[Dshield] How do I determine NAT address
security at admin.fulgan.com
Fri Mar 18 08:31:03 GMT 2005
Let's answer straight: you cannot do that at the IP level, you need
something in the application layer.
Johannes has already put something like that in place: using java and
address in the HTTP request parameters. The trouble is: it won't
always work. It didn't work on my machine and didn't work on other
machines I've tried (although it would probably work better if is was
digitally signed by a root that is installed on my machine ;)).
It sounds like you're trying to build a user authetication and
license management system: is that what you're doing ? Because, if
that's what you're doing, then I think you aren't going in the correct
direction (i.e. it won't work that way with any kind of reliability).
Thursday, March 17, 2005, 4:51:53 PM, you wrote:
CM> I have a need to determine a local IP address when a user logs in to a
CM> secured portion of my web site. The external IP is showed in the logs but I
CM> need to know if I can determine the local address behind the firewall. Can
CM> someone point me in the right direction or offer me a solution? I need to
CM> determine which workstations are logging in and that user names are not
CM> being shared from the same WAN link. The site is on a Win 2K3 box.
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