[EXIM] Restricting connections from a single IP address

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Lähettäjä: Nigel Metheringham
Päiväys:  
Vastaanottaja: Philip Hazel
Kopio: exim-users
Aihe: [EXIM] Restricting connections from a single IP address
We have recently hit problems with someone doing a denial of service on
our servers by opening a few hundred simultaneous connections to our boxes.

I'm considering the idea of having a mechanism for enforcing a maximum
number of connections from a specific IP, however this feels like a
significant change to exim (keeping per connection state in the central
daemon, mopping up when children die etc).

Any comments?

    Nigel.
-- 
[ Nigel.Metheringham@???   -  Systems Software Engineer ]
[ Tel : +44 113 207 6112                   Fax : +44 113 234 6065 ]
[      Real life is but a pale imitation of a Dilbert strip       ]




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