使用slackware默认的启动脚本快速建立局域网内网关服务器

/sbin/modprobe 3c59x
/sbin/modprobe via-rhine

# IP masquerading modules:
# These modules are used with IP masquerading, a process which allows you to
# use a Linux box connected to the Internet (via PPP or SLIP, or some other
# means) as a gateway for other Linux, Windows, Macintosh boxes on your local
# network that don't have real IP addresses on the Internet. The packets
# going through the Linux machine are "masqueraded", or made to look as if
# they're all coming from the one real IP address on the Internet.
#
# As a quick example (for a much more extensive treatment, see the IP-Masquerade
# mini-HOWTO) to allow Internet access to a local network 192.168.11.0 with a
# netmask of 255.255.255.0, you'd use these commands in /etc/rc.d/rc.local:
#
# # EXTERNAL -> external network interface 
# # INTERNAL -> internal network interface
 EXTERNAL=eth1
 INTERNAL=eth0
 echo 1 > /proc/sys/net/ipv4/ip_forward
 echo "Setting up NAT (Network Address Translation)..."
# # by default, nothing is forwarded.
 iptables -P FORWARD DROP
# # Allow all connections OUT and only related ones IN
 iptables -A FORWARD -i $EXTERNAL -o $INTERNAL -m state --state ESTABLISHED,RELATED -j 

ACCEPT
 iptables -A FORWARD -i $INTERNAL -o $EXTERNAL -j ACCEPT
# # enable MASQUERADING
 iptables -t nat -A POSTROUTING -o $EXTERNAL -j MASQUERADE

/sbin/mii-tool 10baseT-FD eth1

# Config information for eth0:
IPADDR[0]="192.168.0.252"
NETMASK[0]="255.255.255.0"
USE_DHCP[0]=""
DHCP_HOSTNAME[0]=""

# Config information for eth1:
IPADDR[1]="172.60.1.174"
NETMASK[1]="255.255.255.252"
USE_DHCP[1]=""
DHCP_HOSTNAME[1]=""

# Default gateway IP address:
GATEWAY="172.60.1.173"