Public Access WIFI Security - Page 2

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Re: Public Access WIFI Security

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Another company offering VPN for free is iPig, see

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iPig comes with the iPig SERVER (also freeware), so you can set up your
own VPN server very easily. Thus the traffic is NOT routed via the
company's server.

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iPig Server is MUCH easier to install then OpenVPN, basically you just
start the installer, add the user name and password you want to use,
and your private VPN server is ready to go.

Re: Public Access WIFI Security

On 30 Sep 2005 13:33:31 -0700, in alt.internet.wireless you wrote:

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Would somebody mind explaining a bit about these services to me?  I'm
somewhat confused.  It seems to me that if you are using, for example,
IPig's company's servers, you are sending information between the two
of you (between your computer and the IPig server) in an encrypted
manner.  But once it gets there, it is decrypted and sent on its way
to its final destination.  Hence, folks can still get your information
because it travels a part of the way in an unencrypted manner.  Are
the Ipig servers clever enough to continue the encryption if the
eventual destination is also running an IPig server?

Obviously, the first 1/2 of the data's journey is much more vulnerable
when it travels over a wireless connection (wifi, 802.11g, etc.).  So
for that purpose, using the company's servers (or Google's) makes a
lot of sense.

As for openVPN and, I would imagine, setting up an IPig server, one
can establish their own VPN with a minimum of hassle, it seems. But
I've got a funny situation and I'm wondering if I'm precluded from
doing this.  And that is that my wifi provider uses private IP
addresses, not public ones.  So, everybody from my wifi ISP appears to
be coming from the IP address that shows up in the headers of this
message.  My router is set to a WAN address that begins with
192.168.x.x.  (My LAN addresses are 192.168.y.x) If I have 3 computers
here, would setting up an IPig server at another location that is
permanently connected to the internet even work?  It would seem I have
to be sending information to the IPig server saying that my address is
the public IP address and once it gets back to my ISP won't know who
to send it to.  Obviously, the routers automatically take care regular
HTTP: type communication.  But as I understand the IPig configuration
file, my outbound communication includes my IP address.

So, I'm a bit confused.



Re: Public Access WIFI Security

On Fri, 30 Sep 2005 22:00:54 GMT, (Mike
Preston) wrote:

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Sure.  In order to insure wireless security, you're introducing a
middleman into the system.  The typical wireless hot spot is not going
to terminate your VPN for you.  The administrative overhead for
passwords and authentication is just too much.  So, you hire a 3rd
party to do it for you.  

A VPN encrypted "tunnel" is established between your wireless laptop
and the 3rd party VPN service.  Everything that goes between your
laptop and this 3rd party is encrypted inside the tunnel.  Anyone
sniffing the wireless traffic at the hot spot will see only encrypted

The 3rd party VPN service provider the decrypts the traffic and
shovels it to a proxy server (which regenerates the connections) and
relays the traffic on its way to wherever your mail servers are
located.  This traffic is NOT encrypted and can be sniffed.

Note that this arrangement does NOT offer end to end encryption as is
therefore still at risk from anyone sniffing the wired part of the
connection.  This constitutes a substantial improvement in security,
but end to end encryption by the mail service provider would be much

Jeff Liebermann
150 Felker St #D
Santa Cruz CA 95060
Skype: JeffLiebermann     AE6KS    831-336-2558

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