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Forum Index :: Ideas and Suggestions :: Basic protection options :: Reply to this topic

Posted :: 1:21pm, Fri, Dec 17, 2004     Subject :: Basic protection options

    When more than X lines are written in Y seconds the bot should set +m automatically.
X and Y should be user-defined.
Also when there more than X parts,joins in Y seconds bot should set +i.
This is more like the job for scripting but it would be nice if the bot could interact with the channel service.
For example when the bot gets banned it should unban itself using channel service. Futhermore it should assume that a takeover may be happening and suspend the user that set the ban.
And the ideea can be stretched to the limits of human imagination.


Posted :: 1:30pm, Fri, Dec 17, 2004

Posts: 165
    My thoughts have been along the way of...
if a flooding rule is triggered by 1 person it checks to see
if there are others, and if so, it sets +mi for say 2 minutes
join/part floods needs some special logic I havent thought
much about yet. X people joining in Y seconds can easily be
triggered by a fluke or a netmerge.

Posted :: 2:01pm, Fri, Dec 17, 2004

    In order to avoid beeing kicked an attacker brings multiple bots (let's say 20). Each may not trigger flood protection but all of them are generating flood.
As for cycle flood, the bot will not check for mass join since this happens frequently on netsplits.
Best way to explain the cycle flood detection method is an example.
Time interval for checking flood will be set by user according to his needs or by the bot (estimating from the number of users in the channel).
Let's say 5 users join a channel of 20 users. If in the same interval more than 75% of them (~4) are leaving, emech will wait to see if 4 or even 3 (75%) users will join the channel again. Now the bot will temporary set +i for 2 minutes let's say.

Posted :: 2:07pm, Fri, Dec 17, 2004

    Sorry , could not find the edit button.
In order to avoing mistaking the cycle flood for netsplit emech should check only for part messages not signoff`s. Or at least to ignore the *.net *.split quit message.

Posted :: 3:39pm, Fri, Dec 17, 2004

Posts: 165
    actually thinking about it a bit now.
its possible that ... when a user leaves for any reason he's
placed in a special list, this list to be kept around 10-20 seconds.
if the number of people on this list exceeds a certain number,
that could be interpreted as a cycle flood.

btw, this forum doesnt have any edit button yet =P


Posted :: 3:53pm, Fri, Dec 17, 2004

    The list ideea is ever better. I was trying to avoid that since it requires more work.
I say it's better because it offers emech the possibility to kickban the 'bad' people (temporary even).
I wish you good luck since you will need spend some free time in order to make this and other features work.

Keep up the good work :)
Thank you

Posted :: 4:03pm, Fri, Dec 17, 2004

Posts: 165
    actually, keeping a list of offenders is pretty damn trivial,
instead of deleting each chanuser record when they part, just
move them to a separate list, and when they time out from that
one, then delete them entirely.

this behind the scenes list can be used to keep track of
offenders even after they are kicked, etc



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