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A Working pppd Connection
The following is the output you should see from various commands while a correctly configured ppp connection is open.
ambceal@anuhost 1> last | head -1 amcbeal pts/1 h138.anu.uniras. Sat Apr 17 10:50 still logged inIf other people have logged onto the ANU host after you, use
last | less instead.
Your computer at home should show something like the following. With no ppp connection, the lo section would be the only part displayed.
amcbeal [home] 165> ifconfig
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
UP LOOPBACK RUNNING MTU:3924 Metric:1
RX packets:6 errors:0 dropped:0 overruns:0 frame:0
TX packets:6 errors:0 dropped:0 overruns:0 carrier:0
collisions:0
ppp0 Link encap:Point-to-Point Protocol
inet addr:203.108.55.138 P-t-P:203.108.192.15 Mask:255.255.255.255
UP POINTOPOINT RUNNING NOARP MULTICAST MTU:1500 Metric:1
RX packets:9 errors:0 dropped:0 overruns:0 frame:0
TX packets:10 errors:0 dropped:0 overruns:0 carrier:0
collisions:0
If you are on the slower subnet, the first part of the ppp0 section will show a different subnet for "inet addr"...ppp0 Link encap:Point-to-Point Protocol
inet addr:203.108.192.94 P-t-P:203.108.192.14 Mask:255.255.255.255
The output from route on your computer at home.
Without a ppp connection, only the loopback route (127.0.0.0) is shown.
Without a ppp connection, only the loopback route (127.0.0.0) is shown.
amcbeal [home] 163> route Kernel IP routing table Destination Gateway Genmask Flags Metric Ref Use Iface termcan2.ozemai * 255.255.255.255 UH 0 0 0 ppp0 127.0.0.0 * 255.0.0.0 U 0 0 0 lo default termcan2.ozemai 0.0.0.0 UG 0 0 0 ppp0
Debugging Output Written to /var/log/ppplog
The actual output looks like this...Apr 20 15:57:58 localhost pppd[479]: pppd 2.3.5 started by root, uid 0...however I've removed the date and hostname for brevity.
The first part is the output from chat.
pppd[479]: pppd 2.3.5 started by root, uid 0 chat[480]: send (AT^M) chat[480]: expect (OK) chat[480]: AT^M^M chat[480]: OK chat[480]: -- got it chat[480]: send (ATDT 62578155^M) chat[480]: expect (CONNECT) chat[480]: ^M chat[480]: ATDT 62578155^M^M pppd[479]: Serial connection established. chat[480]: CONNECT chat[480]: -- got itNow it switches to ppp. Some of the abreviations it uses are:
LCP Link Control Protocol
PAP Password Authentication Protocol
IPCP Internet Protocol Control Protocol
pppd[479]: Using interface ppp0 pppd[479]: Connect: ppp0 <--> /dev/modem pppd[479]: sent [LCP ConfReq id=0x1 <magic 0x8c5561c2> <pcomp> <accomp>] pppd[479]: rcvd [LCP ConfReq id=0x1 <asyncmap 0x0> <auth pap> <magic 0x3a9e2b78> <pcomp> <accomp>] pppd[479]: sent [LCP ConfAck id=0x1 <asyncmap 0x0> <auth pap> <magic 0x3a9e2b78> <pcomp> <accomp>] pppd[479]: sent [LCP ConfReq id=0x1 <magic 0x8c5561c2> <pcomp> <accomp>] pppd[479]: rcvd [LCP ConfAck id=0x1 <magic 0x8c5561c2> <pcomp> <accomp>] pppd[479]: sent [PAP AuthReq id=0x1 user="amcbeal" password="ca1op3x"] pppd[479]: sent [PAP AuthReq id=0x2 user="amcbeal" password="ca1op3x"] pppd[479]: rcvd [PAP AuthAck id=0x1 ""] pppd[479]: Remote message: pppd[479]: sent [IPCP ConfReq id=0x1 <addr 0.0.0.0> <compress VJ 0f 01>] pppd[479]: rcvd [IPCP ConfReq id=0x2 <compress VJ 0f 01> <addr 203.108.192.14>] pppd[479]: sent [IPCP ConfAck id=0x2 <compress VJ 0f 01> <addr 203.108.192.14>] pppd[479]: rcvd [IPCP ConfNak id=0x1 <addr 203.108.55.26>] pppd[479]: sent [IPCP ConfReq id=0x2 <addr 203.108.55.26> <compress VJ 0f 01>] pppd[479]: rcvd [IPCP ConfAck id=0x2 <addr 203.108.55.26> <compress VJ 0f 01>] pppd[479]: local IP address 203.108.55.26 pppd[479]: remote IP address 203.108.192.14The following appears after you close the connection with /etc/ppp/scripts/ppp-off
pppd[479]: Terminating on signal 2. pppd[479]: sent [LCP TermReq id=0x2 "User request"] pppd[479]: rcvd [LCP TermAck id=0x2] pppd[479]: Connection terminated. pppd[479]: Exit.
ppplog Output from a Working pppd Connection using CHAP
pppd[1160]: pppd 2.4.0 started by root, uid 0 chat[1161]: abort on (BUSY) chat[1161]: abort on (ERROR) chat[1161]: abort on (NO CARRIER) chat[1161]: abort on (NO DIALTONE) chat[1161]: abort on (Invalid Login) chat[1161]: abort on (Login incorrect) chat[1161]: send (AT^M) chat[1161]: expect (OK) chat[1161]: AT^M^M chat[1161]: OK chat[1161]: -- got it chat[1161]: send (ATDT62617444^M) chat[1161]: expect (CONNECT) chat[1161]: ^M chat[1161]: ATDT62617444^M^M chat[1161]: CONNECT chat[1161]: -- got it pppd[1160]: Serial connection established. pppd[1160]: using channel 1 pppd[1160]: Using interface ppp0 pppd[1160]: Connect: ppp0 <--> /dev/modem pppd[1160]: sent [LCP ConfReq id=0x1] pppd[1160]: rcvd [LCP ConfReq id=0x1 < 00 04 00 00> ] pppd[1160]: sent [LCP ConfRej id=0x1 < 00 04 00 00> ] pppd[1160]: rcvd [LCP ConfAck id=0x1 ] pppd[1160]: rcvd [LCP ConfReq id=0x2 ] pppd[1160]: sent [LCP ConfAck id=0x2 ] pppd[1160]: rcvd [CHAP Challenge id=0x1 , name = "tnt3.cbr1"] pppd[1160]: sent [CHAP Response id=0x1 , name = "amcbeal@ozemail.com.au"] pppd[1160]: rcvd [CHAP Success id=0x1 "\000"] pppd[1160]: Remote message: ^@ pppd[1160]: sent [IPCP ConfReq id=0x1 ] pppd[1160]: sent [CCP ConfReq id=0x1 ] pppd[1160]: rcvd [IPCP ConfReq id=0x1 ] pppd[1160]: sent [IPCP ConfAck id=0x1 ] pppd[1160]: rcvd [IPCP ConfNak id=0x1 ] pppd[1160]: sent [IPCP ConfReq id=0x2 ] pppd[1160]: rcvd [LCP ProtRej id=0x3 80 fd 01 01 00 0f 1a 04 78 00 18 04 78 00 15 03 2f] pppd[1160]: rcvd [IPCP ConfAck id=0x2 ] pppd[1160]: local IP address 210.84.37.27 pppd[1160]: remote IP address 210.84.63.40 pppd[1160]: Script /etc/ppp/ip-up started (pid 1180) pppd[1160]: Script /etc/ppp/ip-up finished (pid 1180), status = 0x0
If your chap-secrets file is missing or incorrect, you might see something like this after it switches to ppp:
pppd[3370]: Serial connection established. pppd[3370]: using channel 1 pppd[3370]: Using interface ppp0 pppd[3370]: Connect: ppp0 <--> /dev/modem pppd[3370]: sent [LCP ConfReq id=0x1] pppd[3370]: rcvd [LCP ConfReq id=0x1 < 00 04 00 00> ] pppd[3370]: sent [LCP ConfRej id=0x1 < 00 04 00 00> ] pppd[3370]: rcvd [LCP ConfAck id=0x1 ] pppd[3370]: rcvd [LCP ConfReq id=0x2 ] pppd[3370]: sent [LCP ConfAck id=0x2 ] pppd[3370]: rcvd [CHAP Challenge id=0x1 , name = "tnt3.cbr1"] pppd[3370]: No CHAP secret found for authenticating us to tnt3.cbr1 pppd[3370]: sent [CHAP Response id=0x1 <68937d227c92b8d9b8b7f64d83214a1a>, name = "amcbeal"] pppd[3370]: rcvd [CHAP Failure id=0x1 "\000"] pppd[3370]: Remote message: ^@ pppd[3370]: CHAP authentication failed pppd[3370]: sent [LCP TermReq id=0x2 "Failed to authenticate ourselves to peer"] pppd[3370]: rcvd [LCP TermAck id=0x2] pppd[3370]: Connection terminated. pppd[3370]: Exit.
If you try to connect to a server and the string <auth chap 80> shows up in the ppplog file, it probably means the server is using a Microsoft variation of CHAP called MSCHAP. You will need to recompile pppd to support this. See README.MSCHAP80 in the pppd source. Fortunately OzEmail does not use MSCHAP so I haven't had to deal with it.
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