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14. rawip: Raw IP

14.1 rawip_whatis: What is Raw IP, when should I use it?

Raw IP does without the use of a protocol such as X.75 or HDLC (for modem emulation, etc.) or PPP. TCP/IP packets are directly exchanged. Raw IP has both advantages and disadvantages. Advantages:

• No handshaking (= faster connections)
• Authorization by Caller ID (= fast, safe, no password)
• Fixed IP address (= a broken connection can be continued by redialing)
• Higher data transfer rates
• Better stability (smaller driver = almost no bugs)

• No handshaking => Configuration must occur beforehand (IP addresses,...) => sensible to use for only for one provider at a time
• Authorization only by Caller ID => Dialin only possible from one's own number
• Fixed IP address => must be known ahead of time, more IP addresses required, no dynamic assignment of addresses possible.