I will recommend the use of Challenge-Handshake Authentication Protocol (CHAP) as authentication protocol. This is because when compared with other protocols like Kerberos, it offers better protection and authentication. It gives authentication to a user to that of authenticating entity. It also provides protections against playback attack by peer by use of variable challenge-value and the changing identifier characteristic. The beauty of the use of this authentication protocol is that both the client and the server should have the plaintext secret and should not be sent over the network. Software companies are coming up with their own versions of this protocol with Microsoft implementing MS-CHAP (Vachon, Graziani, 2008). This will offer more security in future since the features that will be added will be optimal.
Difference between SLIP and PPP
While these two protocols are largely similar, there is some difference. PPP is a protocol which is new in the market and therefore has some benefits. One of those benefits is that it has multi-network transport mechanism. This will mean that PPP will transport traffic in different network protocols like TCPIP, IPX and AppleTalk traffic (Vachon, Graziani, 2008). What is more, this protocol will allow the transportation of this traffic on the same connection. Another key difference is that with PPP, there is IP address configuration negotiation before the start of transport. With SLIP, it has to get the IP address of the remote machine (Vachon, Graziani, 2008). PPP also is different from SLIP in that with it offers a feature where the remote machine can send to the host the login details. It offers automatic login.
PPPSLIP connection
For Kim to move data from Pittsburgh and Cleveland offices there should some telephone lines between these two offices. There should be modems in both offices which are device that will convert analogue signal to digital and also the other way. The data from the computer is digital but telephone lines only accept analogue data. The modem does the conversion. The two computers will need to have PPP protocol being installed in their operating system which is the protocol which will connect the computers to the network (Vachon, Graziani, 2008). The network between the two machines should be configured so that there is an Intranet between the two offices. An Intranet is a connection between a subset of computers on the Internet. It is a private network belonging to a company. After this is confirmed, the machines in the two offices can be configured so that they have private IP addresses of the Intranet. There should be a File Transfer Protocol that will be installed and used to transfer the documents between the two offices. The File Transfer Protocols have both client and server modules. A server will be installed in the Intranet and client software installed in all the other computers. If a file is to be sent from Cleveland to Pittsburgh, the user logs into the FTP client machines and uploads the files.
Difference between SLIP and PPP
While these two protocols are largely similar, there is some difference. PPP is a protocol which is new in the market and therefore has some benefits. One of those benefits is that it has multi-network transport mechanism. This will mean that PPP will transport traffic in different network protocols like TCPIP, IPX and AppleTalk traffic (Vachon, Graziani, 2008). What is more, this protocol will allow the transportation of this traffic on the same connection. Another key difference is that with PPP, there is IP address configuration negotiation before the start of transport. With SLIP, it has to get the IP address of the remote machine (Vachon, Graziani, 2008). PPP also is different from SLIP in that with it offers a feature where the remote machine can send to the host the login details. It offers automatic login.
PPPSLIP connection
For Kim to move data from Pittsburgh and Cleveland offices there should some telephone lines between these two offices. There should be modems in both offices which are device that will convert analogue signal to digital and also the other way. The data from the computer is digital but telephone lines only accept analogue data. The modem does the conversion. The two computers will need to have PPP protocol being installed in their operating system which is the protocol which will connect the computers to the network (Vachon, Graziani, 2008). The network between the two machines should be configured so that there is an Intranet between the two offices. An Intranet is a connection between a subset of computers on the Internet. It is a private network belonging to a company. After this is confirmed, the machines in the two offices can be configured so that they have private IP addresses of the Intranet. There should be a File Transfer Protocol that will be installed and used to transfer the documents between the two offices. The File Transfer Protocols have both client and server modules. A server will be installed in the Intranet and client software installed in all the other computers. If a file is to be sent from Cleveland to Pittsburgh, the user logs into the FTP client machines and uploads the files.
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