firewall rule you'd really need to protect your machine would be to
block packets coming into the Internet-connected(or possibly the LAN-connected interface) claiming to come from the loopback.
RD
Tom Gal wrote:
Nope, it comes from the IP you set. The thing is there's no access from outside. For some reason it seems maybe that people are making this more difficult than it needs to be?
T
On 4/22/05, [EMAIL PROTECTED] <[EMAIL PROTECTED]> wrote:
Michael
Is the "trick" that the kernel makes packets destined *for* 127.0.0.0/8 appear to have come *from* 127.0.0.0/8?? I guess you couldn't have sending and receiving ports be the same then because then an app would be sending something to *itself* right?? That wouldn't make sense right?
Chris
On Fri, Apr 22, 2005 at 10:39:49AM -0700, Michael O'Keefe wrote:
[EMAIL PROTECTED] wrote:
I'm trying to understand what loopback interface is used for and /how/ it is works.
Anyone got any examples of how an app uses loopback interface effectively??
I vaguely know it acts like a remote node without
actually being one. I'd like the details.
Think of it as a network card, where the TX ethernet pair "loopback" and connect to the RX ethernet pair. Then you can talk ethernet to yourself (and if you can talk ethernet, you can talk IP, TCP, UDP and so on and so forth)
Now instead of actually wasting a PCI slot and plugging in a real NIC and a little RJ-45 adapter that does this wiring trick (which prolly would work BTW), you have a fake device that does it all for you.
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