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Old 12-03-2003, 12:19 PM   #1
hilltop*Tech
LQ Newbie
 
Registered: May 2003
Posts: 18

Rep: Reputation: 0
Question Problems enabling MPPE Encryption using Redhat 9, Poptop and ppp-2.4.2-0.1b3


I have a RedHat 9 installation running kernel version 2.4.20-20.9smp (from kernel-mppe-2.4.20-20.9smp.rpm). I have installed ppp-2.4.2-0.1b3 and Poptop 1.1.4. I have successfully been able to connect from a Windows 2k machine as long as encrytion is turned off.

Any suggestions would be appreciated. This is a time sensitive project, and without encrytion we'll have to scrap the project.

Thanks,

Allan

Here is some output of various files:

-----------------------------------------------------------------------------------------

/sbin/lsmod
Module Size Used by Tainted: P
ip_gre 11328 0 (unused)
ppp_deflate 4504 0 (autoclean)
zlib_deflate 21560 0 (autoclean) [ppp_deflate]
ppp_mppe 13944 0 (autoclean)
ppp_async 9888 0 (autoclean)
ppp_generic 27552 4 (autoclean) [ppp_deflate ppp_mppe ppp_async]
slhc 6844 0 (autoclean) [ppp_generic]
autofs 13684 0 (autoclean) (unused)
tulip 44544 1
ext3 73376 3
jbd 56368 3 [ext3]
sym53c8xx 68688 0 (unused)
cpqarray 24612 4
sd_mod 13452 0 (unused)
scsi_mod 110872 2 [sym53c8xx sd_mod]

-----------------------------------------------------------------------------------------
/etc/ppp/options.pptpd
lock
dump
logfile /var/log/poptop

auth

-mschap
+mschap-v2

mtu 1450
mru 1450
ipcp-accept-local
ipcp-accept-remote
lcp-echo-failure 3
lcp-echo-interval 5

ms-wins 10.1.1.20
ms-dns 10.1.1.20
require-mppe-128

-----------------------------------------------------------------------------------------

/var/log/messages

Dec 3 11:46:36 nhclvpnsrv pppd[4064]: pppd options in effect:
Dec 3 11:46:36 nhclvpnsrv pppd[4064]: logfile /var/log/poptop^I^I# (from /etc/ppp/options.pptpd)
Dec 3 11:46:36 nhclvpnsrv pppd[4064]: dump^I^I# (from /etc/ppp/options.pptpd)
Dec 3 11:46:36 nhclvpnsrv pppd[4064]: +mschap-v2^I^I# (from /etc/ppp/options.pptpd)
Dec 3 11:46:36 nhclvpnsrv pppd[4064]: -mschap^I^I# (from /etc/ppp/options.pptpd)
Dec 3 11:46:36 nhclvpnsrv pppd[4064]: 115200^I^I# (from command line)
Dec 3 11:46:36 nhclvpnsrv pppd[4064]: lock^I^I# (from /etc/ppp/options.pptpd)
Dec 3 11:46:36 nhclvpnsrv pppd[4064]: local^I^I# (from command line)
Dec 3 11:46:36 nhclvpnsrv pppd[4064]: mru 1450^I^I# (from /etc/ppp/options.pptpd)
Dec 3 11:46:36 nhclvpnsrv pppd[4064]: mtu 1450^I^I# (from /etc/ppp/options.pptpd)
Dec 3 11:46:36 nhclvpnsrv pppd[4064]: lcp-echo-failure 3^I^I# (from /etc/ppp/options.pptpd)
Dec 3 11:46:36 nhclvpnsrv pppd[4064]: lcp-echo-interval 5^I^I# (from /etc/ppp/options.pptpd)
Dec 3 11:46:36 nhclvpnsrv pppd[4064]: ipcp-accept-local^I^I# (from /etc/ppp/options.pptpd)
Dec 3 11:46:36 nhclvpnsrv pppd[4064]: ipcp-accept-remote^I^I# (from /etc/ppp/options.pptpd)
Dec 3 11:46:36 nhclvpnsrv pppd[4064]: ms-dns xxx # [don't know how to print value]^I^I# (from /etc/ppp/options.pptpd)
Dec 3 11:46:36 nhclvpnsrv pppd[4064]: ms-wins xxx # [don't know how to print value]^I^I# (from /etc/ppp/options.pptpd)
Dec 3 11:46:36 nhclvpnsrv pppd[4064]: 10.1.1.183:10.1.1.240^I^I# (from command line)
Dec 3 11:46:36 nhclvpnsrv pppd[4064]: nobsdcomp^I^I# (from /etc/ppp/options)
Dec 3 11:46:36 nhclvpnsrv pppd[4064]: require-mppe-128^I^I# (from /etc/ppp/options.pptpd)
Dec 3 11:46:36 nhclvpnsrv pppd[4064]: pppd 2.4.2b3 started by root, uid 0
Dec 3 11:46:36 nhclvpnsrv pppd[4064]: Using interface ppp2
Dec 3 11:46:36 nhclvpnsrv pppd[4064]: Connect: ppp2 <--> /dev/pts/6
Dec 3 11:46:36 nhclvpnsrv pptpd[4063]: GRE: Discarding duplicate packet
Dec 3 11:46:36 nhclvpnsrv /etc/hotplug/net.agent: assuming ppp2 is already up
Dec 3 11:46:38 nhclvpnsrv pptpd[4063]: CTRL: Ignored a SET LINK INFO packet with real ACCMs!
Dec 3 11:46:38 nhclvpnsrv pppd[4064]: CHAP peer authentication succeeded for allan
Dec 3 11:46:38 nhclvpnsrv pppd[4064]: MPPE required but peer negotiation failed
Dec 3 11:46:38 nhclvpnsrv pppd[4064]: Modem hangup
Dec 3 11:46:38 nhclvpnsrv pppd[4064]: Connection terminated.
Dec 3 11:46:38 nhclvpnsrv pppd[4064]: Connect time 0.1 minutes.
Dec 3 11:46:38 nhclvpnsrv pppd[4064]: Sent 10 bytes, received 54 bytes.
Dec 3 11:46:38 nhclvpnsrv pptpd[4063]: CTRL: Client 10.1.1.49 control connection finished
Dec 3 11:46:38 nhclvpnsrv pppd[4064]: Terminating on signal 2.
Dec 3 11:46:38 nhclvpnsrv pppd[4064]: Connect time 0.1 minutes.
Dec 3 11:46:38 nhclvpnsrv pppd[4064]: Sent 10 bytes, received 54 bytes.
Dec 3 11:46:38 nhclvpnsrv pppd[4064]: Exit.
Dec 3 11:46:38 nhclvpnsrv /etc/hotplug/net.agent: NET unregister event not supported

-----------------------------------------------------------------------------------------
/var/log/poptop

pppd options in effect:
logfile /var/log/poptop # (from /etc/ppp/options.pptpd)
dump # (from /etc/ppp/options.pptpd)
+mschap-v2 # (from /etc/ppp/options.pptpd)
-mschap # (from /etc/ppp/options.pptpd)
115200 # (from command line)
lock # (from /etc/ppp/options.pptpd)
local # (from command line)
mru 1450 # (from /etc/ppp/options.pptpd)
mtu 1450 # (from /etc/ppp/options.pptpd)
lcp-echo-failure 3 # (from /etc/ppp/options.pptpd)
lcp-echo-interval 5 # (from /etc/ppp/options.pptpd)
ipcp-accept-local # (from /etc/ppp/options.pptpd)
ipcp-accept-remote # (from /etc/ppp/options.pptpd)
ms-dns xxx # [don't know how to print value] # (from /etc/ppp/options.pptpd)
ms-wins xxx # [don't know how to print value] # (from /etc/ppp/options.pptpd)
10.1.1.183:10.1.1.240 # (from command line)
nobsdcomp # (from /etc/ppp/options)
require-mppe-128 # (from /etc/ppp/options.pptpd)
Using interface ppp2
Connect: ppp2 <--> /dev/pts/6
CHAP peer authentication succeeded for allan
MPPE required but peer negotiation failed
Modem hangup
Connection terminated.
Connect time 0.1 minutes.
Sent 10 bytes, received 54 bytes.
Terminating on signal 2.
Connect time 0.1 minutes.
Sent 10 bytes, received 54 bytes.
 
Old 12-05-2003, 12:28 AM   #2
ugob
Member
 
Registered: Nov 2003
Distribution: RH, Fedora, Debian, Knoppix
Posts: 436

Rep: Reputation: 31
Maybe take a look here http://ccfaq.valar.co.uk/modules.php...rticle&sid=188
 
Old 12-05-2003, 05:09 AM   #3
hilltop*Tech
LQ Newbie
 
Registered: May 2003
Posts: 18

Original Poster
Rep: Reputation: 0
Thanks, I actually have figured it out.
 
Old 12-05-2003, 07:56 AM   #4
ugob
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Registered: Nov 2003
Distribution: RH, Fedora, Debian, Knoppix
Posts: 436

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It would be nice to hear the solution from you then
 
Old 12-05-2003, 11:16 AM   #5
hilltop*Tech
LQ Newbie
 
Registered: May 2003
Posts: 18

Original Poster
Rep: Reputation: 0
Since I already had chapms-v2 already working and turning off encryption all together worked correctly. I found that ppp is compiled with only 128 bit encryption and would need to be compiled if 40 bit was needed. So, I set the Microsoft VPN client to maximum encryption and gave it a try...

It Worked
 
  


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