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SigmaVPN configure
[peername]
proto = nacltai
proto_publickey = LOCAL_PUBKEY
proto_privatekey = REMOTE_PRIKEY
local = tuntap
local_interface = tunnel
local_tunmode = 1
peer = udp
peer_localaddr = REMOTE_IP
peer_localport = 8000
peer_remotefloat = 1
[peername]
proto = nacltai
proto_publickey = REMOTE_PUBKEY
proto_privatekey = LOCAL_PRIKEY
local = tuntap
local_interface = tunnel
local_tunmode = 1
peer = udp
peer_remoteaddr = REMOTE_IP
peer_remoteport = 8000
peer_localaddr = 0.0.0.0
peer_localport = 8000
ifconfig tunnel 10.8.0.1/24
ifconfig tunnel mtu 1440
echo 1 > /proc/sys/net/ipv4/ip_forward
iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE
iptables -A FORWARD -i eth0 -o tunnel -m state --state RELATED,ESTABLISHED -j ACCEPT
iptables -A FORWARD -i tunnel -o eth0 -j ACCEPT
iptables -t mangle -A FORWARD -p tcp --tcp-flags SYN,RST SYN -j TCPMSS --set-mss 1400
ifconfig tunnel 10.8.0.2/24
ifconfig tunnel mtu 1440
route del default
route add 106.186.124.182 gw 192.168.1.1 # change 192.168.1.1 into your gateway IP
route add default gw 10.8.0.1
# if your local is running on an NAT router, do:
echo 1 > /proc/sys/net/ipv4/ip_forward
iptables -t nat -A POSTROUTING -o tunnel -j MASQUERADE
iptables -A FORWARD -i tunnel -o eth0 -m state --state RELATED,ESTABLISHED -j ACCEPT
iptables -A FORWARD -i eth0 -o tunnel -j ACCEPT
$ ifconfig tunnel
tunnel Link encap:Ethernet HWaddr 66:a0:23:f1:fa:9e
inet addr:10.8.0.1 Bcast:10.8.0.255 Mask:255.255.255.0
$ iptables -L -n -t nat -v
Chain POSTROUTING (policy ACCEPT 1222K packets, 82M bytes)
pkts bytes target prot opt in out source destination
3929K 244M MASQUERADE all -- * eth0 0.0.0.0/0 0.0.0.0/0
$ ifconfig tunnel
tunnel Link encap:Ethernet HWaddr c6:02:a3:f9:78:c2
inet addr:10.8.0.2 Bcast:10.8.0.255 Mask:255.255.255.0
$ netstat -nr
Kernel IP routing table
Destination Gateway Genmask Flags MSS Window irtt Iface
0.0.0.0 10.8.0.1 0.0.0.0 UG 0 0 0 tunnel
192.168.1.0 0.0.0.0 255.255.255.0 U 0 0 0 eth0
10.8.0.0 0.0.0.0 255.255.255.0 U 0 0 0 tunnel
REMOTE_IP 192.168.1.1 255.255.255.255 UGH 0 0 0 eth0
$ ping 10.8.0.1
PING 10.8.0.1 (10.8.0.1): 56 data bytes
64 bytes from 10.8.0.1: icmp_seq=0 ttl=63 time=102.799 ms
64 bytes from 10.8.0.1: icmp_seq=1 ttl=63 time=99.485 ms
$ traceroute 8.8.8.8
traceroute to 8.8.8.8 (8.8.8.8), 64 hops max, 52 byte packets
1 router (192.168.1.1) 1.281 ms 1.229 ms 1.348 ms
2 10.8.0.1 (10.8.0.1) 107.986 ms 96.191 ms 94.280 ms
3 REMOTE_GATEWAY (x.x.x.x) 98.021 ms 97.467 ms *
...
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