pptp iptables snat记录

iptables

# Generated by iptables-save v1.4.7 on Fri May 12 18:26:39 2017
*nat
:PREROUTING ACCEPT [305:30920]
:POSTROUTING ACCEPT [5:412]
:OUTPUT ACCEPT [5:412]
-A POSTROUTING -s 192.168.2.0/24 -o eth1 -j SNAT --to-source 103.249.*.*
-A POSTROUTING -p gre -j SNAT --to-source 103.249.*.*
COMMIT
# Completed on Fri May 12 18:26:39 2017
# Generated by iptables-save v1.4.7 on Fri May 12 18:26:39 2017
*filter
:INPUT ACCEPT [627:79020]
:FORWARD ACCEPT [844:77525]
:OUTPUT ACCEPT [328:56275]
-A INPUT -p gre -j ACCEPT 
-A OUTPUT -p gre -j ACCEPT 
COMMIT
# Completed on Fri May 12 18:26:39 2017

kernel模块

modprobe nf_nat_pptp
modprobe nf_conntrack_pptp
modprobe nf_conntrack_proto_gre
modprobe nf_nat_proto_gre
modprobe nf_nat
modprobe nf_conntrack
modprobe ppdev
modprobe parport

systctl

net.ipv4.ip_forward = 1