BSDI announcement about defense against syn-flooding attacks

Fri Oct 4 00:39:03 UTC 1996

>   The remainder of the patches (K210-021, K210-022, and U210-025)
>   add support for IP source checking, and for reducing and/or
>   eliminating problems associated with SYN attacks, IP fragment
>   attacks, and some other denial of service/looped server attacks.
> 
> Unfortunately, these are available only for BSD/OS 2.1 -- nothing for prior 
> releases.
> 
>  William Sommers

They're working on fixes for prior releases, I believe.
(I have it from the coder's fingers).

Avi