On Mon, 4 Feb 2002, Cristian wrote:

> Am urmatoarele linii. Cum le-as putea face cu iptables?
> #!/bin/sh
> #
> # rc.firewall - Initial SIMPLE IP Masquerade test for 2.1.x and 2.2.x kernels using 
>IPCHAINS
> #
ipchains to iptables free converter vers diz.01
decat sa tot scriu iptables, ipchains prefer o variabila
ipfw=/usr/sbin/iptables

> /sbin/ipchains -F input
> /sbin/ipchains -F output
> /sbin/ipchains -F forward
>
$ipfw -F
$ipfw -F -t nat (din cauza ca faci nat mai jos)
> /sbin/ipchains -P input ACCEPT
> /sbin/ipchains -P output ACCEPT
> /sbin/ipchains -P forward DENY
>
$ipfw -P INPUT ACCEPT
$ipfw -P FORWARD DROP
$ipfw -P OUTPUT ACCEPT

> /sbin/ipchains -A forward -s 192.168.1.20/32 -j MASQ   #catedra
> /sbin/ipchains -A forward -s 192.168.1.100/32 -j MASQ   #post 101
> /sbin/ipchains -A forward -s 192.168.1.200/32 -j MASQ   #post 100
> /sbin/ipchains -A forward -s 192.168.1.201/32 -j MASQ   #post 101
> /sbin/ipchains -A forward -s 192.168.1.202/32 -j MASQ   #post 102
>
$ipfw -A POSTROUTING -t nat -s 192.168.1.20/32 -j SNAT --to-source
<ip-interfata externa>

si repeti linia de mai sus pentru fiecare host

nu uita de echo 1 >/proc/sys/net/ipv4/ip_forward

> Am folosit redhat 6.2, si acum am trecut la 7.1, dar inca nu m-am acomodat
> prea bine cu iptables. Inca mai invat. As dori sa fac cu iptables ceea ce
> am facut cu ipchains. Ma poate ajuta cineva? Va multumesc mult.
>
zi-mi daca mere :)

PS: daca ai dialup ar fi preferabil -j MASQ in loc de -j SNAT dar lasa asa
daca ai ip fix

----------------------------
Mihai RUSU
"... and what if this is as good as it gets ?"

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