From: Pavel <p2n@ya.ru> To: sysadmins@lists.altlinux.org Subject: Re: [Sysadmins] iptables и цель ROUTE Date: Mon, 11 Aug 2008 09:20:32 +0500 Message-ID: <g7oekq$fde$1@ger.gmane.org> (raw) In-Reply-To: <489EFCF4.6090206@rambler.ru> >> ping одна из таких - raw-сокет для отправки ICMP-пакета echo request >> может создать только root (кратковременная процедура), а принять echo >> reply (долговременная процедура - ее и видно в выводе ps) можно и с >> пониженными привилегиями. > Т.е. пакеты она должна посылать уже из-под обычного пользователя, так? Насколько я понял, и создание и отправка ICMP может происходить только от root'а. А если посмотреть так: > # iptables -t mangle -A OUTPUT -p icmp -m owner --uid-owner user -j MARK --set-mark 0xA > # iptables -t mangle -A OUTPUT -p icmp -m owner --uid-owner root -j MARK --set-mark 0xB > > # iptables -t mangle -L OUTPUT -vn >> Chain OUTPUT (policy ACCEPT 149K packets, 53M bytes) >> pkts bytes target prot >> 0 0 MARK icmp OWNER UID match 500 MARK set 0xa >> 0 0 MARK icmp OWNER UID match 0 MARK set 0xb > > $ ping -c 3 ya.ru > > # iptables -t mangle -L OUTPUT -vn >> Chain OUTPUT (policy ACCEPT 149K packets, 53M bytes) >> pkts bytes target prot >> 0 0 MARK icmp OWNER UID match 500 MARK set 0xa >> 3 252 MARK icmp OWNER UID match 0 MARK set 0xb Это не может дать однозначного ответа? -- Best regards, Pavel email/xmpp: p2n-at-ya-dot-ru
next prev parent reply other threads:[~2008-08-11 4:20 UTC|newest] Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top 2008-08-05 10:11 Olvin 2008-08-05 10:36 ` Serge 2008-08-05 11:08 ` Olvin 2008-08-05 12:04 ` Serge 2008-08-05 12:20 ` Olvin 2008-08-05 13:40 ` Alexander Vasiliev 2008-08-05 14:47 ` Olvin 2008-08-06 7:44 ` Pavel 2008-08-07 16:08 ` Olvin 2008-08-08 7:30 ` Pavel 2008-08-08 21:15 ` Olvin 2008-08-08 21:28 ` Yuri Bushmelev 2008-08-08 22:00 ` Olvin 2008-08-10 12:18 ` Pavel 2008-08-10 14:36 ` Olvin 2008-08-11 4:20 ` Pavel [this message] 2008-08-10 12:39 ` Pavel 2008-08-10 14:40 ` Olvin 2008-08-11 6:33 ` Pavel 2008-08-05 12:16 ` Alexander Vasiliev 2008-08-05 13:31 ` Olvin
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