[NETFILTER]: Add new PPTP conntrack and NAT helper

This new "version 3" PPTP conntrack/nat helper is finally ready for
mainline inclusion.  Special thanks to lots of last-minute bugfixing
by Patric McHardy.

Signed-off-by: Harald Welte <laforge@netfilter.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 22 insertions, 0 deletions

diff --git a/net/ipv4/netfilter/Kconfig b/net/ipv4/netfilter/Kconfig
index e2162d27007..3cf9b451675 100644
--- a/net/ipv4/netfilter/Kconfig
+++ b/net/ipv4/netfilter/Kconfig
@@ -137,6 +137,22 @@ config IP_NF_AMANDA
 
           To compile it as a module, choose M here.  If unsure, say Y.
 
+config IP_NF_PPTP
+        tristate  'PPTP protocol support'
+        help
+          This module adds support for PPTP (Point to Point Tunnelling
+          Protocol, RFC2637) conncection tracking and NAT. 
+        
+          If you are running PPTP sessions over a stateful firewall or NAT
+          box, you may want to enable this feature.  
+        
+          Please note that not all PPTP modes of operation are supported yet.
+          For more info, read top of the file
+          net/ipv4/netfilter/ip_conntrack_pptp.c
+        
+          If you want to compile it as a module, say M here and read
+          Documentation/modules.txt.  If unsure, say `N'.
+
 config IP_NF_QUEUE
         tristate "IP Userspace queueing via NETLINK (OBSOLETE)"
         help
@@ -621,6 +637,12 @@ config IP_NF_NAT_AMANDA
         default IP_NF_NAT if IP_NF_AMANDA=y
         default m if IP_NF_AMANDA=m
 
+config IP_NF_NAT_PPTP
+        tristate
+        depends on IP_NF_NAT!=n && IP_NF_PPTP!=n
+        default IP_NF_NAT if IP_NF_PPTP=y
+        default m if IP_NF_PPTP=m
+
 # mangle + specific targets
 config IP_NF_MANGLE
         tristate "Packet mangling"