Date: Sun, 13 Dec 1998 16:21:55 +0800 (WST) From: Dean Hollister <dean@odyssey.apana.org.au> To: Rowan Crowe <rowan@sensation.net.au> Cc: freebsd-isp@FreeBSD.ORG Subject: Re: sendmail morons Message-ID: <Pine.BSF.4.05.9812131620110.15434-100000@odyssey.apana.org.au> In-Reply-To: <Pine.BSF.4.01.9812131835450.4706-100000@velvet.sensation.net.au>
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On Sun, 13 Dec 1998, Rowan Crowe wrote: > Note that I specified "machine performance issue". I'd rather have my > server have an absolute known limit where it no longer accepts new > connections rather than a steady decline as more and more sendmail > processes appear with each new connection. Seeing a machine run out of > swap space is not fun. ;\ If you're worried about performance, then limit the number of connections right down to 10-20. > This absolute limit could also be of use in something like a SYN flood > attack. (Note that limiting to 30 is probably _way_ too low, that's just > something I've started with. Still experimenting). I disagree with your suggestion that 30 is too low. If anything, 30 is too high. > Also, adding in IPs requires periodic review of the database by a human. You can block by class-c, btw, not just single ips. Regards, d. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-isp" in the body of the message
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