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i am receiving massive amount of bogus connections from and their DSL subscribers. what is the best way to deal with it? contact their abuse email?

i cannot block the IPs. there are way too many different ones. how is it possible to do such an attack?

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Can you block their entire netblock? – joeqwerty Oct 27 '09 at 23:19

if found the solution for TTNET blocks the whole ISP


and then just repeat that for these
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There're too many duplicate/unneeded lines. Use a CIDR calculator to shorten the number of lines by an order magnitude. For example,, already cover subsequent lines. 78.160.* could be handled by etc. – Gleb Oct 28 '09 at 0:19

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