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The following pages were taken from the Official mIRC.com Website

IRC F.A.Q.

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(41) What is a netsplit? Why does everybody keep signing on and off? What does it mean when I see: ***NickName has quit IRC (*.bu.edu eff.org)?

Netsplits are (unfortunately) a routine part of IRC life. The above message means that NickName, who was on a channel with you, was on a different server from you and this server split off from the part of the net you are on.

A
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B
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C
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D
 
E
   


Lets assume a small IRC network where A, B, C, D and E are servers. Let's say that you are on server D, and server A splits from server B. In this case, you will see all users on the servers B, C and E, "sign off". On large IRC networks and crowded channels you will see a huge amount of people 'quiting IRC'. When A and B rejoin, you will see users from B, C and E "rejoin" the channel you were on.
Note that netsplits are all from the point of view of the user. After a netsplit rejoins people might ask where you went -- because from their perspective, *you* split off. The only thing you can do during a netsplit is wait for the net to merge itself. Changing your server during a netsplit is a Bad Idea, because you are likely to have your nickname collided. A "split" often occurs due to faults in the underlying *physical* network. It can also occur due to other reasons, such as if the machine on which the IRC server runs crashes, or if it is too overloaded to handle connections as happens on bigger nets, or if an IRC operator willfully disrupts the connection between two servers to achieve better routing (server - server connections)
.

(42) What is a Nick Collision Kill?

After a netsplit, a net-join begins and on both halves of the merging network, and people that existed with the same nicknames can be killed. This can happen frequently with popular nicknames. This phenomena is called a Nick Collision. As soon as a Nick Collision is detected (in general) both persons involved will be disconnected (killed) from their IRC servers. Nick Collisions can be caused on purpose by people who just want to harrass others or try to take over their channel. In general, this behavior is considered very abusive and can easily lead to a K-line!

(43) What is a Server-op? ***irc.server.net sets mode: +ooo Nick1 Nick2 Nick3

After a netsplit, during the net-join process, servers on both sides of the split try to update all kinds of information they may have missed. New users, their nicknames, the channels they are on and most of the channel settings are exchanged. The servers involved in the split will also make sure on both sides of the split on all channels the same channel operators are set. This process is called server-opping. Server-ops show like :

***irc.server.net sets mode: +ooo Nick1 Nick2 Nick3

Server-ops are famous for its use in malicious behaviour. People can use net-splits to get operator status on a channel on one side of the split and on the moment of net-join de-op the rightfull channel operators. The Undernet has an improved server-server protocol which prevents server-op abuse as well as channel desynchs and intentional nick collides.

(44) What is an Ident server? Why am I unidentified and why does it matter?

An ident server normally is maintained by the Unix machine of your network provider. It is a kind of nameserver that guarantees your Identity. Since most standalone windows machines are not correctly backed up by an ident service, you sometimes have to run your own ident server. Several windows based ident servers exist but some IRC clients also have such a server built into their code to help you. Examples are WSIRC and mIRC. IRC servers can do perform an Ident request to your Ident server and then expect a standardized repsonse. More and more IRC servers require you to be identified in some way, and they will disconnect you if you are not identified! Also if you don't react, or do so in the wrong way, they can decide to disconnect you. You can check if you're properly identified by doing a /whois on yourself. The first line in the reply should NOT contain a ~ (tilde) before your userid. If you have a ~ in it try activating the Ident server built into your IRC client or use a separate Ident server and restart your IRC client and see if it helps.

(45) What are Channel and User Modes?

Channels can have additional constraints, which can be set by the MODE command. To understand this, recall that the first person that joined a channel effectively creates it and is, at least initially, in charge of the channel. He or she becomes a Channel Operator or chanop or 'op'. He can set constraints to the channel and make other people chanops as his wishes. The command that allows channel operators to change channel modes, or any user to change their personal mode is :

/MODE {channel|nickname} [{+|-}{modechars} [{parameters}]]
A + or - sign determines whether the mode should be added or deleted.

Channels can be moderated, secret, private, with a limited number of users, anonymous, invite-only, topic-limited, with a list of banned users...

/mode {channel} +b {nick|address} ban somebody by nickname or address mask (nick!account@host)
/mode {channel} +i channel is invite-only
/mode {channel} +l {number} channel is limited, with {number} users allowed maximal
/mode {channel} +m channel is moderated, only chanops and others with 'voice' can talk
/mode {channel} +n external /MSGs to channel are not allowed
/mode {channel} +p channel is private
/mode {channel} +s channel is secret
/mode {channel} +t topic limited, only chanops may change it

/mode {channel} +o {nick} makes {nick} a channel operator
/mode {channel} +v {nick} gives {nick} a voice

The MODE command also allows you to modify your personal parameters, your "user mode". You can check your usermode with the command "/MODE {yournick}". Note that user mode +i may be the default on some servers, in order to protect privacy of users. This should not be seen as a problem, since any user can change his/her personal mode from whatever defaults a server may set.

/mode {yournick} +r sets your access to restricted. You cant do a -r mode change !!
/mode {yournick} +i makes yourself invisible to anybody that does not know your nickname
/mode {yournick} +o gives IRC-Operator status, can only be set by IRC-ops with OPER
/mode {yournick} +s lets you receive server notices
/mode {yournick} +w makes you receive wallops; messages to IRC-Ops (abused and deprecated)

(46) What do these Channel and User Modes mean?

A channel is PUBLIC by default. Anyone can notice a public channel, see its users and join the conversation. In a list of channels you can see a public channel's topic. When someone is on a public channel, he can be easily found by all other users as long as his personal user mode is not set to invisible (see below).

An INVITE-ONLY channel can only be joined if you are invited by one of its channel operators.

PRIVATE channels turn up normally in the channels list. People can see you are on a private channel somewhere, but they can never find out on -which- private channel you are unless they search all (private) channels by brute force. With the names command your nickname will not show up, but it will with the /who {channel_name} command unless you hide by setting your personal user mode to 'invisible'.

SECRET channels do not show up in a channels list and you cannot find out its topic unless you join it. If you are on a secret channel, someone who is not on the same channel can't see that you are there, regardless what your personal user mode is set to. Your name does not show up in a names list of people on IRC if you are on secret channels only.

Your user mode can be set to INVISIBLE meaning that other people cannot find you by searching on IRC unless they know your exact nickname. No (wildcarded) search on you by the /who command on your IP Address or real name will deliver your current nickname or other likewise info to others.

When your user mode is restricted you do not have the power normal channel operator have on channels (you cant use /mode, /kick, ..etc.) and you can not change nickname (/nick). But you can chat normally.

(47) What server do you advise me to use?

Try to choose a server that is close to you. As a rule of thumb, servers that are close geographically are also close network-wise (which is what matters) but this rule of thumb is not always true. If in doubt ask some people from the same neighbourhood what servers they use. The larger the distance to the server the larger the chance it refuses you or gives you only restricted access.

All people in need of a list of servers for EFNET, UNDERNET and DALNET and more information follow the following URL's

Undernet Home page

Dalnet Home page

(48) In other IRC FAQ's and help files I see more and sometimes totally diffferent commands and problems explained, how come?

This IRC INTRO file focuses on situations a typical user on a Windows based IRC client may face. This restricion eliminates a lot of hassle (and their solutions) the average IRC user on UNIX has to cope with. In this file you will not find info on the UNIX command "set" (set NOVICE off, set SCROLL_LINES 2) or similar commands since you don't need them in Windows. I'm sure you dont want to be bothered by ' vt100 compatible terminals', 'How to scrollback using special key bindings' and 'UID PID PPID'. Also, all references to .ircrc and similar files are filtered out or where needed replaced by their Windows equivalent.

(49) Where can I get more info?

IRC RFC
The Internet Relay Chat (IRC) Protocol is explained and defined in the Request for Comments (RFC) number 1459 written by the founder of IRC J. Oikarinen and D. Reed. This RFC is available by FTP from cs-ftp.bu.edu or ftp.tohoku.ac.jp.

Start of IRC
Read how IRC was started by Jarkko Oikarinen and what he does nowadays in http://www.mirc.co.uk/help/jarkko.txt and http://www.user-com.undernet.org/promotions/jarkko.html.

IRC FAQ
The IRC Frequently Asked Questions (FAQ) by Helen Trillian Rose provides excellent information on a lot of IRC issues. The IRC FAQ is available by FTP at cs-ftp.bu.edu and ftp.kei.com and in html format on www.kei.com.

Undernet FAQ
The Undernet IRC FAQ consists of 2 parts. The initial version was written by Paul Grant and later versions by Mandar M. Mirashi. The latest version can always be found at :
http://www.nv.us.undernet.org/faq.html

WWW
On the world wide web a lot of additional info can be easily found. Do some simple searches on Yahoo, Altavista or Webcrawler to find tons of info !!
Some usefull links are :
IRChelp.org and Yahoo info.
You can also visit some Windows IRC clients World Wide Web pages to get more info :
WSIRC, mIRC, mIRC, mIRC, Virc.

Usenet
The Usenet alt.irc.* newsgroups provide a lot of information to both newbies and experienced people on IRC. I can highly recommend 'lurking' there for a while!

IRC
On IRC you will find several channels intended to help you with simple as well as more difficult problems. You could give #irchelp, #ircnewbies, #new2irc, #newbies and #wasteland a try. Also most of the popular Windows based IRC clients have their own IRC channel. Check out #mirc, #virc or #pirch. Please don't demand help though; we are all volunteers there.

(50) Credits?

I am fully aware that a lot of the information found in this file can be found in the same or similar form in several other IRC releated FAQ's already. I have tried to combine the best of worlds, by filtering out all UNIX related references and adding Windows specific problems and questions. I hope I was succesful. All information contained in this file is based on the work and time various people invested by answering questions in the Usenet alt.irc newsgroups and in the already existing IRC related FAQ's. I especially want to mention Helen Trillian Rose, Nicolas Pioch and Mandar M. Mirashi for the time and effort they spend on their IRC ambassador job! Of course I am the only one responsible for all omissions and mistakes in this file, but I hide behind the usual disclaimers....

Tjerk Vonck. - [email protected]

.

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