R help - Jan 2015 - RStudio connection to server: Safari cannot open page because it could not connect to the server

I set up Rstudio, and can access it from within my lan using 
http:/192.168.108:8787.
I looked up my external IP address using one of the websites that returns an ip
addresses and tried to connect from outside my LAN using
http://73.213.144.65:8787
and received a message:
Safari cannot open the page because the page because it could not connect to the
server.
I can ping the 73.213.144.65

My LAN connects to the WWW through a wireless router which connects to a cable
model.

Can anyone help me connect?
Thank you,
John


John David Sorkin M.D., Ph.D.
Professor of Medicine
Chief, Biostatistics and Informatics
University of Maryland School of Medicine Division of Gerontology and Geriatric
Medicine
Baltimore VA Medical Center
10 North Greene Street
GRECC (BT/18/GR)
Baltimore, MD 21201-1524
(Phone) 410-605-7119
(Fax) 410-605-7913 (Please call phone number above prior to faxing) 

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Hi John,

This isn't a question about R, and so is off-topic here. Try a web search
for "home server port forwarding" or similar.

Best,
Ista
On Jan 15, 2015 7:30 AM, "John Sorkin" <JSorkin at
grecc.umaryland.edu> wrote:
> I set up Rstudio, and can access it from within my lan using
> http:/192.168.108:8787.
> I looked up my external IP address using one of the websites that returns
> an ip addresses and tried to connect from outside my LAN using
> http://73.213.144.65:8787
> and received a message:
> Safari cannot open the page because the page because it could not connect
> to the server.
> I can ping the 73.213.144.65
>
> My LAN connects to the WWW through a wireless router which connects to a
> cable model.
>
> Can anyone help me connect?
> Thank you,
> John
>
>
> John David Sorkin M.D., Ph.D.
> Professor of Medicine
> Chief, Biostatistics and Informatics
> University of Maryland School of Medicine Division of Gerontology and
> Geriatric Medicine
> Baltimore VA Medical Center
> 10 North Greene Street
> GRECC (BT/18/GR)
> Baltimore, MD 21201-1524
> (Phone) 410-605-7119
> (Fax) 410-605-7913 (Please call phone number above prior to faxing)
>
> Confidentiality Statement:
> This email message, including any attachments, is for ...{{dropped:16}}