Yes, although ipsec wouldn't work in this situation because OP needs to drop packets with an invalid size.

----- Original Message ----- From: "Dominik Friedrichs" <[email protected]> To: "Half-Life dedicated Win32 server mailing list" <[email protected]>
Sent: Saturday, August 31, 2013 9:52 AM
Subject: Re: [hlds] Steam Server Ports


Lets not forget the IPSec policies that can be used to drop packets depending on IP/port/protocol. Its capabilities are very limited (no rules for packet size, data content or fancy stuff like that) but at least you can automate it using Netsh (as I did) to be able to blacklist certain source IPs once they trigger some kind of detection.

On 2013/08/31 14:56, Mart-Jan Reeuwijk wrote:

lol, you cannot "configure" Windows networking to drop/select packets to
a already open port. All windows has is the Windows firewall, which is
crap at best, after all it had to be NSA approved...

And I agree, so far haven't found a firewall on windows platform that
did what I wanted it to do.


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