Re: Linux 2.4.27 SECURITY BUG - TCP Local and REMOTE(verified) Denial of Service Attack

Herbert Xu
2004-09-21T02:26:51Z

Florian Weimer <fw@deneb.enyo.de> wrote:
>
>>> TCP-MD5 has no effect on ICMP based attacks.,
>>
>> Hmm, good point. Which attacks, and what could be done about them?
>> (other than IPsec protect all traffic between peers).
>
> You just filter ICMP packets, in the way RST packets are already
> filtered (i.e. rate limit).

Rate-limiting has no effect on ICMP attacks unless your limit is such
that you're effectively dropping them all. But then you get PMTU
problems...
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