From: "Steffen Bisgaard" <sbisgaard@xtrasource.com>
To: netfilter@lists.netfilter.org
Subject: SMTP
Date: Tue, 21 Jan 2003 16:24:36 +0100 [thread overview]
Message-ID: <NEBBICCJKLGJHMMNBPIKGEIJEDAA.sbisgaard@xtrasource.com> (raw)
Hallo all,
Can anybody tell me why the following doesn't allow me to send and receive
email?
# POP server (110)
# ----------------
iptables -A INPUT -i $EXTERNAL_INTERFACE -p tcp \
--source-port $UNPRIVPORTS \
-d $IPADDR --destination-port 110 -j ACCEPT
iptables -A OUTPUT -o $EXTERNAL_INTERFACE -p tcp ! --syn \
-s $IPADDR --source-port 110 \
--destination-port $UNPRIVPORTS -j ACCEPT
# POP client (110)
# ----------------
iptables -A INPUT -i $EXTERNAL_INTERFACE -p tcp ! --syn \
--source-port 110 \
-d $IPADDR --destination-port $UNPRIVPORTS -j ACCEPT
iptables -A OUTPUT -o $EXTERNAL_INTERFACE -p tcp \
-s $IPADDR --source-port $UNPRIVPORTS \
--destination-port 110 -j ACCEPT
# ------------------------------------------------------------------
# SMTP server (25)
# ----------------
iptables -A INPUT -i $EXTERNAL_INTERFACE -p tcp \
--source-port $UNPRIVPORTS \
-d $IPADDR --destination-port 25 -j ACCEPT
iptables -A OUTPUT -o $EXTERNAL_INTERFACE -p tcp ! --syn \
-s $IPADDR --source-port 25 \
--destination-port $UNPRIVPORTS -j ACCEPT
#
#
#
# ------------------------------------------------------------------
# SMTP client (25)
# ----------------
iptables -A INPUT -i $EXTERNAL_INTERFACE -p tcp ! --syn \
--source-port 25 \
-d $IPADDR --destination-port $UNPRIVPORTS -j ACCEPT
iptables -A OUTPUT -o $EXTERNAL_INTERFACE -p tcp \
-s $IPADDR --source-port $UNPRIVPORTS \
--destination-port 25 -j ACCEPT
next reply other threads:[~2003-01-21 15:24 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-01-21 15:24 Steffen Bisgaard [this message]
-- strict thread matches above, loose matches on Subject: below --
2004-05-14 11:17 smtp azeem ahmad
2004-05-14 11:37 ` smtp Gavin Hamill
2004-05-14 12:46 ` smtp Antony Stone
2004-05-14 12:07 smtp azeem ahmad
2004-05-14 12:28 ` smtp Gavin Hamill
2004-05-14 13:19 smtp azeem ahmad
2004-05-14 13:40 ` smtp Gavin Hamill
2004-05-14 15:41 smtp azeem ahmad
2004-05-14 15:53 ` smtp Gavin Hamill
2004-05-14 18:54 smtp azeem ahmad
2004-05-14 19:47 ` smtp Gavin Hamill
2004-05-14 20:11 smtp azeem ahmad
2004-05-14 20:22 ` smtp Alexis
2004-05-14 20:26 ` smtp Gavin Hamill
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