Adonis:
As far as an IP address of 192.168.1.1 for the router, and 192.168.1.120 for
the PC, everyone in the world who does home networking pretty much use these
addresses, which is internal to your network. Like phone extensions within a
company, such as extensions 101 102,etc, it's not unique, as many companies
have them.
The ISP thru DHCP assigns its IP addresses that corresponds to each unit of
the network as far as I can tell, and there's utlilities that track and
display the IP address assigned by the ISP, and often, it's not something I
get off of IPCONFIG/all which gets me the internal addresses.
For instance, the PC I'm working on has an internal IP address of
192.168.1.100, but to the ISP, it's IP address 24.185.16.164, according to a
utility I use thru google, and is the location where the ISP transmits data.
What LogMeIn or GoToMyPC does is its got a little applet that fires up when
your PC fires up, and reports the local IP address of the PC to their central
computer. In my case, they'll record 24.185.16.164 in their system for
reference. This is even if the PC is located behind fire walls or on a small
network. Not sure about proxy servers though their offer the service to large
organizations, and is able to accomodate them.
With the IP address recorded, say for my office computer, when I go home, I
log into LogMeIn or GotoMyPC, their computer immediately hooks me up with the
IP address as recorded on their system.
Costwise it's not a whole lot comparaively. I'm not a VPN expert, but I'm
told I'll need a static address to get things going, the additional cost of
the ISP charging me for this per month is greater than what it costs for
these services. If you just need to look something up, the free LogMeIn is
very cost effective.
Not to mention I don't have the time to make myself a VPN expert. Takes a
minute to sign up for LogMeIn. In fact, if you got the free service, and the
PC is logged in, it'll give you the IP address assigned by the ISP.
And if I need to transfer A FILE, and mooch off the free service, I can go
on the free service, get on to the email, attach the file, such as a
spreadsheet an send it to myself. You can pretty mcuh do everything as if
you're sitting in front of the remote PC, except it feels a bit slower at
times, and sometimes may freeze up a bit based on internet traffic.