Linux Gateway 
작성일자 : 2001.11.27.

작성자 : 이경수

1. Key point

-사설 IP 의 사용 
-IP MASQUERADING 

2. Configuration environments 

<PC1>
Pentium 3 (CPU 600MHz) 
RAM : 128 MB 
NIC : 3com 3c59x,Intel eepro100 
Redhat 6.2 (kernel version : 2.2.14) 

<PC 2>
Pentium 3 (CPU 600MHz) 
RAM : 128 MB 
NIC : 3com 3c59x 
Redhat(kernel version : 2.4.2) 

3. IP ADDRESSES
<PC 1>
210.125.178.172 (spcc-mo1.uos.ac.kr) 
192.168.1.1 (linux-gw.spcc.home) 

<PC 2>
192.168.1.2 (linux.spcc.home) 

4. IP MASQUERADING
/etc/rc.d/rc.local 파일에 다음 행을 추가한다. 

/sbin/ipchains -P forward DENY
/sbin/ipchains -A forward -s 192.168.1.0/24 -j MASQ

5. 참고 자료
http://kldp.org 
Redhat linux 6.x as an internet gateway
for a home network (Paul Ramsey)