VPN Client for Macintosh
by Wesley A.
Fryer
The text below is a public copy of a post I
made to the Texas
Tech VPN Project mailing list on 10 Sept 2001 (minus IP address
info.) If you learn about other VPN Client solutions for Macintosh,
please contact
me.
Updated 1-25-2002: I downloaded and installed free PGP,
which includes a VPN client. I could NOT get it to make a VPN
connection to TTU, however. As it is free (compared to $99 for LAN
Tunnelbuilder) I would prefer to use it-- but at this point it won't
work for me. Download this from:
The newer build of LAN Tunnelbuilder does allow wireless / airport
card VPN connections.
I successfully installed a commercial VPN client for
Macintosh tonight and connected to the TTU VPN. I am able to connect
Outlook 2001 for Mac, and all program functions seem to be
functioning normally as they would on the TTU LAN/WAN, as well as for
other internet software I use. Here is my configuration:
Computer: Macintosh G4 Powerbook 500 (Titanium) OS: Mac OS
9.1 OT Version: 2.7.4 ISP: Cox Communications (Toshiba cable modem)
IP Addressing scheme: My home LAN is connected via a static IP
configuration, I am running IPNetRouter software to share the
connection with my Powerbook. The Powerbook is actually configured to
use a local hard ip address and connect thru the software router
program, which serves as a local firewall. This really shouldn't
matter to anyone else, except it is a bit unusual that I am
configured with a static ip rather than a dynamic one.
VPN Client: LAN Tunnelbuilder URL: http://www.efficient.com/products/purchase.html
Website that provided this link: http://www.consultdifferent.com/macvpnHTML.html
The website above contains excellent configuration instructions along
with download links for the LAN Tunnelbuilder 30 Day demo software.
This client is listed as commercially available for $99. I have
emailed the creators and inquired about educational licensing.
(Special pricing is NOT available for educators/schools)
After installing the sofware and restarting, I did the following
things to connect to the TTU VPN:
1- Signed up online for a remote access account (http://eraider.ttu.edu)
and paid via credit card for instant access (actually I had to wait
about 5 minutes for the new account to be registered).
2- Opened the TCP/IP control panel, pressed command-K to bring up
the configurations dialog, and made a duplicate copy of the current
settings file. I named it VPN (this name really doesn't matter).
3- I changed the CONNECT VIA menu option at the top from ETHERNET
BUILT IN to LAN TUNNELBUILDER. This kept the name server address
setting I already had entered (xx.x.xxx.xxx), but there was not an
included search domain entry. The IP, subnet, and router entries were
set to be filled in dynamically. I then closed the window, saving the
configuration.
4- I ran the "LAN TunnelBuilder Settings" application. IP address
info was already completed (copied from TCP/IP settings)
5- I kept the PPTP VPN Protocol selected (it was already
chosen).
6- I entered my 5 character eraider password beside 'VPN
Username'
7- I entered my eraider password beside 'VPN Password'
8- I entered the TTU VPN IP address (xxx.xxx.x.xxx) next to 'VPN
Server Address' I initially tried the vpn.ttu.edu address but was not
successful, the IP address worked quickly so I used it.
9- Beside 'Encryption' I changed the selection to NONE.
10- I clicked CONNECT.
After I was authenticated, I was able to run Outlook 2001 as
previously mentioned and connect to the exchange server without any
problems.
PERFORMANCE:
I did not run IPNetMonitor to gather local performance stats, but
my access speed to webpages and my email clients seemed very
comparable to my non-VPN setup-- I really can't tell a
difference.
I did run a browser based connection speed test on: http://www.solutions4sure.com//speed.asp
The result showed my speed (downstream I think) to be 662.8 Kbps.
Definitely adequate. This test was performed at 11:30 pm on a Monday
night.
TIPS:
A few things I did to make this configuration setup easier to
change as I move between home and work:
1- I created a new extention set in the extensions manager control
panel and named it Tunnelbuilder, before I installed the
Tunnelbuilder software. That way if I get a system crash and want to
undo the installation, I can make the extension switch back to my
previous configuration easily.
2- I created a new LOCATION in the location mananger control panel
and named it VPN. After installing the software, I changed this
location profile to include the different extension set and TCP/IP
settings. By doing this, I can just click the location manager icon
in the control strip and switch between my normal home internet
configuration, this new VPN home internet configuration, and my TTU
office configuration. This is one of the features I love most about
the Mac OS and hated when I ran Win98 on a Thinkpad, because none of
these IP changes require a restart (since the same extension set is
used).
3- Without a doubt, the most amazing thing about running this VPN
client (and getting a TTU LAN IP address on my computer while
connected at home via my cable modem) is that I am able to access
NT/Win98/95 shared volumes on computers within the College of
Education here at home, just as if I was in my office.
I am able to do this because of two things:
1- I am running DAVE software, which lets me connect to Windows
computers on my Macintosh just as if I was using a Wintel box. This
software can be downloaded from: http://www.thursby.com/products/dave.html
2- I changed the NETBIOS settings within DAVE (the control panel
NETBIOS) to use WINS instead of DHCP. WINS settings for TTU are
available from your department network admin.
I can therefore go to the chooser and select DAVE, and connect to
any of the College of Ed shared volumes, including the webserver
which I maintain. Before installing VPN, my only remote access option
was FTP, but that is not nearly as handy as having the volume mounted
on my desktop for local access with Dreamweaver 4.
Truly the power of Macintosh never ceases to amaze me! :-)
CONCLUSIONS:
I am glad this VPN setup was relatively easy and painless to do.
All this setup work took me about 45 minutes from start to finish
(not including typing up this report, however.) The key was finding a
good website with client download links. Again, this link is:
VPN from Your Macintosh Using OS 9 & Tunnelbuilder http://www.consultdifferent.com/macvpnHTML.html
Two other worthwhile pages for Macintosh VPN issues are:
Submitted Monday, September 10, 2001
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