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LinuxPlanet: Linux Home Networking, Part 5Oct 10, 2000, 13:10 (0 Talkback[s])
(Other stories by William Wong)
"Setting up a Linux server as a router with two Ethernet network adapters is more straightforward compared to the dynamic dial-up connection presented in this article because of two things. The first is the fixed IP addresses involved. Second, routing and NAT configuration is static. With a dial-up connection these change. The IP address for the dial-up connection is normally assigned using DHCP by the ISP when a connection is made. Likewise, the routing configuration must be changed to accommodate the new IP address."
"This article takes a look at how to configure pppd. Pppd is the Linux point-to-point protocol (PPP) daemon. It provides a network interface to a serial connection that is typically an analog modem or possibly an ISDN adapter. PPP is also used on some non-dial-up connections. More specifically, some ISPs provide DSL and cable modem connections using PPP. In this case, the connection to the PC is via an Ethernet connection is the same as using fixed IP addresses but a protocol called PPP over Ethernet (PPPoE) is used. PPPoE operates the same way PPP does so we will not look at this in any more detail but concentrate on pppd. Typically just the programs are different and some configuration details differ."
"Two items must be addressed for the dial-up connection to be used. The first is the pppd program that provides the connection. The second is the ipchains program."
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