No. SLIP works with SLIP. PPP works with PPP.
Some vendors may offer products which work both as SLIP and PPP. However, they must be configured to run in one mode or the other. There is no present method to determine, based upon the protocol passed at the time of a connection, which combination of SLIP protocols or PPP is being requested.
IT DEPENDS UPON MANY FACTORS. The people who
post this type of question have usually not read the
Net-2-HOWTO document.
A good technical discussion is available at Morning Star's www server,
www.morningstar.com.
If you have the choice, use CHAP. Failing that, PAP is better than nothing.
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