Console into the firewall as kageeslin suggested, then do a 'get interface ' and look for something like this:
Interface ethernet0/0(VSI):
description ethernet0/0
link up, phy-link up/full-duplex
vsys Root, zone Untrust, vr trust-vr, vsd 0
*ip 192.168.1.1/24 mac abcd.abcd.abcd
manage ip 192.168.1.2, mac abcd.abcd.abcd
ping enabled, telnet enabled, SSH enabled, SNMP enabled
web enabled, ident-reset disabled, SSL enabled
Make sure you are trying to connect to one of your manageable interfaces and also make sure that it has a route back to you (get route). Can the firewall ping your PC?
[edited for additional testing steps]
Once you have console access:
Check the admin ports that the web server is listening on:
get conf | inc admin
Try setting a filter for your connection and debug.
clear dbuf
set ffilter src-ip <your ip address>
debug flow basic
[try the connection again]
sh db str
I got it!
Unbeknownst to me, ScreenOS has the ability to pipe the output from any command to a tftp server!
The usage is:
<command> > tftp <tftp ip address> <filename>
Now that it's a text file, I can grep, sed, and awk my weaselly little guts out.
Best Answer
Based on the SSG5's own manual (check out page 40), reseting the device does not make any mention of deleting the license.
Based on Juniper's own documentation, deleting a license file is only done through a command plus a reset, not merely a reset. Another reference.
Knowing your ScreenOS version might help too, but signs point to the strong liklihood that your license will remain on the device after a reset.