Re: Can iptables do this?

Sasa Stupar <sasa@xxxxxxxxxxxxxxxxxxxx> · Tue, 04 Nov 2003 08:01:39 +0100

Yes, I am using it is a gateway to the inet with two NIC's installed and 
it is worth to install another NIC.

Christopher Davis wrote:

More info plz...

Are you using this as a gateway to the internet for the other computers?

If so, it's worth the $20 for another NIC.

-----Original Message-----
From: redhat-list-admin@xxxxxxxxxx
[mailto:redhat-list-admin@xxxxxxxxxx]On Behalf Of Sasa Stupar
Sent: Tuesday, November 04, 2003 1:44 AM
To: redhat-list@xxxxxxxxxx
Subject: Re: Can iptables do this?

Ding Li wrote:

My server has only one network card and I put two ip addresses on it. 
One is the normal one and the other is the local network address.  The 
problem is HOW can I disable the firewall(iptables) within the local 
network(eth0:0) and only within the local network? Say I can connect 
to the server from any machine within the local network,say 
192.168.0.2, or 192.168.0.10. But I can't connect to the server from 
outside,say 128.97.10.100 unless

I use ssh.

# /sbin/ifconfig
eth0      Link encap:Ethernet  HWaddr 00:B0:D0:17:CB:63
        inet addr:128.97.10.123  Bcast:128.97.10.255  Mask:255.255.255.0
        UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
        RX packets:152377 errors:0 dropped:0 overruns:1 frame:0
        TX packets:19528 errors:0 dropped:0 overruns:0 carrier:0
        collisions:459 txqueuelen:100
        RX bytes:18778612 (17.9 Mb)  TX bytes:14614270 (13.9 Mb)
        Interrupt:11 Base address:0xec00

eth0:0    Link encap:Ethernet  HWaddr 00:B0:D0:17:CB:63
        inet addr:192.168.0.1  Bcast:192.168.0.255  Mask:255.255.255.0
        UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
        RX packets:152377 errors:0 dropped:0 overruns:1 frame:0
        TX packets:19528 errors:0 dropped:0 overruns:0 carrier:0
        collisions:459 txqueuelen:100
        RX bytes:18778612 (17.9 Mb)  TX bytes:14614270 (13.9 Mb)
        Interrupt:11 Base address:0xec00

lo        Link encap:Local Loopback
        inet addr:127.0.0.1  Mask:255.0.0.0
        UP LOOPBACK RUNNING  MTU:16436  Metric:1
        RX packets:47572 errors:0 dropped:0 overruns:0 frame:0
        TX packets:47572 errors:0 dropped:0 overruns:0 carrier:0
        collisions:0 txqueuelen:0
        RX bytes:3471556 (3.3 Mb)  TX bytes:3471556 (3.3 Mb)

Ding

Consider using Firestarter http://firestarter.sourceforge.net
GUI frontend for iptables, runs in GNOME, very easy for managing iptables.

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