PPTP is a great option because it’s simple and secure. It’s used to establish virtual connections across the internet via PPP and TCP/IP, enabling two networks to use the internet as their WAN link while retaining the security benefits of a private network. PPTP is a remote access protocol, based on PPP, created by Microsoft. Once you connect to an ISP, the DHCP server will likely provide your IP address. This information can be assigned via a LAN connection or a dial-up connection. This includes subnet mask, DNS configuration, and host IP address. DHCP is a protocol within TCP/IP protocol stack that is responsible for assigning TCP/IP addressing information.
This is usually performed with the Dynamic Host Configuration Protocol (DHCP). Once you connect the router via PPP, it assigns all other TCP/IP parameters for you. Unfortunately, one of PPP’s disadvantages is it attracts a high overhead and isn’t compatible with certain older configurations.įor technicians, PPP is generally considered easily configurable. PPP can also automatically configure TCP/IP and alternative protocol parameters via IP control protocol (IPCP) NCP. Because it can run over numerous physical media types and features error-checking functionalities, PPP has almost entirely replaced SLIP. PPP can support multiple network protocols by using protocol-specific network control protocols (NPCs). LCP allows PPP to support authentication negotiation, in addition to compression and encryption negotiation between the client and the server, using encryption control protocols (ECPs) and compression control protocols (CCPs). PPP utilizes the Link Control Protocol (LCP), which tests the link between client and PPP host and specifies PPP client configuration, to communicate between host and PPP client. PPP is used most often for remote connections to LANs and ISPs. It establishes a connection via point-to-point links (i.e., dedicated leased lines and dial-up). PPP is a remote access protocol that allows you to implement TCP/IP. POINT-TO-POINT PROTOCOL (PPP) AND PPPOE (POINT-TO-POINT PROTOCOL OVER ETHERNET) If you don’t use a script, you’ll need to establish the connection and then open a terminal window so you can manually log in to the remote access server. This ensures the script can enter each parameter. When you use SLIP to log in to a remote machine, you must configure a terminal mode after you’ve logged into the remote site. To set up SLIP for a remote connection, you’ll need a SLIP account on the host machine, as well as a batch file or script on the workstation. You can only use it on serial connections, which is a notable restriction. SLIP is associated with a low overhead and can be used to transport TCP/IP over serial connections, but it doesn’t feature packet addressing or error checking capabilities. SLIP operates at both the data link and physical layers of the OSI model and continues to be used today in many network operating systems, as well as UNIX.
UNIX developed SLIP as a way of transmitting TCP/IP over serial connections.