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Hack 97 Set Up Your Own beware ircd Server

If you want a quick and easy IRC server,
install and run the beware ircd IRC server on Windows.

beware
ircd is a small, powerful IRC server for
Windows and Linux. It is very easy to set up, yet it is as powerful
as the ircds developed by large networks (such as
ircu, developed by Undernet).

15.4.1 Downloading beware ircd

Windows
and Linux
versions can be downloaded from http://www.bircd.org or http://www.xs4all.nl/~beware3/irc. When you
have the ZIP file, decompress it (Windows XP can do this, or you can
use a third-party program such as WinZip) to a folder such as
c:\bircd\. Figure 15-3 shows
bircd being extracted with WinZip.

Figure 15-3. Unzipping bircd

Now browse to the directory and open
bircd.ini
in
a text editor. This contains settings that enable or disable features
of the server (similar to F:
linesemployed by other servers). Some common
settings you may wish to change are:

ChannelMode

These modes are automatically set when a user joins a new channel.

ListSecretChannels

If this is set to 1, IRCops can see secret channels by typing
/list S.

MaxBans

This is the maximum number of bans that can be set on each channel.

MaxJoins

Users are allowed to join only this many channels.

MaxNick

Any nickname that is longer than this setting will be truncated
(i.e., the maximum nickname length is equal to
MaxNick).

NetworkName

When a user connects to the server, it will announce this as the name
of the IRC network.

NoDie and NoRestart

Setting these to 1 disables the die and restart commands,
respectively.

GlobalOperFailed

This sends a notice to all IRCops if someone attempts to become an
IRCop by using the /oper command and fails.

OperGline

This allows IRCops to set g-lines (server/network bans). If it is set
to 1, operators can set local g-lines; if set to 2, they can set
global g-lines.

HalfOp

This enables the half-op (+h) mode.
HalfOp gives a user some rights that a channel
operator has, but not as many.

HeadInSand

These settings hide information from users, such as server names in
/whois, g-line reasons, and the
/map and /links commands. These
generally make the network harder to attack.

QnetModes

This enables modes used on Quakenet that block CTCPs, colors, channel
notices, and part/quit reasons.

When you have finished editing bircd.ini, save
it, and open ircd.conf. This file contains a set
of lines. The first letter denotes each line,
and colons separate the parameters. The
ircd.conf file is the same for most of the
available IRC servers. Because of this, numerous web sitessuch
as http://www.irc.org/tech_docs/ircnet/INSTALL-4lexplain
how to use it.

15.4.2 O:Lines

The final settings that need to be
changed before you can get your IRC server fully running are the
O:Lines. These control who can use the /oper
command to become an IRC operator. Such users can
"kill" other users (disconnect them
from the server) and even ban them from reconnecting. If you have the
settings enabled in bircd.ini, they could even
restart or stop the server.

The format of an O:Line is as follows:

O:Host:Password:Nickname::Class

The Host parameter specifies which host
the user must be using in order to execute the
/oper command successfully. It takes the format of
ident@hostname, and you can use wildcards
(*) to match parts of it. Valid examples are:

 *@192.168.* - Matches anyone connecting via a LAN
MD87@* - Matches anyone with the ident 'MD87'
MD87@192.168.* - Matches anyone with the ident 'MD87' connecting via a LAN

The fewer wildcards used, the better. It is possible to specify
*@* for the host, but this is very
insecureanyone who can guess your ID and password could then
use it.

The Password parameter tells
beware ircd the password that must be used when
the authorized user executes the /oper command.
This can be plain text, or it can be encrypted using the
mkpasswd program that comes with
beware ircd.

The Nickname argument tells the ircd what
the user's ID will be. This must be sent as the
first parameter of the command. If
Nickname is set to foo
and Password is set to
bar, the user can become an IRC operator by
typing:

/oper foo bar

The Class defines which class the new IRC
operator will belong to. By default, this is 10, which is the same as
the client class, except with a higher sendQ.
The sendQ determines how much data can be queued for the user before
he is kicked from the server. In most circumstances, there is no need
to change the class.

A completed O:Line will look something like this:

O:MD87@192.168.0.2:foobar:MD87::10

This will allow anyone connecting from 192.168.0.2 with the ident
"MD87" to execute the
/oper command with the ID
"MD87" and password
"foobar".

Examples for most of the available settings in
ircd.conf can be found in the
example.conf file, which is distributed with
beware ircd.

15.4.3 Running beware ircd

When
you have
configured beware ircd, you can start it by
browsing to the folder you extracted it to and running the
bircd.exe file. The server should now start
running.

To connect to the server from the same computer that beware
ircd is running on, open your IRC client and connect to
127.0.0.1. To connect to it from a different computer or to allow
other users to connect, you need to find out the
computer's IP address or hostname. If you
aren't sure what this is, web sites such as
http://www.whatismyip.com will
tell you. Note that if you have a firewall or router, you will need
to forward port 6667 to the computer that is running the
server.

Chris Smith