[pptp-server] PPTP
George Vieira
GeorgeV at citadelcomputer.com.au
Thu Apr 19 01:26:06 CDT 2001
Is your $LOCALHOST containing 127.0.0.1? This won't work and should contains
your external IP address..
Can you give me/us a listing of your
ipchains -L -n -v --linenumbers
thanks,
George Vieira
-----Original Message-----
From: Karan Ingale [mailto:karan_ingale at yahoo.com]
Sent: Thursday, April 19, 2001 4:09 PM
To: pptp-server at lists.schulte.org
Cc: shirish at dishatech.com
Subject: [pptp-server] PPTP
Hello,
I am running Redhat Linux 6.2 on a Pentium machine. I
have applied the Kernel patch for PPTP. I am using
IPChains to filter out specific outgoing and incoming
traffic.
I use a Windows 2000 machine from the internal
network, to make a VPN session with a server on the
internet. If I don't apply any rules for ipchains (All
Accept), I am able to make the connection. But as soon
as I apply the following rules, I am not able to make
a VPN connection with the VPN server on the internet.
This is the policy I used to deny all ports
ipchains --policy input DENY
ipchains --policy output DENY
ipchains --policy forward DENY
This is the policy for PPTP
ipchains --append input \
--jump ACCEPT \
--interface $EXTERNAL_INTERFACE \
--source $EXTERNAL_NETWORK $PPTP \
--destination $LOCALHOST $UNPRIVPORTS \
--protocol tcp
# --protocol tcp ! -y #SYN BIT
Check
ipchains --append output \
--jump ACCEPT \
--interface $EXTERNAL_INTERFACE \
--source $LOCALHOST $UNPRIVPORTS \
--destination $EXTERNAL_NETWORK $PPTP \
--protocol tcp
ipchains --append input \
--jump ACCEPT \
--interface $EXTERNAL_INTERFACE \
--source $EXTERNAL_NETWORK $PPTP \
--destination $LOCALHOST $UNPRIVPORTS \
--protocol udp
ipchains --append output \
--jump ACCEPT \
--interface $EXTERNAL_INTERFACE \
--source $LOCALHOST $UNPRIVPORTS \
--destination $EXTERNAL_NETWORK $PPTP \
--protocol udp
I have similar policies for other ports. They work
just fine.
Can anybody solve my problem?
Thanks.
Karan.
Systems Engineer.
Disha Technologies.
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