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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



  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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