nqkoi 6te moje li da mi dade to4nite komandi kak da si
 naprava ma6inata s linux-sa da puska net na drugite 2 pc-ta
s windows interneta mi e po modem. 

Blagodaria vi predvaritelno

 Zdravei! Ideiata ti da napravish gateway za internet e super.
Neshtata sa lesni, triabva da napravish tri stupki.

 1. Pazreshavane na ip forwarding. Pri debiana tova stava ot
faila /etc/network/options/
 Sushto tova mozhe da napravish i kato promenish vuv faila
 /proc/sys/net/ipv4/ip_forward stounosta 0 na 1. Tova stava s
echo ...

 2. Triabva da pusnesh nat na interfeisa ot koito vzimash net.
Tova se pravi s iptables
iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE

 3. Triabva da pusnesh DNS Server na gateway-iat. Mozhe da
 zadadesh na mashinite, koito shte polichavat net napravo DNS
Servera na ISP-to. Uspeh!!!

pi4aga tova koeto mi kazva6 go prava no ne stava help pls

kaji pone s kuv linux si brat

RH9 molqvi help

Mi shtom si s modem (predpolagam dial-up)
iptables -t nat -A POSTROUTING -o ppp0 -j MASQUERADE

#!/bin/sh
# added by SADMIN for cisco acad
# for more information see:
#
# Version 2.06
# - added (experimental) support for DNAT
# Version 2.05
# - move FORWARD default policy to rc.firewall scrip
#Verison 2.04
# - added xxx.xxx.xxx.xxxIP available for NAT
# Version 2.03
 # - removed DROP policy for POSTROUTING - deny all trafic
from localhost
# Version 2.02
# - change default policy of POSTROUTING to DROP
# - change output message
# Version 2.01
 # - added support for SNAT to support NAT-ting with more
than one  IPs
# - change default poicy of FORWARD to DROP
# - added logging

VERSION_MAJOR="2"
VERSION_MINOR="06"
echo "Version ${VERSION_MAJOR}.${VERSION_MINOR}"

IPTABLES=/usr/sbin/iptables
EXTIF="eth1"
INTIF="eth0"
MASQ_NET="aaa.aaa.aaa.aaa/24"
SNAT_IPS="xxx.xxx.xxx.xxx"
SNAT_IPS2="yyy.yyy.yyy.yyy"


# setting up default policy
$IPTABLES -P INPUT ACCEPT
$IPTABLES -P OUTPUT ACCEPT
# Modified by SADMIN for tighten security
$IPTABLES -P FORWARD ACCEPT

# set this in rc.firewall script
# $IPTABLES -P FORWARD DROP


# clear all iptables rules for NAT
$IPTABLES -F
$IPTABLES -t nat -F

# added by SADMIN for Cisco Academy setup
echo "  - Setting up for NAT"
 echo "  - Enabling MASQUERADing functionality on $EXTIF for
net $MASQ_NET"

 $IPTABLES -t nat -A POSTROUTING -o $EXTIF -s $MASQ_NET -j
SNAT --to-source $SNAT_IPS --to-source $SNAT_IPS2
 $IPTABLES -A FORWARD -i $INTIF -o $EXTIF -s $MASQ_NET -j
ACCEPT
 $IPTABLES -A FORWARD -i $EXTIF -o $INTIF -m state --state
ESTABLISHED,RELATED -j ACCEPT

# Needed for DNAT
 # $IPTABLES -A FORWARD -i $INTIF -o $EXTIF -m state --state
ESTABLISHED,RELATED -j ACCEPT

# may not be needed if default policy is DROP
 # for the cas if someone chang its (internal net) IP
address
 $IPTABLES -A FORWARD -i $INTIF -o $EXTIF -s ! $MASQ_NET -j
DROP
#
# 

# log everything else...
# $IPTABLES -A FORWARD -j LOG

 #echo "$IPTABLES -A FORWARD -i $EXTIF -m state --state
NEW,INVALID -j DROP"
 # $IPTABLES -A FORWARD -i $EXTIF -m state --state
NEW,INVALID -j DROP