How do I find out if my ISP uses SLIP or PPP?

[slanning at buphy.bu.edu (Scott Lanning)]

>When I dial the company modem, I get connected to an IBM 8235 secure
>server, which prompts me for a user ID and password.  The password,
>however, is not fixed:  I get it from a "SecurID" card, which supplies a
>number that changes every ten seconds.

Intriguing. Please clarify. Is the card synchronized with the server,
or...actually, is it a card as in credit card or as in network card?
Does the server emit an encrypted password for which you have the key?

>So I have several questions: how do I find out if this is PPP or SLIP?

Dial in with PPP. If it works, then it is PPP. If not, try SLIP. :)
However, if security is so crucial, it seems they would prefer PPP
because (I think I read) it is more secure.

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