[pptp-server] Problem connecting over Dialup connection

[Jeff Rosenberg]

Have installed PPTPD.  The problem I am experiencing is that from cable 
modems on the internet, there is no problem using Win98_SE to create the 
PPTP tunnel into the company.  The VPN comes up great from any and all 
employees who have a cable modem.

When trying users who have regular Dial-up connections we all get an error 
from the VPN connection #645.

Since the Cable modems work I am assuming my configuration (PPPD, 
chap-secrets, etc. etc. is properly done).  I have played with the MTU and 
MRU settings in the Options file but no values produce a connection with the 
#645 error.

Here is the PPPD Options file and the debug info. from the PPTPD and Kernel:



Dec 21 15:23:39 linux pptpd[8513]: CTRL: Client 4.54.51.144 control 
connection s
tarted
Dec 21 15:23:39 linux pptpd[8513]: CTRL: Starting call (launching pppd, 
opening
GRE)
Dec 21 15:23:39 linux pppd[8514]: pppd 2.3.7 started by root, uid 0
Dec 21 15:23:39 linux kernel: ppp_ioctl: set dbg flags to 10000
Dec 21 15:23:39 linux kernel: ppp_ioctl: set flags to 10000
Dec 21 15:23:39 linux kernel: ppp_tty_ioctl: set xasyncmap
Dec 21 15:23:39 linux kernel: ppp_tty_ioctl: set xmit asyncmap ffffffff
Dec 21 15:23:39 linux kernel: ppp_ioctl: set flags to 10000
Dec 21 15:23:39 linux pppd[8514]: Using interface ppp1
Dec 21 15:23:39 linux pppd[8514]: Connect: ppp1 <--> /dev/pts/3
Dec 21 15:23:39 linux kernel: ppp_ioctl: set mru to 5dc
Dec 21 15:23:39 linux kernel: ppp_tty_ioctl: set rcv asyncmap ffffffff
Dec 21 15:23:39 linux kernel: ppp_ioctl: set flags to 10000
Dec 21 15:23:40 linux kernel: ppp: channel ppp1 closing.
Dec 21 15:23:40 linux pptpd[8513]: CTRL: Error with select(), quitting
Dec 21 15:23:40 linux pptpd[8513]: CTRL: Client 4.54.51.144 control 
connection f
inished
Dec 21 15:23:40 linux pppd[8514]: Modem hangup
Dec 21 15:23:40 linux pppd[8514]: Connection terminated.


/etc/ppp/options:

asyncmap 0
lock
local
kdebug 1
debug
name myservername
auth
require-chap
mru 552
mtu 1104
proxyarp

Any help would be apprecited !
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