It is hard to tell how many cars are actually using each street. Additional access points can be added with little disruption. It is easy to get on to and off of the street. If we were to compare TCP/IP traffic to vehicle traffic, the basic TCP/IP protocol would be comparable to a network of city streets. Since PPP was designed to do things that were either impossible or unnecessary with Ethernet, users are often confused as to why one would want to use PPP over Ethernet at all.
#Ppp over serial serial#
PPP, which was designed for serial communications, has now been adapted to Ethernet, and is appropriately called PPP over Ethernet (PPPoE). Because of its ability to route TCP/IP packets over serial links and its authentication capabilities, PPP is generally used by Internet Service Providers (ISPs) to allow dial-up users to connect to the Internet.įigure 1: PPP is used by Internet Service Providers (ISPs) to allow dial-up users to connect to the Internet. Thus, a router or server receiving a request via PPP where the origin of the request is not secure, would require authentication. To this end PPP incorporates user name and password security. When serial links that are part of the public telephone system are used, care must be taken to ensure the authenticity of all communications. PPP is more feature rich and has largely supplanted SLIP. To make TCP/IP work over these serial links, it was necessary to create a protocol that could transmit TCP/IP packets over serial lines. Telecommunications companies however offer serial communications links around the globe right now and have done so for many years. At the time of this writing it is not feasible to extend an Ethernet network over many thousands of miles although this may soon change using 10 Gigabyte Ethernet over fibre optic. This makes it unsuitable for WANs (Wide Area Networks). TCP/IP by itself cannot be transmitted over a serial link.
#Ppp over serial software#
Our software allows users to connect whole LANs to the Internet, using single or multiple Internet connections. Vicomsoft develops and provides Network Address Translation and TCP/IP routing technology, including PPP and PPPoE features.
#Ppp over serial pdf#
(This is another way of saying that we can't be held liable or responsible for the content.) Download the PPPoE PDF Introduction However we intend this Q&A as a guide only and recommend that users obtain specific information to determine applicability to their specific requirements.
#Ppp over serial update#
We are providing the best information available to us as of the date of this writing and intend to update it at frequent intervals as things change and/or more information becomes available.
We welcome feedback and comments from any readers on the usefulness or content. Our knowledge of this subject relates to Internet connectivity in general, and stems from our own TCP/IP routing technology. We are presenting this information in a Q&A (Questions and Answers) format that we hope will be useful. PPPoE (PPP over Ethernet) was designed to bring the security and metering benefits of PPP to Ethernet connections such as DSL. Modem dial-up connection, on the other hand, use PPP (Point to Point Protocol) which provides secure login, and traffic metering among other advanced features. As such, plain TCP/IP has been used, with no additional protocols.
Computers connected to the Internet via DSL do so through an Ethernet link. This has increased concerns on the part of DSL service providers about security.
The arrival of low cost broadband technologies in general and DSL (Digital Subscriber Line) in particular has greatly increased the number of computer hosts that are permanently connected to the Internet.
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