linux – pppd“同行拒绝认证”

概述我有一个正在运行的pptpd pppd服务器,它目前有两个成功连接的 Windows 7客户端.但是,当我尝试连接一个 Linux客户端时,我得到一个非常奇怪的交换,以服务器端和客户端端的“peer refused authenticate”结尾. 这是来自服务器的日志： pppd[8205]: using channel 51pppd[8205]: sent [LCP ConfReq id=0 我有一个正在运行的pptpd pppd服务器,它目前有两个成功连接的 Windows 7客户端.但是,当我尝试连接一个 Linux客户端时,我得到一个非常奇怪的交换,以服务器端和客户端端的“peer refused authenticate”结尾.

这是来自服务器的日志：

pppd[8205]: using channel 51pppd[8205]: sent [LCP ConfReq ID=0x1 <asyncmap 0x0> <auth chap MS-v2> <magic 0x20b0750f> <pcomp> <accomp>]pppd[8205]: rcvd [LCP ConfRej ID=0x1 <auth chap MS-v2>]pppd[8205]: sent [LCP ConfReq ID=0x2 <asyncmap 0x0> <magic 0x20b0750f> <pcomp> <accomp>]pppd[8205]: rcvd [LCP ConfAck ID=0x2 <asyncmap 0x0> <magic 0x20b0750f> <pcomp> <accomp>]pppd[8205]: rcvd [LCP ConfReq ID=0x1 <asyncmap 0x0> <auth chap MS-v2> <magic 0x23d6bed3> <pcomp> <accomp>]pppd[8205]: sent [LCP ConfNak ID=0x1 <auth pap>]pppd[8205]: rcvd [LCP ConfReq ID=0x2 <asyncmap 0x0> <magic 0x23d6bed3> <pcomp> <accomp>]pppd[8205]: sent [LCP ConfAck ID=0x2 <asyncmap 0x0> <magic 0x23d6bed3> <pcomp> <accomp>]pppd[8205]: sent [LCP EchoReq ID=0x0 magic=0x20b0750f]pppd[8205]: sent [LCP TermReq ID=0x3 "peer refused to authenticate"]pppd[8205]: rcvd [LCP EchoReq ID=0x0 magic=0x23d6bed3]pppd[8205]: rcvd [LCP TermReq ID=0x3 "peer refused to authenticate"]pppd[8205]: sent [LCP TermAck ID=0x3]pppd[8205]: rcvd [LCP TermAck ID=0x3]pptpd[8204]: CTRL: ReaPing child PPP[8205]

这是来自客户端的日志：

pppd[12077]: pppd options in effect:pppd[12077]: deBUG               # (from command line)pppd[12077]: holdoff 10          # (from /etc/ppp/peers/home1)pppd[12077]: persist             # (from /etc/ppp/peers/home1)pppd[12077]: dump                # (from command line)pppd[12077]: require-mschap-v2           # (from /etc/ppp/peers/home1)pppd[12077]: refuse-pap          # (from /etc/ppp/peers/home1)pppd[12077]: refuse-mschap               # (from /etc/ppp/peers/home1)pppd[12077]: name <redacted>          # (from /etc/ppp/peers/home1)pppd[12077]: remotename <redacted>             # (from /etc/ppp/peers/home1)pppd[12077]:             # (from /etc/ppp/options)pppd[12077]: pty pptp <redacted> --nolaunchpppd                # (from /etc/ppp/peers/home1)pppd[12077]: crtscts             # (from /etc/ppp/options)pppd[12077]:             # (from /etc/ppp/options)pppd[12077]: asyncmap 0          # (from /etc/ppp/options)pppd[12077]: lcp-echo-failure 4          # (from /etc/ppp/options)pppd[12077]: lcp-echo-interval 30                # (from /etc/ppp/options)pppd[12077]: hIDe-password               # (from /etc/ppp/options)pppd[12077]: proxyarp            # (from /etc/ppp/options)pppd[12077]: nobsdcomp           # (from /etc/ppp/peers/home1)pppd[12077]: nodeflate           # (from /etc/ppp/peers/home1)pppd[12077]: nomppe              # (from /etc/ppp/peers/home1)pppd[12077]: noipx               # (from /etc/ppp/options)pppd[12078]: pppd 2.4.5 started by <redacted>,uID 0pppd[12078]: using channel 12pppd[12078]: Using interface ppp0pppd[12078]: Connect: ppp0 <--> /dev/pts/14pptp[12079]: anon log[main:pptp.c:314]: The synchronous pptp option is NOT activatedpptp[12086]: anon log[ctrlp_rep:pptp_ctrl.c:251]: Sent control packet type is 1 'Start-Control-Connection-Request'pptp[12086]: anon log[ctrlp_disp:pptp_ctrl.c:739]: Received Start Control Connection Replypptp[12086]: anon log[ctrlp_disp:pptp_ctrl.c:773]: ClIEnt connection established.pppd[12078]: sent [LCP ConfReq ID=0x1 <asyncmap 0x0> <auth chap MS-v2> <magic 0x23d6bed3> <pcomp> <accomp>]pptp[12086]: anon log[ctrlp_rep:pptp_ctrl.c:251]: Sent control packet type is 7 'Outgoing-Call-Request'pptp[12086]: anon log[ctrlp_disp:pptp_ctrl.c:858]: Received Outgoing Call Reply.pptp[12086]: anon log[ctrlp_disp:pptp_ctrl.c:897]: Outgoing call established (call ID 0,peer's call ID 1920).pppd[12078]: rcvd [LCP ConfReq ID=0x1 <asyncmap 0x0> <auth chap MS-v2> <magic 0x20b0750f> <pcomp> <accomp>]pppd[12078]: No auth is possiblepppd[12078]: sent [LCP ConfRej ID=0x1 <auth chap MS-v2>]pppd[12078]: rcvd [LCP ConfReq ID=0x2 <asyncmap 0x0> <magic 0x20b0750f> <pcomp> <accomp>]pppd[12078]: sent [LCP ConfAck ID=0x2 <asyncmap 0x0> <magic 0x20b0750f> <pcomp> <accomp>]pppd[12078]: sent [LCP ConfReq ID=0x1 <asyncmap 0x0> <auth chap MS-v2> <magic 0x23d6bed3> <pcomp> <accomp>]pppd[12078]: rcvd [LCP ConfNak ID=0x1 <auth pap>]pppd[12078]: sent [LCP ConfReq ID=0x2 <asyncmap 0x0> <magic 0x23d6bed3> <pcomp> <accomp>]pppd[12078]: rcvd [LCP ConfAck ID=0x2 <asyncmap 0x0> <magic 0x23d6bed3> <pcomp> <accomp>]pppd[12078]: sent [LCP EchoReq ID=0x0 magic=0x23d6bed3]pppd[12078]: peer refused to authenticate: terminating linkpppd[12078]: sent [LCP TermReq ID=0x3 "peer refused to authenticate"]pppd[12078]: rcvd [LCP EchoReq ID=0x0 magic=0x20b0750f]pppd[12078]: rcvd [LCP TermReq ID=0x3 "peer refused to authenticate"]pppd[12078]: sent [LCP TermAck ID=0x3]pppd[12078]: rcvd [LCP TermAck ID=0x3]pppd[12078]: Connection terminated.

我对这些行感到困惑(来自服务器日志)：

pppd[8205]: sent [LCP ConfReq ID=0x1 <asyncmap 0x0> <auth chap MS-v2> <magic 0x20b0750f> <pcomp> <accomp>]pppd[8205]: rcvd [LCP ConfRej ID=0x1 <auth chap MS-v2>]pppd[8205]: sent [LCP ConfReq ID=0x2 <asyncmap 0x0> <magic 0x20b0750f> <pcomp> <accomp>]pppd[8205]: rcvd [LCP ConfAck ID=0x2 <asyncmap 0x0> <magic 0x20b0750f> <pcomp> <accomp>]pppd[8205]: rcvd [LCP ConfReq ID=0x1 <asyncmap 0x0> <auth chap MS-v2> <magic 0x23d6bed3> <pcomp> <accomp>]pppd[8205]: sent [LCP ConfNak ID=0x1 <auth pap>]pppd[8205]: rcvd [LCP ConfReq ID=0x2 <asyncmap 0x0> <magic 0x23d6bed3> <pcomp> <accomp>]

如果我正确读取,服务器请求mschap-v​​2 auth,那么客户端拒绝(为什么？);在此之后客户端请求mschap-v​​2 auth,然后服务器拒绝pap(wtf？),导致两个对等体都没有使用auth并且连接失败.

有人可以了解这里发生的事情吗？

解决方法 弄清楚了.

问题是在客户端给pppd提供了“auth”和“require-mschap-v​​2”选项.显然,只有服务器端必须配置为请求身份验证,客户端配置为不请求任何类型的身份验证.发生的事情是客户端要求服务器验证自己,但失败了.

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