Date: Fri, 17 Jun 2022 11:13:03 +0000 From: bugzilla-noreply@freebsd.org To: bugs@FreeBSD.org Subject: [Bug 253912] [PATCH] Inefficient lookup of incoming packets in libalias Message-ID: <bug-253912-227-9OaPF4bzd5@https.bugs.freebsd.org/bugzilla/> In-Reply-To: <bug-253912-227@https.bugs.freebsd.org/bugzilla/> References: <bug-253912-227@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D253912 --- Comment #1 from Lukas Turek <8an@praha12.net> --- Even though libalias database was mostly rewriten, this bug is still presen= t in 13.1. The problem wasn't in the data structure itself (hash table or splay tree), but in the key used for lookup. If the key contains only alias addre= ss and port, all packets from many addresses in DDoS targeting the same local address and port will collide in a single entry. I made a new patch working= in a similar way to the previous one. I did some simple tests, but we haven't deployed it in production yet. --=20 You are receiving this mail because: You are the assignee for the bug.=
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