[pptp-server] Win 98 - error 720 - could not negotiate a compatible set of protocols

[Matthew Pearson]

I had pptpd working fine until I tried to add in authentication and
encryption. I could make a connection via the internet to my pptpd or
alternatively I could do it via my Ethernet. Now I have recompiled the
kernel with support for MSCHAP, I can't get any pptp connection going. Here
is my pptp log file:

Jun 22 14:22:16 homer pptpd[287]: MGR: Max connections reached, extra IP
addresses ignored
Jun 22 14:22:16 homer pptpd[288]: MGR: Manager process started
Jun 22 14:22:48 homer pptpd[291]: MGR: Launching /usr/sbin/pptpctrl to
handle client
Jun 22 14:22:48 homer pptpd[291]: CTRL: local address = 192.168.2.5
Jun 22 14:22:48 homer pptpd[291]: CTRL: remote address = 192.168.3.1
Jun 22 14:22:48 homer pptpd[291]: CTRL: pppd speed = 115200
Jun 22 14:22:48 homer pptpd[291]: CTRL: pppd options file =
/etc/ppp/pptpd.options
Jun 22 14:22:48 homer pptpd[291]: CTRL: Client 192.168.1.37 control
connection started
Jun 22 14:22:48 homer pptpd[291]: CTRL: Received PPTP Control Message (type:
1)
Jun 22 14:22:48 homer pptpd[291]: CTRL: Made a START CTRL CONN RPLY packet
Jun 22 14:22:48 homer pptpd[291]: CTRL: I wrote 156 bytes to the client.
Jun 22 14:22:48 homer pptpd[291]: CTRL: Sent packet to client
Jun 22 14:22:48 homer pptpd[291]: CTRL: Received PPTP Control Message (type:
7)
Jun 22 14:22:48 homer pptpd[291]: CTRL: Set parameters to 0 maxbps, 16
window size
Jun 22 14:22:48 homer pptpd[291]: CTRL: Made a OUT CALL RPLY packet
Jun 22 14:22:48 homer pptpd[291]: CTRL: Starting call (launching pppd,
opening GRE)
Jun 22 14:22:48 homer pptpd[291]: CTRL: pty_fd = 5
Jun 22 14:22:48 homer pptpd[291]: CTRL: tty_fd = 6
Jun 22 14:22:48 homer pptpd[288]: MGR: Reaped child 291
Jun 22 14:22:48 homer pptpd[291]: CTRL: I wrote 32 bytes to the client.
Jun 22 14:22:48 homer pptpd[291]: CTRL: Sent packet to client
Jun 22 14:22:48 homer pptpd[292]: CTRL (PPPD Launcher): Connection speed =
115200
Jun 22 14:22:48 homer pptpd[292]: CTRL (PPPD Launcher): local address =
192.168.2.5
Jun 22 14:22:48 homer pptpd[292]: CTRL (PPPD Launcher): remote address =
192.168.3.1
Jun 22 14:22:48 homer pptpd[291]: CTRL: Received PPTP Control Message (type:
12)
Jun 22 14:22:48 homer pptpd[291]: CTRL: Made a CALL DISCONNECT RPLY packet
Jun 22 14:22:48 homer pptpd[291]: CTRL: Received CALL CLR request (closing
call)
Jun 22 14:22:48 homer pptpd[291]: CTRL: I wrote 148 bytes to the client.
Jun 22 14:22:48 homer pptpd[291]: CTRL: Sent packet to client
Jun 22 14:22:48 homer pptpd[291]: CTRL: Error with select(), quitting
Jun 22 14:22:48 homer pptpd[291]: CTRL: Client 192.168.1.37 control
connection finished
Jun 22 14:22:48 homer pptpd[291]: CTRL: Exiting now

my pptp.options file

debug
name infomatrix.londonweb.net
auth
proxyarp
ms-wins 192.168.1.200
ms-dns  192.168.1.200
+chap
+chapms
+chapms-v2
mppe-40
mppe-128
mppe-stateless

and my pptpd.conf file

############################################################################
####
#
# Sample PoPToP configuration file
#
# for PoPToP version 1.0.0
#
############################################################################
####

# TAG: speed
#
#	Specifies the speed for the PPP daemon to talk at.
#	Some PPP daemons will ignore this value.
#
speed 115200

# TAG: option
#
#	Specifies the location of the PPP options file.
#	By default PPP looks in '/etc/ppp/options'
#
option /etc/ppp/pptpd.options

# TAG: debug
#
#	Turns on (more) debugging to syslog.
#
debug

# TAG: localip
# TAG: remoteip
#
#	Specifies the local and remote IP address ranges.
#
#	You can specify single IP addresses seperated by commas or you can
#	specify ranges, or both. For example:
#
#		192.168.0.234,192.168.0.245-249,192.168.0.254
#
#	IMPORTANT RESTRICTIONS:
#
#	1. No spaces are permitted between commas or within addresses.
#
#	2. If you give more IP addresses than MAX_CONNECTIONS, it will
#	   start at the beginning of the list and go until it gets
#	   MAX_CONNECTIONS IPs. Others will be ignored.
#
#	3. No shortcuts in ranges! ie. 234-8 does not mean 234 to 238,
#	   you must type 234-238 if you mean this.
#
#	4. If you give a single localIP, that's ok - all local IPs will
#	   be set to the given one. You MUST still give at least one remote
#	   IP for each simultaneous client.
#
localip 192.168.2.5
remoteip 192.168.3.1-254

# TAG: ipxnets
#
#	This gives the range of IPX networks to allocate to clients.  By
#	default IPX network number allocation is not handled internally.
#	By putting a low and high network number here a pool of IPX networks
#	can be defined.  If this is done then there must be one IPX network
#	per client.
#
#	The format is a pair of hex numbers without any 0x prefix separated
#	by a hyphen.
#
#ipxnets 00001000-00001FFF

# TAG: listen
#
#	Defines the IP address of the local interface on which pptpd
#	should listen for connections.  The default is to listen on all
#	local interfaces (even ones brought up by pptp connections, thus
#	permitting pptp tunnels inside the pptp tunnels).
#
#listen 192.168.0.1

# TAG: pidfile
#
#	This defines the file name in which pptpd should store its process
#	ID (or pid).  The default is /var/run/pptpd.pid.
#
#pidfile /var/run/pptpd.pid


ppp still works fine for my dial up link to the Internet but I get error 720
whenever I try to connect from my Win 98 machine via the LAN. I get the same
message using Win 98 on aa different machine via the Internet.

I've had a look through the archives and couldn't sort it out. Please can
someone help?

Matt Pearson

mailto://matthew.pearson@infomatrix.ltd.uk
http://www.infomatrix.ltd.uk/