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Old 08-31-2004, 10:17 AM   #1
bruack
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Registered: Aug 2004
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I configure NAT and use "services ..." to save it but when I reboot there is no nat


Hi all,

I am running RH9. I have my firewall configured and working fine. I issue a nat command to enable nat, then use the service ... command to save it, and can see it in the iptables file. But when I reboot I don't get nat. If I manually reissue the command all works great. Do I need to provide more info or is there someting simple here I'm missing?
 
Old 08-31-2004, 11:50 AM   #2
zsoltrenyi
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it's not clear enough for me
what firewall do you use, and whith what command are you saving it?
 
Old 08-31-2004, 06:14 PM   #3
bruack
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# Generated by iptables-save v1.2.7a on Sat Aug 21 14:07:17 2004
*nat
:PREROUTING ACCEPT [8:894]
:POSTROUTING ACCEPT [45:2951]
:OUTPUT ACCEPT [45:3132]
[3:361] -A POSTROUTING -o eth1 -j SNAT --to-source 166.70.87.58
COMMIT
# Completed on Sat Aug 21 14:07:17 2004
# Generated by iptables-save v1.2.7a on Sat Aug 21 14:07:17 2004
*mangle
:PREROUTING ACCEPT [1871:128641]
:INPUT ACCEPT [1864:127783]
:FORWARD ACCEPT [5:300]
:OUTPUT ACCEPT [1723:128158]
:POSTROUTING ACCEPT [1732:129416]
COMMIT
# Completed on Sat Aug 21 14:07:17 2004
# Generated by iptables-save v1.2.7a on Sat Aug 21 14:07:17 2004
*filter
:INPUT ACCEPT [3:252]
:FORWARD ACCEPT [2:120]
:OUTPUT ACCEPT [1723:128158]
:RH-Lokkit-0-50-INPUT - [0:0]
[1864:127783] -A INPUT -j RH-Lokkit-0-50-INPUT
[5:300] -A FORWARD -j RH-Lokkit-0-50-INPUT
[0:0] -A RH-Lokkit-0-50-INPUT -p tcp -m tcp --dport 22 --tcp-flags SYN,RST,ACK SYN -j ACCEPT
[1482:101205] -A RH-Lokkit-0-50-INPUT -i lo -j ACCEPT
[369:24867] -A RH-Lokkit-0-50-INPUT -i eth0 -j ACCEPT
[4:796] -A RH-Lokkit-0-50-INPUT -s 198.60.22.2 -p udp -m udp --sport 53 -j ACCEPT
[0:0] -A RH-Lokkit-0-50-INPUT -s 198.60.22.22 -p udp -m udp --sport 53 -j ACCEPT
[0:0] -A RH-Lokkit-0-50-INPUT -p tcp -m tcp --tcp-flags SYN,RST,ACK SYN -j REJECT --reject-with icmp-port-unreachable
[9:843] -A RH-Lokkit-0-50-INPUT -p udp -m udp -j REJECT --reject-with icmp-port-unreachable
COMMIT
# Completed on Sat Aug 21 14:07:17 2004

After this runs I don't have nat. So I issue the command:
/sbin/iptables -t nat -A POSTROUTING -o $EXTIF -j SNAT --to-source $EXTADDR

Then everything works great.
If I execute the command "service save iptables" or "iptables-save > /etc/sysconfig/iptables" the above file is the result. But when I reboot I once again do not have nat.

Thanks, in advance, for your help.
Bruce
 
Old 08-31-2004, 06:15 PM   #4
bruack
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Oh, and I'm just using iptables w/ RH9. I have an outboard ip w/ my isp and and inboard that I have configed as 10.0.1.1
 
Old 09-01-2004, 02:38 AM   #5
zsoltrenyi
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tried iptables-restore?
 
  


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