[pptp-server] Error 741 - The local computer does not support the required data encryption type.

hvrietsc at yahoo.com hvrietsc at yahoo.com
Fri Nov 2 22:33:57 CST 2001


yes you need build a few more kernel modules as instructed, ppp-mpe-40
and 128 come to mind, without those your pptpd wont do encryption.

On Fri, Nov 02, 2001 at 11:01:04PM -0500, mike wrote:
> I imagine somebody else must have seen this at some point.. I installed 
> PoPToP onto my Red Hat 7.1 server, and am connecting to it with a Win2K 
> box.  Sans encryption, it works fine.  With encryption required by the 
> Win2K box, it gives me this error: "Error 741 - The local computer does not 
> support the required data encryption type."  (log activity below)
> 
> This leads me to believe that something is missing from the W2K box, so I 
> was sure to upgrade to 128-bit encryption (I found the link somewhere in 
> the archives).  Afterwards, it still fails.
> 
> Perhaps my pppd simply doesn't have the encryption support?  Surprisingly, 
> every reference I can seem to find about patching ppp wants me to download 
> the source, patch it, and build it into the kernel (no thanks) and the 
> links to the patched files all seem to be dead.  Is there a place to 
> download the source just for the ms-chap2 module, or a similar solution?
> 
> Any help is much appreciated.
> 
> --mike
> 
> 
> Nov  2 22:34:36 gonzo pptpd[25341]: CTRL: Client 192.168.1.18 control 
> connection started
> Nov  2 22:34:36 gonzo pptpd[25341]: CTRL: Starting call (launching pppd, 
> opening GRE)
> Nov  2 22:34:36 gonzo pppd[25342]: pppd 2.4.0 started by root, uid 0
> Nov  2 22:34:36 gonzo pppd[25342]: using channel 5
> Nov  2 22:34:36 gonzo pppd[25342]: Using interface ppp0
> Nov  2 22:34:36 gonzo pppd[25342]: Connect: ppp0 <--> /dev/pts/2
> Nov  2 22:34:36 gonzo pppd[25342]: sent [LCP ConfReq id=0x1 <asyncmap 0x0> 
> <auth chap MD5> <magic 0x97173a53> <pcomp> <accomp>]
> Nov  2 22:34:36 gonzo pptpd[25341]: GRE: Discarding duplicate packet
> Nov  2 22:34:38 gonzo pppd[25342]: rcvd [LCP ConfReq id=0x1 <magic 
> 0x44663962> <pcomp> <accomp> <callback CBCP> <mrru 1614> <endpoint 
> [local:f0.81.61.69.8f.fe.4d.23.85.3d.d7.85.b3.27.90.65.00.00.00.08]>]
> Nov  2 22:34:38 gonzo pppd[25342]: sent [LCP ConfRej id=0x1 <callback CBCP> 
> <mrru 1614>]
> Nov  2 22:34:38 gonzo pppd[25342]: rcvd [LCP ConfReq id=0x2 <magic 
> 0x44663962> <pcomp> <accomp> <endpoint 
> [local:f0.81.61.69.8f.fe.4d.23.85.3d.d7.85.b3.27.90.65.00.00.00.08]>]
> Nov  2 22:34:38 gonzo pppd[25342]: sent [LCP ConfAck id=0x2 <magic 
> 0x44663962> <pcomp> <accomp> <endpoint 
> [local:f0.81.61.69.8f.fe.4d.23.85.3d.d7.85.b3.27.90.65.00.00.00.08]>]
> Nov  2 22:34:39 gonzo pppd[25342]: sent [LCP ConfReq id=0x1 <asyncmap 0x0> 
> <auth chap MD5> <magic 0x97173a53> <pcomp> <accomp>]
> Nov  2 22:34:39 gonzo pppd[25342]: rcvd [LCP ConfNak id=0x1 <auth chap 81>]
> Nov  2 22:34:39 gonzo pppd[25342]: sent [LCP ConfReq id=0x2 <asyncmap 0x0> 
> <magic 0x97173a53> <pcomp> <accomp>]
> Nov  2 22:34:39 gonzo pppd[25342]: rcvd [LCP ConfAck id=0x2 <asyncmap 0x0> 
> <magic 0x97173a53> <pcomp> <accomp>]
> Nov  2 22:34:39 gonzo pppd[25342]: peer refused to authenticate: 
> terminating link
> Nov  2 22:34:39 gonzo pppd[25342]: sent [LCP TermReq id=0x3 "peer refused 
> to authenticate"]
> Nov  2 22:34:39 gonzo pptpd[25341]: CTRL: Ignored a SET LINK INFO packet 
> with real ACCMs!
> Nov  2 22:34:39 gonzo pptpd[25341]: CTRL: Ignored a SET LINK INFO packet 
> with real ACCMs!
> Nov  2 22:34:39 gonzo pppd[25342]: rcvd [LCP code=0xc id=0x3 44 66 39 62 4d 
> 53 52 41 53 56 35 2e 30 30]
> Nov  2 22:34:39 gonzo pppd[25342]: sent [LCP CodeRej id=0x4 0c 03 00 12 44 
> 66 39 62 4d 53 52 41 53 56 35 2e 30 30]
> Nov  2 22:34:39 gonzo pppd[25342]: rcvd [LCP code=0xc id=0x4 44 66 39 62 4d 
> 53 52 41 53 2d 31 2d 4b 45 52 4d 49 54]
> Nov  2 22:34:39 gonzo pppd[25342]: sent [LCP CodeRej id=0x5 0c 04 00 16 44 
> 66 39 62 4d 53 52 41 53 2d 31 2d 4b 45 52 4d 49 54]
> Nov  2 22:34:39 gonzo pppd[25342]: rcvd [LCP TermAck id=0x3 "peer refused 
> to authenticate"]
> Nov  2 22:34:39 gonzo pppd[25342]: Connection terminated.
> Nov  2 22:34:39 gonzo pptpd[25341]: CTRL: Error with select(), quitting
> Nov  2 22:34:39 gonzo pppd[25342]: tcflush failed: Input/output error
> Nov  2 22:34:39 gonzo pptpd[25341]: CTRL: Client 192.168.1.18 control 
> connection finished
> Nov  2 22:34:39 gonzo pppd[25342]: Exit.
> 
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