Date: Mon, 10 Feb 1997 10:25:05 +0200 (EET) From: mika ruohotie <bsdisp@shadows.aeon.net> To: sadmin@roundtable.cif.rochester.edu (Security Administrator) Cc: rls@mail.id.net, walth@scanners.tec.mn.us, slaterm@excel.tnet.com.au, questions@freebsd.org, isp@freebsd.org, security@freebsd.org Subject: Re: Problems? or denial of service attack? Message-ID: <199702100825.KAA26392@shadows.aeon.net> In-Reply-To: <199702082055.PAA21546@roundtable.cif.rochester.edu> from Security Administrator at "Feb 8, 97 03:55:41 pm"
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> > I don't build a machine with less than 128MB of swap, 43 is nothing, > We've got a machine with 128 Megs of on-board RAM. We STILL decided to > install twice the amount of cache (256 megs) split between two disks hmm... a while ago i fired up a machine with 128 megs ram and 4 scsi disks, each carrying 128 megs swap, total 512 megs swap. and when i will be adding more drives i will put those into the swap chain too... there's never "too much" swap i guess, specially since the drives comes cheapo. also i wonder the general filesystem setup the person has in his server, even though this might be slightly off topic, and basic knowledge, i think it doesnt hurt to say it out loud. =) i trust you isp people run your /var/mail on separate filesystem, right? (even going for several filesystems between clients is not too paranoid) the first thing an isp has to consider is someone attacking with denial of service attempts. and general question, how much mail space would be the "good" amount per customer? one/two/three megs? (assuming client doesnt save email on the server side) should the quota include mail space? should i restrict the mail size? i personally would quota, and give one meg max. mickey -- mika ruohotie super systems, finland net/sys admin mickey@supsys.fi mika@aeon.net
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