Win a copy of Java Challengers this week in the Java in General forum!
  • Post Reply Bookmark Topic Watch Topic
  • New Topic
programming forums Java Mobile Certification Databases Caching Books Engineering Micro Controllers OS Languages Paradigms IDEs Build Tools Frameworks Application Servers Open Source This Site Careers Other Pie Elite all forums
this forum made possible by our volunteer staff, including ...
  • Campbell Ritchie
  • Paul Clapham
  • Ron McLeod
  • paul wheaton
  • Devaka Cooray
  • Jeanne Boyarsky
  • Tim Cooke
  • Liutauras Vilda
Saloon Keepers:
  • Tim Moores
  • Tim Holloway
  • Stephan van Hulst
  • Carey Brown
  • Piet Souris
  • salvin francis
  • Mikalai Zaikin
  • Himai Minh

Questions about some elementary concept

Ranch Hand
Posts: 581
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
as a tyro to networking I am investigating my own box and local network. Dr. den Haan�s introduction to DNS is comprehensive and inviting but there�s still some issue I don�t quite understand:
1. Equipped with a router, my room mate shares an adsl Internet connection with me. Our ISP is 1&1, Germany. When DHCP enabled, the connection was very unstable, lost ping frequently. Then I disabled DHCP and IP routing, specified some static local IP address for both my room mate and me. I didn�t know the IP address of our DNS server, so that simply set the address as, the same as the default gateway. But, it works. And the connection is rather stable, but why? I don�t understand, my very humble is not wielding any power any way.
2.Sometimes I use DameWare to invoke remote help. In order to open some port, I had to enable DHCP and dynamic routing again, why? Is there any alternative to open the port xxxx on my computer without enable DHCP?
3.What�s DMZ host?
4.How does Java address a port?
Thanks in advance.

Posts: 3
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
Hello ,
for the first question the solution is bascially all the computers behind the router are taking internal IP. This IP has nothing to do with actual IP. Your router has the actual IP which is seen by the world.
Story like this gets better after being told a few times. Or maybe it's just a tiny ad:
Thread Boost feature
    Bookmark Topic Watch Topic
  • New Topic