Hill Associates - Living in a connected world : TCP/IP

PodSnack: Static Route

Posted Tuesday, October 07, 2008 6:00 AM by mgilbert :: 0 Comments
Filed under IP, PodSnacks, TCP/IP, Routing, Telecommunications, Technology, Data Communications, Network Layer, Layer 3
Attachment(s): http://podcast.hill-vt.com/podsnacks/2008q4/static_route.mp3

We now return to one of my personal favorites: routing . Today we look at a specific type of route called the static route . Although it sounds rather inflexible, it turns out this type of route is fairly common, and plays some important roles in packet Read More...

PodSnacks: Instant Messaging

Posted Thursday, October 02, 2008 6:00 AM by mgilbert :: 0 Comments
Filed under PodSnacks, Internet, TCP/IP, Telecommunications, Technology, Data Communications, Applications
Attachment(s): http://podcast.hill-vt.com/podsnacks/2008q4/im.mp3

It isn't exactly email , but instant messaging (IM) is also a messaging application we find both out on the Internet and within private corporate networks. It is widely used, and has even given rise to its own sub-language! In today's PodSnack, Read More...

PodSnacks: Multipurpose Internet Mail Extensions (MIME)

Posted Tuesday, September 30, 2008 6:00 AM by mgilbert :: 0 Comments
Filed under PodSnacks, Internet, TCP/IP, Telecommunications, Technology, Data Communications, Applications, Application Services Layer
Attachment(s): http://podcast.hill-vt.com/podsnacks/2008q3/mime.mp3

Today we shift back to email . We recently discussed SMTP , so you should know a bit about how email moves across the Internet . But SMTP, as it was initially conceived, was a pure text-based system. Today we want to send far more than that using email, Read More...

PodSnacks: Private IP Addressing

Posted Monday, September 29, 2008 6:00 PM by mgilbert :: 0 Comments
Filed under IP, PodSnacks, Internet, TCP/IP, Telecommunications, Technology
Attachment(s): http://podcast.hill-vt.com/podsnacks/2007q3/private_ip_addresses.mp3

Today we wander back to TCP/IP , specifically the IP part, specifically the IP address part, specifically the private IP address part . Private IP addresses are used in conjunction with NAT or NAPT to provide for more flexible IP addressing and conserve Read More...

PodSnacks: Java

Posted Thursday, September 25, 2008 6:00 AM by mgilbert :: 0 Comments
Filed under PodSnacks, Internet, TCP/IP, Telecommunications, Technology, Data Communications, Applications, Computing, Application Services Layer
Attachment(s): http://podcast.hill-vt.com/podsnacks/2008q3/java.mp3

Today we shift to a technology related to the World Wide Web . This technology is actually a programming language known as Java , and it is the magic that makes a lot of the advanced capability of the WWW possible. In today's PodSnack, I'll explain Read More...

PodSnack: Traceroute

Posted Wednesday, September 24, 2008 6:00 AM by mgilbert :: 0 Comments
Filed under PodSnacks, Internet, TCP/IP, Telecommunications, Technology, Network Management, Applications
Attachment(s): http://podcast.hill-vt.com/podsnacks/2007q3/traceroute.mp3

Recently, we did a session on Ping , a TCP/IP utility we find on most computers. Today, we look at another TCP/IP utility: traceroute . Where Ping tests for reachability and provides round-trip delay on an end-to-end basis, traceroute is really focused Read More...

PodSnacks: Simple Mail Transfer Protocol (SMTP)

Posted Tuesday, September 23, 2008 6:00 AM by mgilbert :: 0 Comments
Filed under PodSnacks, Internet, TCP/IP, Telecommunications, Technology, Data Communications, Applications, Application Services Layer
Attachment(s): http://podcast.hill-vt.com/podsnacks/2008q3/smtp.mp3

Today we take on email, but this time by looking at the primary protocol used for sending email over the Internet : the Simple Mail Transfer Protocol (SMTP). I hope you find it informative! As always, you can listen to (or download) the PodSnack by clicking Read More...

PodSnack: Ping

Posted Monday, September 22, 2008 6:00 AM by mgilbert :: 0 Comments
Filed under PodSnacks, Internet, TCP/IP, Telecommunications, Technology, Applications
Attachment(s): http://podcast.hill-vt.com/podsnacks/2007q3/ping.mp3

Today we take a look at a TCP/IP utility known as ping . Ping is often used to test a network, or to test the reachability of a server. It's supported on most systems today. In today's PodSnack, Dave will give you an overview of what it is, what Read More...

PodSnacks: Hypertext Transfer Protocol (HTTP)

Posted Tuesday, September 09, 2008 6:00 AM by mgilbert :: 0 Comments
Filed under Web, PodSnacks, Internet, TCP/IP, Telecommunications, Technology, Data Communications, Application Services Layer
Attachment(s): http://podcast.hill-vt.com/podsnacks/2008q3/http.mp3

My desk is overflowing, and I have to get back to my development work, so this will be short and sweet. Today I'm going to talk to you about the key protocol that makes the World Wide Web possible. It's called the Hypertext Transfer Protocol ( Read More...

PodSnack: Telnet

Posted Friday, August 22, 2008 6:00 AM by mgilbert :: 0 Comments
Filed under PodSnacks, Internet, TCP/IP, Telecommunications, Technology, Network Management, Applications, Application Services Layer
Attachment(s): http://podcast.hill-vt.com/podsnacks/2007q2/telnet.mp3

Let's go back to the Internet and look at yet another Application Layer protocol: Telnet . Telnet is a virtual terminal application that operates on the client/server model. Running over TCP to ensure end-to-end reliability, and using TCP Port 23 Read More...

PodSnacks: Session Initiation Protocol (SIP)

Posted Friday, August 08, 2008 6:00 AM by mgilbert :: 0 Comments
Filed under PodSnacks, Internet, IPT, TCP/IP, Telephony, Telecommunications, Technology
Attachment(s): http://podcast.hill-vt.com/podsnacks/2007q2/sip.mp3

Today, Paul gets back into the mix and talks to us a bit about the Session Initiation Protocol (SIP). As the name implies, this TCP/IP protocol is designed to establish sessions between two systems, and to negotiate the parameters of these sessions, in Read More...

PodSnacks: Simple Network Management Protocol (SNMP)

Posted Monday, July 21, 2008 6:00 AM by mgilbert :: 1 Comments
Filed under PodSnacks, TCP/IP, Telecommunications, Technology, Network Management, Application Layer
Attachment(s): http://podcast.hill-vt.com/podsnacks/2007q2/snmp.mp3

Today, we're responding to a request for information about the Simple Network Management Protocol (SNMP). This is a critical protocol for any IP -based network. It defines how managers (software with a supervisory function) communicate with agents Read More...

PodSnacks: Root Name Server

Posted Thursday, July 17, 2008 6:00 AM by mgilbert :: 1 Comments
Filed under PodSnacks, Internet, DNS, TCP/IP, Telecommunications, Technology, Data Communications, Application Layer
Attachment(s): http://podcast.hill-vt.com/podsnacks/2008q3/root_name_server.mp3

We recently did a PodSnack on the top-level domain (TLD) structure in DNS . In that PodSnack, I made reference to the root name server s in the Internet, and promised to explain it in another PodSnack. Well, there's no time like the present! Tune Read More...

PodSnacks: Top-Level Domain (TLD)

Posted Tuesday, July 15, 2008 6:00 AM by mgilbert :: 1 Comments
Filed under PodSnacks, Internet, DNS, TCP/IP, Telecommunications, Technology, Data Communications, Application Layer
Attachment(s): http://podcast.hill-vt.com/podsnacks/2008q3/tld.mp3

You use DNS every day, and probably never think about it. You most likely don't even think of what happens when you type in (or click on) a name like www.hill.com . What happens, however, is a relatively straightforward process of mapping the name Read More...

PodSnacks: Application Services Layer

Posted Thursday, July 10, 2008 6:00 AM by mgilbert :: 0 Comments
Filed under PodSnacks, Internet, TCP/IP, Telecommunications, Technology, Data Communications, Applications, Application Layer
Attachment(s): http://podcast.hill-vt.com/podsnacks/2008q3/application_services_layer.mp3

Today we go back to the world of network models and architectures, and we take a quick look at the highest layer of the four-layer TCP/IP model: the Application Services Layer . This is the layer that is concerned with the various tasks we are trying Read More...

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