[Openswan Users] WinXp <-> Openswan....getting there but no cigar

Paul Wouters paul at xelerance.com
Sun Jun 12 00:28:08 CEST 2005

On Fri, 10 Jun 2005, Jerome Kaidor wrote:

> Jun 10 15:50:10 tr4 pluto[1739]: "wintwok"[10] #19: IPsec SA
>             established {ESP=>0x19dc93d9 <0x74366f5b xfrm=3DES_0-HMAC_MD5}
> But then WinXP pops up a window that says:
>   "Error 651: The modem (or other connecting device) has reported an error."
> ..And round about this time - assumably after the Error 651 - the the Windows
> machine tells the Linux box to tear down the IPSEC SA:

>    I suspect that the ball is now in the court of l2tpd and pppd.  Since
> I've never run PPP on this server, I suppose that's all screwed up.
>   One thing that confuses me:  Windows XP asks for a user name and password
> in the "Connect" popup.  What software does this refer to?  It's not IPSEC,

It's the l2tp (ppp) authentication. You need to setup an account in
pap-secrets/chap-secrets. See Jacco's page on how to configure l2tp on linux:



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