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CONFIG_PPP: PPP (point-to-point protocol) support

General informations

The Linux kernel configuration item CONFIG_PPP has multiple definitions:

PPP (point-to-point protocol) support found in arch/um/Kconfig_net

The configuration item CONFIG_PPP:

Help text

(none)

PPP (point-to-point protocol) support found in drivers/net/Kconfig

The configuration item CONFIG_PPP:

Help text

PPP (Point to Point Protocol) is a newer and better SLIP. It serves the same purpose: sending Internet traffic over telephone (and other serial) lines. Ask your access provider if they support it, because otherwise you can't use it; most Internet access providers these days support PPP rather than SLIP.

To use PPP, you need an additional program called pppd as described in the PPP-HOWTO, available at http://www.tldp.org/docs.html#howto. Make sure that you have the version of pppd recommended in Documentation/Changes. The PPP option enlarges your kernel by about 16 KB.

There are actually two versions of PPP: the traditional PPP for asynchronous lines, such as regular analog phone lines, and synchronous PPP which can be used over digital ISDN lines for example. If you want to use PPP over phone lines or other asynchronous serial lines, you need to say Y (or M) here and also to the next option, "PPP support for async serial ports". For PPP over synchronous lines, you should say Y (or M) here and to "Support synchronous PPP", below.

If you said Y to "Version information on all symbols" above, then you cannot compile the PPP driver into the kernel; you can then only compile it as a module. To compile this driver as a module, choose M here. The module will be called ppp_generic.

PPP (point-to-point protocol) support found in drivers/net/ppp/Kconfig

The configuration item CONFIG_PPP:

Help text

PPP (Point to Point Protocol) is a newer and better SLIP. It serves the same purpose: sending Internet traffic over telephone (and other serial) lines. Ask your access provider if they support it, because otherwise you can't use it; most Internet access providers these days support PPP rather than SLIP.

To use PPP, you need an additional program called pppd as described in the PPP-HOWTO, available at http://www.tldp.org/docs.html#howto. Make sure that you have the version of pppd recommended in Documentation/Changes. The PPP option enlarges your kernel by about 16 KB.

There are actually two versions of PPP: the traditional PPP for asynchronous lines, such as regular analog phone lines, and synchronous PPP which can be used over digital ISDN lines for example. If you want to use PPP over phone lines or other asynchronous serial lines, you need to say Y (or M) here and also to the next option, "PPP support for async serial ports". For PPP over synchronous lines, you should say Y (or M) here and to "Support synchronous PPP", below.

If you said Y to "Version information on all symbols" above, then you cannot compile the PPP driver into the kernel; you can then only compile it as a module. To compile this driver as a module, choose M here. The module will be called ppp_generic.

Hardware

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