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| Firewall query https://forum.linode.com/viewtopic.php?f=19&t=6245 |
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| Author: | Xenshine [ Mon Nov 08, 2010 8:23 am ] |
| Post subject: | Firewall query |
I'm modifying an iptables script but there are a few bits I'm not certain about. These two variables are defined Code: LO_IFACE="lo" So the loopback address is 127.0.0.1... but I don't understand the LO_IFACE="lo" bit Here is an example of where these are referred to in a rule Code: iptables -A INPUT -p ALL -i $LO_IFACE -s $LO_IP -j ACCEPT So instead of defining these variables you could put 127.0.0.1 for LO_IP, but what would you put for LO_IFACE? Does this even make any sense?? |
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| Author: | rsk [ Mon Nov 08, 2010 10:41 am ] |
| Post subject: | |
lo (lowercase LO) is the "network interface" used for loopback. In easy terms, think of it as of a virtual network card, that's connected to the loopback only. Just like eth0, eth1, eth2 are Ethernet cards, ppp0...pppX are PPP interfaces, and so on. And, you'd put "lo" instead of $LO_IFACE, obviously. |
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