From: "Alexey Shabalin" <a.shabalin@gmail.com>
To: "ALT Linux sysadmin discuss" <sysadmins@lists.altlinux.org>
Subject: Re: [Sysadmins] iptables и ftp --- фича или баг?
Date: Thu, 20 Nov 2008 01:47:28 +0300
Message-ID: <b966c1e40811191447w6a26ea5ep417b71ec998f8633@mail.gmail.com> (raw)
In-Reply-To: <49246D59.9070802@rambler.ru>
2008/11/19 Kharitonov A. Dmitry :
> [user@SERVER ~]$ sudo lsmod | egrep "ftp|ipt"
> ipt_MASQUERADE 7808 1
> ipt_REJECT 9472 705
> iptable_mangle 7040 0
> iptable_nat 11652 1
> iptable_filter 7168 1
> ip_tables 17604 3 iptable_mangle,iptable_nat,iptable_filter
> ipt_REDIRECT 6272 0
> ipt_LOG 10496 0
> x_tables 18180 8
> xt_state,xt_tcpudp,ipt_MASQUERADE,ipt_REJECT,iptable_nat,ip_tables,ipt_REDIRECT,ipt_LOG
> ip_nat_ftp 7680 0
> ip_nat 22060 4
> ipt_MASQUERADE,iptable_nat,ipt_REDIRECT,ip_nat_ftp
> ip_conntrack_ftp 12016 1 ip_nat_ftp
> ip_conntrack 56800 6
> xt_state,ipt_MASQUERADE,iptable_nat,ip_nat_ftp,ip_nat,ip_conntrack_ftp
>
> делаю
> -A INPUT -i wan -p tcp -m tcp --sport 20 ! --tcp-flags FIN,SYN,RST,ACK SYN
> -m state --state RELATED,ESTABLISHED -j ACCEPT
> -A INPUT -i wan -p tcp -m tcp --sport 21 ! --tcp-flags FIN,SYN,RST,ACK SYN
> -m state --state RELATED,ESTABLISHED -j ACCEPT
> -A OUTPUT -o wan -p tcp -m tcp --dport 20 -m state --state
> NEW,RELATED,ESTABLISHED -j ACCEPT
> -A OUTPUT -o wan -p tcp -m tcp --dport 21 -m state --state
> NEW,RELATED,ESTABLISHED -j ACCEPT
>
> запускаю firefox
> ERROR
> The requested URL could not be retrieved
>
> An FTP protocol error occurred while trying to retrieve the URL:
> ftp://ftp.altlinux.org/pub/distributions/
> <ftp://ftp.altlinux.org/pub/distributions/OpenMusic/>
>
> Squid sent the following FTP command:*
> *NLST
> **and then received this reply*
> *Use PORT or PASV first.
> Your cache administrator is webmaster <mailto:webmaster>.
> Generated Wed, 19 Nov 2008 23:35:09 GMT by server.dimahost
> (squid/2.6.STABLE13)
>
> делаю
> -A INPUT -i wan -p tcp -m tcp --sport 20 ! --tcp-flags FIN,SYN,RST,ACK SYN
> -m state --state RELATED,ESTABLISHED -j ACCEPT
> -A INPUT -i wan -p tcp -m tcp --sport 21 ! --tcp-flags FIN,SYN,RST,ACK SYN
> -m state --state RELATED,ESTABLISHED -j ACCEPT
> -A INPUT -i wan -p tcp -m tcp --sport 1024:65535 ! --tcp-flags
> FIN,SYN,RST,ACK SYN -m state --state RELATED,ESTABLISHED -j ACCEPT
> -A OUTPUT -o wan -p tcp -m tcp --dport 20 -m state --state
> NEW,RELATED,ESTABLISHED -j ACCEPT
> -A OUTPUT -o wan -p tcp -m tcp --dport 21 -m state --state
> NEW,RELATED,ESTABLISHED -j ACCEPT
> -A OUTPUT -o wan -p tcp -m tcp --dport 1024:65535 -m state --state
> NEW,RELATED,ESTABLISHED -j ACCEPT
>
> запускаю firefox
> Всё нормально.
>
> Я, так понимаю, не работают
> ip_nat_ftp 7680 0
> ip_conntrack_ftp 12016 1 ip_nat_ftp
>
>
> Кто мне разъеснит: это фича или баг?
это пасивный режим работы ftp.
--
Alexey Shabalin
next prev parent reply other threads:[~2008-11-19 22:47 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-11-19 19:47 Kharitonov A. Dmitry
2008-11-19 22:47 ` Alexey Shabalin [this message]
2008-11-20 5:42 ` Kharitonov A. Dmitry
2008-11-20 5:34 ` Kharitonov A. Dmitry
2008-11-20 6:38 ` "ЗАО \"Уралэнерго-Союз\" / Бережко Иван"
2008-11-21 16:15 ` Kharitonov A. Dmitry
2008-11-22 15:27 ` Kharitonov A. Dmitry
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