natbox-spec-surge.rcS revision 1196 
1#!/bin/sh
2EXTIF=192.168.0.7
3INTIF=10.0.0.1
4CLIENT=10.0.0.2
5
6echo "setting up network..."
7ifconfig lo 127.0.0.1
8ifconfig eth0 $EXTIF txqueuelen 1000
9ifconfig eth1 $INTIF txqueuelen 1000
10
11echo "0" > /proc/sys/net/ipv4/tcp_timestamps
12echo "0" > /proc/sys/net/ipv4/tcp_sack
13echo "5000000 5000000 5000000" > /proc/sys/net/ipv4/tcp_rmem
14echo "5000000 5000000 5000000" > /proc/sys/net/ipv4/tcp_wmem
15echo "5000000 5000000 5000000" > /proc/sys/net/ipv4/tcp_mem
16echo "262143" > /proc/sys/net/core/rmem_max
17echo "262143" > /proc/sys/net/core/wmem_max
18echo "262143" > /proc/sys/net/core/rmem_default
19echo "262143" > /proc/sys/net/core/wmem_default
20echo "262143" > /proc/sys/net/core/optmem_max
21echo "100000" > /proc/sys/net/core/netdev_max_backlog
22
23echo "1" > /proc/sys/net/ipv4/ip_forward
24
25echo "waiting for netserver..."
26/usr/bin/netcat -c -l -p 8000
27
28echo "setting up iptables..."
29IPTABLES=/sbin/iptables
30EXTIF=eth0
31INTIF=eth1
32
33$IPTABLES -P INPUT ACCEPT
34$IPTABLES -F INPUT
35$IPTABLES -P OUTPUT ACCEPT
36$IPTABLES -F OUTPUT
37$IPTABLES -P FORWARD DROP
38$IPTABLES -F FORWARD
39$IPTABLES -t nat -F
40
41$IPTABLES -A FORWARD -i $EXTIF -o $INTIF -m state --state ESTABLISHED,RELATED -j ACCEPT
42$IPTABLES -A FORWARD -i $INTIF -o $EXTIF -j ACCEPT
43$IPTABLES -A FORWARD -j LOG
44
45$IPTABLES -t nat -A POSTROUTING -o $EXTIF -j MASQUERADE
46
47echo "informing client..."
48echo "server ready" | /usr/bin/netcat -c $CLIENT 8000
49
50echo "starting bash..."
51exec /bin/bash
52