inexplicable changes have been rare since 2011.

Given the above problems, when Mabinogi fails to run correctly, the next step is to check your router's log file to determine what IP numbers your computer was trying to contact when the game failed. Carry out a Whois search for the IP number. If this confirms that Nexon does own the IP number it seems safe to allow that Port/IP combination through your firewall. For the update server entry listed below, Whois identifies the IP number as owned by NTT America. There is no obvious link between Nexon and NTT America, but Nexon does have a history of using an external company to host the bandwidth intensive task of hosting updates.

The required Ports and IP numbers

These are the IP numbers and ports required after the extended maintenance on 4-Jun-2013. (Since this involved a server upgrade it isn't surprising that several of the IP numbers changed.)

The following are listed in the order that they are required by Mabinogi. They are identified by Port number, which seems stable over time, and a guess at the function, which other more technically literate authors may be able to improve on.

• If you use Steam launcher to connect to Mabinogi, see here.
• If you use Nexon launcher to connect to Mabinogi, see below.

Nexon Launcher

Allow access on ports 9777, 5311, 5577, 5575, 7000, 7001.^{what IP(s)?}

Port 11000 - Login & character selection screen

Allow access 35.162.171.43 on destination port 11000

This will give you access to logging in and the character selection screen.

Port 11020-11023 - The game server

• Allow access to 34.218.42.114 on ports 11020-11021 for Channels 1 and 2.
• Allow access to 50.112.234.180 on ports 11022 and 11020 for Channels 3 and 4.
• Allow access to 52.32.149.152 on ports 11021-11022 for Channels 5 and 6.
• Allow access to 52.34.200.191 on ports 11023 and 11020 for Channels 7 and 8.
• Allow access to 52.41.162.90 on ports 11021-11023 for Channels 9, 10, and the Housing Channel.

The game should now function correctly. If you don't enable a channel and try to transfer to it (or to a housing area for the housing channel), the game will freeze with a black screen and you'll need to kill the program via Task Manager.^{needs verification}

Port 8002 - Friends/Guilds List

Allow access to 54.214.176.167 on destination port 8002.

This will allow you to access your Friends List and Guild List as well as chat on those services.

Port ? - Logoff

As of Fantastic Memory, this section is outdated. This section is outdated and may contain contents that are missing or inaccurate.

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