Re: Information leakage of IP-layer data on LAN

2022-08-22 Thread Alexander Bluhm
On Mon, Aug 22, 2022 at 08:56:32PM +0200, Peter J. Philipp wrote: > On Mon, Aug 22, 2022 at 08:15:13PM +0200, Alexander Bluhm wrote: > > Note that sending an error reply to packets that cannot be processed > > is not uncommon and sometimes required to make the network behave > > smoothly. > > Ahh

Re: Information leakage of IP-layer data on LAN

2022-08-22 Thread Peter J. Philipp
On Mon, Aug 22, 2022 at 08:15:13PM +0200, Alexander Bluhm wrote: > Do you have a "block return" in your pf.conf? Yes. > Does it work differently if you disable pf with pfctl -d? Yes it does. No return packet. > How does your pf.conf filter to such packets? I think it's the default pf.conf, I

Re: Information leakage of IP-layer data on LAN

2022-08-22 Thread Alexander Bluhm
On Mon, Aug 22, 2022 at 06:04:17PM +0200, p...@delphinusdns.org wrote: > >Synopsis:IP Information leakage using MAC address > >Category:system > >Environment: > System : OpenBSD 7.1 > Details : OpenBSD 7.1 (GENERIC.MP) #3: Sun May 15 10:27:01 MDT 2022 >

Information leakage of IP-layer data on LAN

2022-08-22 Thread pjp
>Synopsis: IP Information leakage using MAC address >Category: system >Environment: System : OpenBSD 7.1 Details : OpenBSD 7.1 (GENERIC.MP) #3: Sun May 15 10:27:01 MDT 2022

Re: An old em(4) bug is still present in latest snapshot

2022-08-22 Thread Walter Alejandro Iglesias
On Mon, Aug 22, 2022 at 02:11:10PM +0100, Stuart Henderson wrote: > Try disabling iAMT in bios. > > If that helps it may be possible to workaround if the right places can be > found, see the patch in comment 7 on > https://bugzilla.kernel.org/show_bug.cgi?id=10990 WTF!! What is that ultra

Re: An old em(4) bug is still present in latest snapshot

2022-08-22 Thread Stuart Henderson
Try disabling iAMT in bios. If that helps it may be possible to workaround if the right places can be found, see the patch in comment 7 on https://bugzilla.kernel.org/show_bug.cgi?id=10990 On 2022/08/22 13:17, Walter Alejandro Iglesias wrote: > Hi, > > This bug: > >

An old em(4) bug is still present in latest snapshot

2022-08-22 Thread Walter Alejandro Iglesias
Hi, This bug: https://marc.info/?l=openbsd-bugs=156682947025229 is still present in the latest snapshot. Perhaps that bug report was too noisy. Let's explain the issue again. The machine is a HP dc7700, its ethernet card is a Intel 82566DM Gigabit, listed in em(4) as supported. With