Re[2]: Dial up and cable modem

[Graham Harris]

Hello BW,

Sunday, July 14, 2002, 6:22:00 AM, you wrote:

BM> The problem is that both ends of the connection will (probably) have a new 
BM> IP addressed each time he connects to the ISP. My cable modem IP 
BM> changes a couple times a month. A dial up would change every time he 
BM> connects. VNC client needs to know the IP of the VNC server to make a 
BM> connection. 

BM> Two possible solutions: 1) Use a utility to periodically determine the server 
BM> IP and then e-mail it to the client computer if it has changed. 

BM> 2) Another is registering a domain name for the server and sign up
BM> with  one of the dynamic IP updating services. (There are a number
BM> of dynamic IP services, I happen to use www.changeip.com).

BM> .....

BM> And  perhaps VNC will allow us the option of using of domain names
BM> someday in the future.

It  does already, as at work I use the machine name rather than the IP
address  because  we  have  DHCP  on  our  network. This is because (I
assume)  Host  name  look  up  (DNS)  is  already  part  of the TCP/IP
protocol.  How  do  you  think  the  Internet works? Try connecting to
http://212.58.224.111/  this is the IP address for www.bbc.co.uk. I.e.
your  Internet  browser will tell the IP stack on your PC to go to its
DNS  server/local DNS cache and retrieve the specified IP address from
that  cache  or server. Therefore using a machine name instead of a IP
address  should  work. The only problem is that the name (for example)
the local host name is not usually available to the DNS Servers on the
Internet.  This is in part due to how the WWW (not to be confused with
the Internet) works.

So  point  2  will  work,  to  a  point because the DNS servers on the
internet only know about domain names i.e. *.com, *.co.uk, etc......

The  other  solution  is  to  get  a ordinary modem in his home pc and
either  dial directly into his office network or his PC. Only assuming
that the IT bods at his office allows him to dial in remotely.

-- 
Best regards,
 Graham                            mailto:vnc "at" bmsgharr.globalnet.co.uk