Chanmode

Access levels

These are the modes that grant a certain 'level' to a user.

Channel mode	Module	Description	Restrictions
v	chanmodes/voice	Voice. This makes the user able to speak in +m/+M channels. User can also still speak if banned.	May be set by +hoaq users
h	chanmodes/halfop	Half-Op. Gives some of the usual channel operator rights, but not all. They are basically a light version of channel ops.	May be set by +oaq users
o	chanmodes/chanop	Channel Op. This is the channel operator privilege everyone knows about, allows the user to do almost all administrative tasks in a channel such as /KICK, /MODE, etc..	May be set by +oaq users
a	chanmodes/chanadmin	Channel Admin. A level above channel ops but with no special extra privileges except for one: people below chanadmin (so +h/+o) cannot KICK +a people.	May be set by +q users
q	chanmodes/chanowner	Channel Owner. The highest level. Channel owners can't be kicked by any level below. Usually there's only one person with +q and the mode is set by services.	Normal users can't set this

Note that often Services are used to manage +vhoaq lists in so called "access lists" or AOP/HOP/etc. Consult your services documentation.

Disabling levels

In UnrealIRCd 5 these are built-in modules that cannot be disabled. In UnrealIRCd 6 you can decide not to load a level by using blacklist-module, eg blacklist-module "chanmodes/chanowner"; if you don't want +q.

List modes

These are so called 'list modes'.

Channel mode	Module	Description	Restrictions
b	built-in	Ban. Prevents a user from joining the channel.	Requires +h or higher
e	built-in	Ban exception. When a user is banned (due to +b) and they are on this +e list then they may still join the channel.	Requires +h or higher
I	built-in	Invite exception. When the channel is +i (invite only) then people on this list may still join the channel.	Requires +h or higher

All these modes take a nick!user@host parameter, like: +b *!*@*.isp.com. See also Extended bans for other syntaxes (eg: +e ~channel:@#lobby).

Channel settings

These are channel modes that configure channel settings.

Channel mode	Module	Description	Restrictions
c	chanmodes/nocolor	No color allowed in the channel. Will block ANSI and mIRC color codes.	Requires +o or higher
C	chanmodes/noctcp	No CTCP's allowed in the channel.	Requires +o or higher
D	chanmodes/delayjoin	Delays someone's JOIN message until that person speaks. Chanops and higher, opers and ulines/services are exempt.	Requires +o or higher
d	chanmodes/delayjoin	When unsetting +D, Unreal needs to process all remaining delayed users (i.e. invisible in the channel to regular users) to make them JOIN. +d is an intermediate/temporary mode to facilitate this and will be unset once all users are properly "joined".	Set by server
f	chanmodes/floodprot	Flood protection. This is a highly advanced feature, see channel mode +f.	Requires +o or higher
G	chanmodes/censor	Filter out bad words configured in Badword block	Requires +o or higher
H	chanmodes/history	Turns on Channel History. For more information how to use this see Channel history	Requires +o or higher
i	chanmodes/inviteonly	Invite only. Requires people to be /INVITE'd to the channel or be on the +I (Invite Exceptions) list (for that latter, see the List modes section above)	Requires +o or higher
k	chanmodes/key	Require users to specify a channel key in order to join (/JOIN #chan key). Example: +k secret	Requires +h or higher
K	chanmodes/noknock	/KNOCK command is not allowed.	Requires +o or higher
L	chanmodes/link	Channel link. If the +l user limit (see below) is reached then users will automatically be redirected to this channel. Example: +L #something	Requires +o or higher
l	chanmodes/limit	Limit the amount of users that may be in the channel. If the limit is reached then any new JOIN's are rejected (see also +L above).	Requires +o or higher
m	chanmodes/moderated	Moderated channel. Only people with +v or higher (+vhoaq) may speak.	Requires +h or higher
M	chanmodes/regonlyspeak	Must be authenticated to services or have +v or higher to speak.	Requires +o or higher
N	chanmodes/nonickchange	No nick-changes permitted. Normally not set, only during a a nick-flood flood attack.	Requires +o or higher
n	chanmodes/noexternalmsgs	No external messages. If you don't set +n then users outside the channel may still send messages to it. Thus, almost everyone will set their channel +n.	Requires +h or higher
O	chanmodes/operonly	IRC Operator only channel	IRCOp-only
P	chanmodes/permanent	Permanent channel. After all users leave a channel it is normally destroyed. If you set +P then this won't happen and all settings are preserved. In addition to that, all channel settings (modes, bans, topic, etc.) are saved in a database and restored on startup via the channeldb module.	IRCOp-only
p	chanmodes/private	Private channel. Partially conceals the existence of the channel. Users cannot see this channel name unless they are a member of it. For example, if you WHOIS a user who is on a +p channel, this channel is omitted from the response - unless you are on the same channel. IRC Operators will always see +p channels and its members.	Requires +o or higher
Q	chanmodes/nokick	No /KICK allowed. Can be used to force all chanops to use Services for kicking. Unusual, but possible.	Requires +o or higher
R	chanmodes/regonly	Only registered users may join the channel. Registered users are users authenticated to Services.	Requires +o or higher
r	chanmodes/isregistered	Channel is registered at Services	Set by services
s	chanmodes/secret	Secret channel. Extends the functionality of +p (above), but in addition to this, it will act as if the channel does not exist at all for queries like /TOPIC, /LIST and /NAMES. One exception to this is that it will always respond to the /MODE command. IRC Operators will always see +s channels and its members.	Requires +o or higher
S	chanmodes/stripcolor	Strip color codes. This removes any mIRC or ANSI color codes by converting it to regular text.	Requires +o or higher
T	chanmodes/nonotice	Channel notices are not permitted (/NOTICE #chan hi!). On many clients a beeping sound will happen on notices, hence why this mode is sometimes set.	Requires +o or higher
t	chanmodes/topiclimit	Restricts /TOPIC to +h or higher. Without +t anyone in the channel may set the topic. Most channels are +t.	Requires +h or higher
V	chanmodes/noinvite	/INVITE is not permitted.	Requires +o or higher
z	chanmodes/secureonly	Only clients which are connected through SSL/TLS may join the channel	Requires +o or higher
Z	chanmodes/issecure	Indicates that only people who are using SSL/TLS are on the channel. This channel mode is (only) set by the server when the channel is also +z and everyone on the channel is connected via SSL.	Set by server