From: "Vladimir V. Kamarzin" <vvk@vvk.pp.ru>
To: ALT Linux sysadmin discuss <sysadmins@lists.altlinux.org>
Subject: Re: [Sysadmins] IDS lists
Date: Thu, 18 Oct 2007 11:22:49 +0600
Message-ID: <m3abqh0zfa.fsf@vvk.distance.ru> (raw)
In-Reply-To: <20071017170500.39b79559@batyrshin.ieml.ru> (Timur Batyrshin's message of "Wed, 17 Oct 2007 17:05:00 +0400")
>>>>> On 17 Oct 2007 at 19:05 "TB" == Timur Batyrshin writes:
>> Пример блокировки ssh от asy@:
>>
>> # cat /etc/net/ifaces/top/fw/iptables/filter/INPUT
>> [...]
>> # ssh restriction
>> -p TCP --syn --dport 22 -s xxx.xxx.xxx.0/28 -j ACCEPT
>> -p TCP --syn --dport 22 -m recent --name ssh_rate_limit --set
>> -p TCP --syn --dport 22 -m recent --name ssh_rate_limit --update
>> --seconds 60 --hitcount 4 -j LOG
>> -p TCP --syn --dport 22 -m recent --name ssh_rate_limit --update
>> --seconds 60 --hitcount 4 -j DROP
TB> А в последнем случае не лучше будет --rcheck вместо --update ?
TB> Иначе каждый syn будет считаться дважды.
Как вы это определили?
--
vvk
Russian Postfix irc: irc.freenode.net #postfix-ru
next prev parent reply other threads:[~2007-10-18 5:22 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-10-10 5:37 Timur Batyrshin
2007-10-10 5:45 ` Anton Gorlov
2007-10-10 5:48 ` Mikhail A. Pokidko
2007-10-10 5:54 ` Avramenko Andrew
2007-10-10 6:14 ` Timur Batyrshin
2007-10-10 6:07 ` Aleksey Avdeev
2007-10-10 6:38 ` Timur Batyrshin
2007-10-10 6:20 ` Avramenko Andrew
2007-10-10 6:39 ` Timur Batyrshin
2007-10-10 5:55 ` Michael Shigorin
2007-10-10 6:23 ` Vladimir V. Kamarzin
2007-10-17 13:05 ` Timur Batyrshin
2007-10-18 5:22 ` Vladimir V. Kamarzin [this message]
2007-10-18 6:46 ` Timur Batyrshin
2007-10-10 6:32 ` Anton Kvashin
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