From: Amodeus <amodeus@pisem.net>
To: community@altlinux.ru
Subject: Re: [Comm] Закрыть порт снаружи
Date: Wed, 2 Apr 2003 14:25:43 +0400
Message-ID: <200304021425.49623.amodeus@pisem.net> (raw)
In-Reply-To: <20030402093702.GA14842@abr.tool.ru>
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В сообщении от 2 Апрель 2003 13:37 Andrey Brindeew написал:
> Как закрыть 53-й порт снаружи в iptables? Мне не удалось
> повесить pdnsd на два интерфейса (127.0.0.1 и 192.168.1.1),
> получается либо только на один интерфейс, либо на все.
>
> Вот что выводит sudo ipchains --list :
>
> Chain INPUT (policy ACCEPT)
> target prot opt source destination
> ACCEPT udp -- anywhere anywhere
> udp spt:bootpc dpt:bootps ACCEPT tcp -- anywhere
> anywhere tcp spt:bootpc dpt:bootps ACCEPT
> udp -- anywhere anywhere udp
> spt:bootps dpt:bootpc ACCEPT tcp -- anywhere
> anywhere tcp spt:bootps dpt:bootpc ACCEPT udp
> -- anywhere anywhere udp dpt:domain
> ACCEPT tcp -- anywhere anywhere
> tcp dpt:domain
>
> Chain FORWARD (policy ACCEPT)
> target prot opt source destination
> ACCEPT all -- 192.168.1.0/24 anywhere
>
> Chain OUTPUT (policy ACCEPT)
> target prot opt source destination
>
> Какое правило необходимо создать для того, чтобы 53 порт с
> интерфейса ppp0 не был виден?
#iptables -A INPUT -p 'tcp' -i ppp0 --destination-port 53 -j
REJECT
#iptables -A INPUT -p 'udp' -i ppp0 --destination-port 22 -j
REJECT
Так как DNS подразумевает откытыми 53 порты и TCP и UDP, то
приходится закрывать их оба!
У меня великолепно работает!
- --
Amodeus
Saratov Linux User Group
amodeus@pisem.net
http://saratov.lug.ru
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next prev parent reply other threads:[~2003-04-02 10:25 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-04-02 9:37 Andrey Brindeew
2003-04-02 10:10 ` [Comm] " Artem K. Jouravsky
2003-04-02 11:21 ` Andrey Brindeew
2003-04-02 11:45 ` Artem K. Jouravsky
2003-04-02 12:54 ` Amodeus
2003-04-02 10:25 ` Amodeus [this message]
2003-04-02 11:37 ` Andrey Brindeew
2003-04-02 12:56 ` Amodeus
2003-04-02 17:49 ` Alexey Tourbin
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