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| 4 | <TITLE> [IRCServices] known services &quot;abuse&quot;? | |
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| 14 | <H1>[IRCServices] known services &quot;abuse&quot;?</H1> | |
| 15 | <B>Samuel Graenacher</B> | |
| 16 | <A HREF="mailto:ircservices%40ircservices.za.net?Subject=%5BIRCServices%5D%20known%20services%20%26quot%3Babuse%26quot%3B%3F&In-Reply-To=39e00e10.35263%40dragonfire.net" | |
| 17 | TITLE="[IRCServices] known services &quot;abuse&quot;?">sam at breakfree.com | |
| 18 | </A><BR> | |
| 19 | <I>Sun Oct 8 02:44:51 PDT 2000</I> | |
| 20 | <P><UL> | |
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| 32 | <HR> | |
| 33 | <!--beginarticle--> | |
| 34 | <PRE>Well we narrowed down the problem to them having *!*@* on their akick | |
| 35 | list, doing an akick enforce and then chanserv trying to set modes in | |
| 36 | the empty channel. | |
| 37 | [Oct 07 14:40:02 2000] debug: AKICK ENFORCE requested for #rena by AM-[mentalbreakdown] | |
| 38 | [Oct 07 14:40:03 2000] channel: MODE +b *!*@* for nonexistent channel #rena | |
| 39 | ||
| 40 | ||
| 41 | _______________________________ | |
| 42 | [Sam](mailto:<A HREF="http://www.ircservices.za.net/mailman/listinfo/ircservices">sam at breakfree.com</A>) | |
| 43 | ||
| 44 | * Linux is like living in a teepee. No Windows, no Gates, Apache in house. * | |
| 45 | ||
| 46 | public pgp key: finger <A HREF="http://www.ircservices.za.net/mailman/listinfo/ircservices">sam at breakfree.com</A> | |
| 47 | or <A HREF="<A HREF="http://www.xploded.net/fingerp.phtml"">http://www.xploded.net/fingerp.phtml"</A>><A HREF="http://www.xploded.net/fingerp.phtml</A">http://www.xploded.net/fingerp.phtml</A</A>> | |
| 48 | ||
| 49 | --- | |
| 50 | original message: | |
| 51 | AC> Replying to two messages at once: | |
| 52 | ||
| 53 | >><i>Hey, | |
| 54 | </I>>><i>lately I've noticed this error message coming up quite often: | |
| 55 | </I>>><i> | |
| 56 | </I>>><i>Global -- from services.mircx.com: | |
| 57 | </I>>><i>Warning: unable to set modes on channel #rena. Are your servers' U:lines configured correctly? | |
| 58 | </I>>><i> | |
| 59 | </I>>><i>The channel is known to have script-kiddies in it and when I started | |
| 60 | </I>>><i>investigating about that a bit I heard they found a way to "abuse" the | |
| 61 | </I>>><i>servs, most likely Chanserv. | |
| 62 | </I> | |
| 63 | AC> I suspect what's happening is that someone is deliberately changing | |
| 64 | AC> channel modes against a modelock. The U-line error detection code works | |
| 65 | AC> by checking the number of times a MODE message is received for a given | |
| 66 | AC> channel in a given period of time; if it exceeds a built-in limit (I | |
| 67 | AC> think it's three messages in one second), the code assumes that the | |
| 68 | AC> server is cancelling its mode changes and displays the U-line error | |
| 69 | AC> message. The code does check that the mode sender has a period in their | |
| 70 | AC> nickname, though; does your server allow nicknames with periods in them? | |
| 71 | AC> If so, it's in violation of the RFC and should be fixed; if not, I'd be | |
| 72 | AC> interested in seeing a debug log of this problem happening. | |
| 73 | ||
| 74 | >><i>A problem I have had with relation to Operserv and Chanserv. | |
| 75 | </I>>><i>Chanserv can op a user on a channel but OperServ can't op the same person. | |
| 76 | </I>>><i>Operserv complains about ulines not being configured correctly. | |
| 77 | </I>AC> [...] | |
| 78 | >><i>For whatever reason, it has now stopped giving this error. I can't help | |
| 79 | </I>>><i>much as to why it started working all of a sudden, but the only thing that | |
| 80 | </I>>><i>comes to mind is that the system was rebooted, though i doubt this is | |
| 81 | </I>>><i>related. Restarting services or the ircd had no effect whatsoever. | |
| 82 | </I> | |
| 83 | AC> This can happen if at some time in the past Services determined that | |
| 84 | AC> mode setting didn't work (as above). Actually, OP/DEOP shouldn't work | |
| 85 | AC> then either; that's a bug. Restarting Services ought to fix it, | |
| 86 | AC> unless/until Services has a problem setting modes again. | |
| 87 | ||
| 88 | AC> --Andrew Church | |
| 89 | AC> <A HREF="http://www.ircservices.za.net/mailman/listinfo/ircservices">achurch at dragonfire.net</A> | |
| 90 | AC> <A HREF="<A HREF="http://achurch.dragonfire.net/"">http://achurch.dragonfire.net/"</A>><A HREF="http://achurch.dragonfire.net/</A">http://achurch.dragonfire.net/</A</A>> | |
| 91 | ||
| 92 | AC> --------------------------------------------------------------- | |
| 93 | AC> To unsubscribe, send email to <A HREF="http://www.ircservices.za.net/mailman/listinfo/ircservices">majordomo at ender.shadowfire.org</A> | |
| 94 | AC> with "unsubscribe ircservices" in the body, without the quotes. | |
| 95 | ||
| 96 | ||
| 97 | ||
| 98 | --------------------------------------------------------------- | |
| 99 | To unsubscribe, send email to <A HREF="http://www.ircservices.za.net/mailman/listinfo/ircservices">majordomo at ender.shadowfire.org</A> | |
| 100 | with "unsubscribe ircservices" in the body, without the quotes. | |
| 101 | ||
| 102 | ||
| 103 | </PRE> | |
| 104 | ||
| 105 | <!--endarticle--> | |
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