Hi , I was reading this on a site about host masking just thought to share if that helps out? Reference site is mention at the end. What is Hostmask? A hostmask is how scripts, bans, ignores, and some bots, determine someone's identity on IRC. Everyone who logs onto IRC has a nickname, a UserID (or `ident'), and a host. If you are on a Unix system, your UserID is likely your login name. On a Windows machine, you likely are able to set your UserID yourself. Components Your nickname is the main identifier used on IRC, but you can change nicks easily during your session, thus, it is a poor identifier. Likewise, because Windows users often set their own UserID, it is only a semi-reliable identifier. Your host is the Internet IP address or hostname you are connecting from. Most people can only change it by logging in with a different ISP. It is a strong identifier, although parts of it may change every time you log in, and a group of people share the same domain name. The nickname, UserID, and host are often represented as: nickname!UserID@Host You are probably familiar with the format `userid@host' for e-mail addresses. Although usually a host on IRC is not exactly the same as a person's e-mail address, the concept is similar. To get a mask, simply take thenickname!UserID@Host string, and replace the parts which you expect may change with wild cards. Two wild cards, “*” (asterisk) and ”?” (question mark) are understood. The “*” means “match any number of characters”, and the ”?” means “match exactly one character.” Masks in practice For example, my user@host string is Krobar!krobar@kro.bar, but if I added myself to the userlist that way and I didn't use the nickname Krobar one day, I wouldn't be recognized. On the flip side, if I added myself as *!*@*, then everyone would match. A typical mask is *!*UserID@*.Host This way any nickname used, from any machine in the domain is matched. The * in front of a UserID is usually a good idea, because some servers will add a ~ in front if identd (a nameserver of sorts) isn't working or is too slow. I typically add myself as *!*krobar@kro.bar IP Addresses Sometimes when DNS is slow or broken, someone might show up with only their IP address as a host. In this case, it's the end that changes, so a mask like this might be what you want: *!*UserID@Host.* My mask, in this case would be: *!*krobar@128.193.14?.* Note the use of ”?” in the IP portion. Sometimes my IPis 128.193.141.* and sometimes its 128.193.142.*. Adding a ? ensures I will be recognized, but without too much chance of accidentally recognizing someone else. EXAMPLES: To match everyone with a .br country ending: *!*@*.br To match everyone with nick “warez”: warez!*@* To match your friend John (John!jdoe@d-32.alaska.dialamerica.com): *!*jdoe@*.alaska.dialamerica.com When John complains that he's not recognized when he dials in from Florida: *!*jdoe@*.dialamerica.com To match John when his IP shows up instead: *!*jdoe@132.31.206.* To match people with the tell-tale “typehere” userid: *!*typehere@* PFB , Reference site http://www.afternet.org/help/irc/hostmasks Regards Jazzzzz On 19-Jul-2013, at 1:00 PM, "Holbrook Bunting" <holbrook@DAL.NET> wrote:
(If any of you got this twice, apologies, sent it from the wrong address the first go) So, the idea of user hostmasking was brought up on the dalnet-src@ mailing list a few weeks ago and since we already have the ability in bahamut (via SVSHOST) to have services change a usershostname at anytime, I am thinking why not do this on a global scale? efnet (and others using the same ircd) have the ability to give specific users their own custom host,on a server level, like handing out I:lines. We already have infrastructure setup for management of things in different areas via services (nickname/channel ownership, akill, etc). On a small network I had running, I built into my services a way to allow users to set a "custom" hostname into NickServ done on the nick level, which worked a little like the /ns set url - command. To create a new host for nick xyz (whilst using that nick), I would use; /ns set host some.random.hostname. To turn off that option: /ns set host - To minimise potential abuse, a list of hostmasks would say no you can't set your hostname to havethe word "dalnet" or "staff" or "*.dal.net" in it. If the user tried to set their host to be the same as another users host or ip, it would deny the request. Finally, once a hostname was set, services would not allow them to change the hostname for that nick again for 1 week (unless it was to turn it off). For any other potential abuse problems that someone might cause, there was a kill switch which a CSOp could use to disallow the user from setting a custom host (kinda like freeze), remove any existing host already set. This automated system looked beneficial in that any user could create their own unique hostname without having a bureaucratic system of having a specific team of opers having to grant or deny any request on a one-by-one basis. So, with my system, when does services issue the SVSHOST command (aside from when using /ns set host)? The answer is it would happen when they /identify to their nickname (or another nickname that they aren't currently using) with a separate NOHOST option at the end for if they don't want the host applied at that time. Does a system like this sound of interest to anyone? Does anyone think something like that would be too open for potential abuse? Does anyone have any differing views on how to best setup a user hostmasking system for the network? Thanks,Holbrook aka zort aka srd _______________________________________________ DALnet-src mailing list DALnet-src@lists.dal.net https://lists.dal.net/mailman/listinfo/dalnet-src
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