Re: lug-bg: Problem pri opit za vryzka s VPN (WindowsXP) kym pptpd (Linux Debian)

[Dean Stoeff <dean@xxxxxxxxxxxx>]

Martin Kolev wrote:

> Zdraveite,
>
> imam problem pri opit da napravia VPN vryzka ot WindowsXP mashina ot
> proizvolna mreza s Point to Point Tunneling Server ot druga mreza, koito
> raboti pod Linux Debian s kernel 2.4.19
>
> s tcpdump se vizda tova:
>
> 10:47:30.945073 WindowsXP.3252 > Linux(Debian).1723: S
> 3243769173:3243769173(0) win 64240 <mss 1452,nop,nop,sackOK> (DF) [tos 0x60]
> 10:47:30.945149 Linux(Debian).1723 > WindowsXP.3252: S
> 1076575185:1076575185(0) ack 3243769174 win 5808 <mss 1452,nop,nop,sackOK>
> (DF)
> 10:47:31.377194 WindowsXP.3252 > Linux(Debian).1723: P 1:157(156) ack 1 win
> 65340 (DF) [tos 0x60]
> 10:47:31.377290 Linux(Debian).1723 > WindowsXP.3252: . ack 157 win 5808 (DF)
> 10:47:31.381486 Linux(Debian).1723 > WindowsXP.3252: P 1:157(156) ack 157
> win 5808 (DF)
> 10:47:31.744006 WindowsXP.3252 > Linux(Debian).1723: P 157:325(168) ack 157
> win 65184 (DF) [tos 0x60]
> 10:47:31.745281 Linux(Debian).1723 > WindowsXP.3252: P 157:189(32) ack 325
> win 6432 (DF)
> 10:47:31.758510 Linux(Debian) > WindowsXP: gre-proto-0x880B (gre encap)
> 10:47:31.931348 WindowsXP.3252 > Linux(Debian).1723: P 325:349(24) ack 189
> win 65152 (DF) [tos 0x60]
> 10:47:31.971107 Linux(Debian).1723 > WindowsXP.3252: . ack 349 win 6432 (DF)
> 10:47:34.761168 Linux(Debian) > WindowsXP: gre-proto-0x880B (gre encap)
> 10:47:37.771127 Linux(Debian) > WindowsXP: gre-proto-0x880B (gre encap)
> 10:47:40.781091 Linux(Debian) > WindowsXP: gre-proto-0x880B (gre encap)
> 10:47:43.791051 Linux(Debian) > WindowsXP: gre-proto-0x880B (gre encap)
> 10:47:46.801023 Linux(Debian) > WindowsXP: gre-proto-0x880B (gre encap)
> 10:47:49.810965 Linux(Debian) > WindowsXP: gre-proto-0x880B (gre encap)
> 10:47:52.820937 Linux(Debian) > WindowsXP: gre-proto-0x880B (gre encap)
> 10:47:55.830893 Linux(Debian) > WindowsXP: gre-proto-0x880B (gre encap)
> 10:47:58.840856 Linux(Debian) > WindowsXP: gre-proto-0x880B (gre encap)
> 10:48:01.852283 Linux(Debian).1723 > WindowsXP.3252: F 189:189(0) ack 349
> win 6432 (DF)
> 10:48:02.900712 Linux(Debian).1723 > WindowsXP.3252: F 189:189(0) ack 349
> win 6432 (DF)
> 10:48:03.017214 WindowsXP.3252 > Linux(Debian).1723: F 349:349(0) ack 190
> win 65152 (DF) [tos 0x60]
> 10:48:03.017306 Linux(Debian).1723 > WindowsXP.3252: . ack 350 win 6432 (DF)
> 10:48:03.503305 WindowsXP.3252 > Linux(Debian).1723: . ack 190 win 65152
> (DF) [tos 0x60]
>
> Ima li niakoi ideia zashto i kakva e prichinata da ne se cannect-vat dvete
> mashini?
>
> P.S. WindowsXP i Linux(Debian) ne polzvat firewall i sa s realni IP-ta
>  
Ами пусни и малко debug на pptpd  и виж каква е прицината да прекъсва 
възката
една от най-вероятните прицини е да не си с пачнато ядро и pppd  за MPPE 
а по default
WinXP иска и data тунела да е криптиран

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