[Samba] Regression of 5616?

Thu Jun 3 11:21:28 MDT 2010

On Thu, Jun 3, 2010 at 11:18 AM, Robert LeBlanc <robert at leblancnet.us>wrote:

> On Wed, Jun 2, 2010 at 5:04 PM, Robert LeBlanc <robert at leblancnet.us>wrote:
>
>> I'm wondering if I'm seeing a regression of 5616 with 3.4.8. I'm trying to
>> set-up pptpd with winbind, which I'm doing on two machines on Debian lenny,
>> and I'm trying on Debian Squeeze now. The Windows client is saying "Error
>> 778: It was not possible to verify the identity of the server." The logs say
>> that everything is ok, and that the client is hanging up the connection. Is
>> something not getting passed correctly like in bug 5616?
>>
>> Jun  2 16:56:05 debian pppd[17472]: pppd 2.4.4 started by root, uid 0
>> Jun  2 16:56:05 debian pppd[17472]: using channel 17
>> Jun  2 16:56:05 debian pppd[17472]: Using interface ppp0
>> Jun  2 16:56:05 debian pppd[17472]: Connect: ppp0 <--> /dev/pts/2
>> Jun  2 16:56:05 debian pppd[17472]: sent [LCP ConfReq id=0x1 <asyncmap
>> 0x0> <auth chap MS-v2> <magic 0xa2912b7> <pcomp> <accomp>]
>> Jun  2 16:56:05 debian pptpd[17470]: GRE: Bad checksum from pppd.
>> Jun  2 16:56:05 debian pppd[17472]: rcvd [LCP ConfReq id=0x0 <mru 1400>
>> <magic 0x648b71fd> <pcomp> <accomp> <callback CBCP>]
>> Jun  2 16:56:05 debian pppd[17472]: sent [LCP ConfRej id=0x0 <callback
>> CBCP>]
>> Jun  2 16:56:05 debian pppd[17472]: rcvd [LCP ConfAck id=0x1 <asyncmap
>> 0x0> <auth chap MS-v2> <magic 0xa2912b7> <pcomp> <accomp>]
>> Jun  2 16:56:05 debian pppd[17472]: rcvd [LCP ConfReq id=0x1 <mru 1400>
>> <magic 0x648b71fd> <pcomp> <accomp>]
>> Jun  2 16:56:05 debian pppd[17472]: sent [LCP ConfAck id=0x1 <mru 1400>
>> <magic 0x648b71fd> <pcomp> <accomp>]
>> Jun  2 16:56:05 debian pppd[17472]: sent [LCP EchoReq id=0x0
>> magic=0xa2912b7]
>> Jun  2 16:56:05 debian pppd[17472]: sent [CHAP Challenge id=0x75
>> <d33a4de16233bb406c42b02c9801acd4>, name = "debian"]
>> Jun  2 16:56:05 debian pppd[17472]: rcvd [LCP Ident id=0x2
>> magic=0x648b71fd "MSRASV5.10"]
>> Jun  2 16:56:05 debian pppd[17472]: rcvd [LCP Ident id=0x3
>> magic=0x648b71fd "MSRAS-0-WINCOMP"]
>> Jun  2 16:56:05 debian pppd[17472]: rcvd [LCP EchoRep id=0x0
>> magic=0x648b71fd]
>> Jun  2 16:56:05 debian pppd[17472]: rcvd [CHAP Response id=0x75
>> <69dbcaab0e152ea056654a46c4ca7bae00000000000000006d7bcc32ef97cfafde7c34570aaa0c55e83b8475da22923300>,
>> name = "DOMAIN\\user"]
>> Jun  2 16:56:05 debian pptpd[17470]: CTRL: Ignored a SET LINK INFO packet
>> with real ACCMs!
>> Jun  2 16:56:05 debian pppd[17472]: sent [CHAP Success id=0x75
>> "S=B68D646C4DC626290C5BCD1148AE833C004B1E70 M=Access granted"]
>> Jun  2 16:56:05 debian pppd[17472]: sent [CCP ConfReq id=0x1 <mppe +H -M
>> +S -L -D -C>]
>> Jun  2 16:56:05 debian pppd[17472]: rcvd [LCP TermReq id=0x4
>> "d\37777777613q\37777777775\000<\37777777715t\000\000\003\n"]
>> Jun  2 16:56:05 debian pppd[17472]: LCP terminated by peer
>> (dM-^KqM-}^@<M-Mt^@^@^C^J)
>> Jun  2 16:56:05 debian pppd[17472]: sent [LCP TermAck id=0x4]
>> Jun  2 16:56:05 debian pptpd[17470]: CTRL: Reaping child PPP[17472]
>> Jun  2 16:56:05 debian pppd[17472]: Modem hangup
>> Jun  2 16:56:05 debian pppd[17472]: Connection terminated.
>> Jun  2 16:56:05 debian pppd[17472]: Connect time 0.0 minutes.
>> Jun  2 16:56:05 debian pppd[17472]: Sent 10 bytes, received 0 bytes.
>> Jun  2 16:56:06 debian pppd[17472]: Exit.
>>
>> Any ideas? I'm not sure what else to try, I'm coming up empty handed with
>> Google.
>>
>>
> I forgot to try this using chap_secrets and include that. When using
> chap_secrets I can log in and everything works as expected. When I include
> the winbind.so plug-in, I can't login. Here is the logs from a sucessful
> PPTP connection using chap_secrets.
>
> Jun  3 11:10:35 debian pppd[17826]: Connect: ppp0 <--> /dev/pts/1
> Jun  3 11:10:35 debian pppd[17826]: sent [LCP ConfReq id=0x1 <asyncmap 0x0>
> <auth chap MS-v2> <magic 0x122bc19f> <pcomp> <accomp>]
> Jun  3 11:10:35 debian pptpd[17825]: GRE: Bad checksum from pppd.
> Jun  3 11:10:35 debian pppd[17826]: rcvd [LCP ConfReq id=0x0 <mru 1400>
> <magic 0x1f614592> <pcomp> <accomp> <callback CBCP>]
> Jun  3 11:10:35 debian pppd[17826]: sent [LCP ConfRej id=0x0 <callback
> CBCP>]
> Jun  3 11:10:35 debian pppd[17826]: rcvd [LCP ConfReq id=0x1 <mru 1400>
> <magic 0x1f614592> <pcomp> <accomp>]
> Jun  3 11:10:35 debian pppd[17826]: sent [LCP ConfAck id=0x1 <mru 1400>
> <magic 0x1f614592> <pcomp> <accomp>]
> Jun  3 11:10:38 debian pppd[17826]: sent [LCP ConfReq id=0x1 <asyncmap 0x0>
> <auth chap MS-v2> <magic 0x122bc19f> <pcomp> <accomp>]
> Jun  3 11:10:38 debian pptpd[17825]: CTRL: Ignored a SET LINK INFO packet
> with real ACCMs!
> Jun  3 11:10:38 debian pppd[17826]: rcvd [LCP ConfAck id=0x1 <asyncmap 0x0>
> <auth chap MS-v2> <magic 0x122bc19f> <pcomp> <accomp>]
> Jun  3 11:10:38 debian pppd[17826]: sent [LCP EchoReq id=0x0
> magic=0x122bc19f]
> Jun  3 11:10:38 debian pppd[17826]: sent [CHAP Challenge id=0xb6
> <ee0fbc4ca5a3cecbb50d6a5d681dfceb>, name = "debian"]
> Jun  3 11:10:38 debian pppd[17826]: rcvd [LCP Ident id=0x2 magic=0x1f614592
> "MSRASV5.10"]
> Jun  3 11:10:38 debian pppd[17826]: rcvd [LCP Ident id=0x3 magic=0x1f614592
> "MSRAS-0-WINCOMP"]
> Jun  3 11:10:38 debian pppd[17826]: rcvd [LCP EchoRep id=0x0
> magic=0x1f614592]
> Jun  3 11:10:38 debian pppd[17826]: rcvd [CHAP Response id=0xb6
> <4d9f569d005db37bc1a3fd0475dd288f0000000000000000f7a35e82608b4ba7e6137ef1dbd642f03341be46e2c763bf00>,
> name = "chap_user"]
> Jun  3 11:10:38 debian pppd[17826]: sent [CHAP Success id=0xb6
> "S=5BB1A4A6F2B0B1915352569321C0E90C7F2D0A50 M=Access granted"]
> Jun  3 11:10:38 debian pppd[17826]: sent [CCP ConfReq id=0x1 <mppe +H -M +S
> -L -D -C>]
> Jun  3 11:10:38 debian pppd[17826]: rcvd [CCP ConfReq id=0x4 <mppe +H +M +S
> +L -D +C>]
> Jun  3 11:10:38 debian pppd[17826]: sent [CCP ConfNak id=0x4 <mppe +H -M +S
> -L -D -C>]
> Jun  3 11:10:38 debian pppd[17826]: rcvd [IPCP ConfReq id=0x5 <addr
> 0.0.0.0> <ms-dns1 0.0.0.0> <ms-wins 0.0.0.0> <ms-dns3 0.0.0.0> <ms-wins
> 0.0.0.0>]
> Jun  3 11:10:38 debian pppd[17826]: sent [IPCP TermAck id=0x5]
> Jun  3 11:10:38 debian pppd[17826]: rcvd [CCP ConfAck id=0x1 <mppe +H -M +S
> -L -D -C>]
> Jun  3 11:10:38 debian pppd[17826]: rcvd [CCP ConfReq id=0x6 <mppe +H -M +S
> -L -D -C>]
> Jun  3 11:10:38 debian pppd[17826]: sent [CCP ConfAck id=0x6 <mppe +H -M +S
> -L -D -C>]
> Jun  3 11:10:38 debian pppd[17826]: MPPE 128-bit stateless compression
> enabled
> Jun  3 11:10:38 debian pppd[17826]: sent [IPCP ConfReq id=0x1 <compress VJ
> 0f 01> <addr 192.168.54.1>]
> Jun  3 11:10:38 debian pppd[17826]: rcvd [IPCP ConfRej id=0x1 <compress VJ
> 0f 01>]
> Jun  3 11:10:38 debian pppd[17826]: sent [IPCP ConfReq id=0x2 <addr
> 192.168.54.1>]
> Jun  3 11:10:38 debian pppd[17826]: rcvd [IPCP ConfAck id=0x2 <addr
> 192.168.54.1>]
> Jun  3 11:10:40 debian pppd[17826]: rcvd [IPCP ConfReq id=0x7 <addr
> 0.0.0.0> <ms-dns1 0.0.0.0> <ms-wins 0.0.0.0> <ms-dns3 0.0.0.0> <ms-wins
> 0.0.0.0>]
> Jun  3 11:10:40 debian pppd[17826]: sent [IPCP ConfRej id=0x7 <ms-dns1
> 0.0.0.0> <ms-wins 0.0.0.0> <ms-dns3 0.0.0.0> <ms-wins 0.0.0.0>]
> Jun  3 11:10:40 debian pppd[17826]: rcvd [IPCP ConfReq id=0x8 <addr
> 0.0.0.0>]
> Jun  3 11:10:40 debian pppd[17826]: sent [IPCP ConfNak id=0x8 <addr
> 192.168.54.181>]
> Jun  3 11:10:40 debian pppd[17826]: rcvd [IPCP ConfReq id=0x9 <addr
> 192.168.54.181>]
> Jun  3 11:10:40 debian pppd[17826]: sent [IPCP ConfAck id=0x9 <addr
> 192.168.54.181>]
> Jun  3 11:10:40 debian pppd[17826]: found interface eth0.69 for proxy arp
> Jun  3 11:10:40 debian pppd[17826]: local  IP address 192.168.54.1
> Jun  3 11:10:40 debian pppd[17826]: remote IP address 192.168.54.181
> Jun  3 11:10:40 debian pppd[17826]: pptpd-logwtmp.so ip-up ppp0 chap_user
> x.x.x.x
> Jun  3 11:10:40 debian pppd[17826]: Script /etc/ppp/ip-up started (pid
> 17829)
> Jun  3 11:10:40 debian pppd[17826]: Script /etc/ppp/ip-up finished (pid
> 17829), status = 0x0
>
> I did a tcpdump of the failing PPTP session and I could not find any useful
> information, I can send that to a dev if needed.
>
> Thanks,
>

Sorry, one more thing, I downloaded the source for the Debian package I'm
using and it does have the patch mentioned in 5616. I wonder if something
else changed that may be causing this regression.

Thanks,

Robert LeBlanc
Life Sciences & Undergraduate Education Computer Support
Brigham Young University