В /etc/ppp/options ввел
debug
kdebug 7
natan# cat /etc/ppp/options
modem
crtscts
auth
debug
kdebug 7
require-chap
require-pap
netmask 255.255.255.0
#192.168.107.101:0.0.0.0
#0.0.0.0:0.0.0.0
#defaultroute
proxyarp
#lock
#idle 1500
idle 3600
ms-dns 212.44.130.6
ms-dns 195.68.135.5
#ms-dns 213.221.1.162
noaccomp
noccp
nobsdcomp
nodeflate
nomagic
nopcomp
nopredictor1
#passive
novj
natan#
Получил
Sep 1 17:09:34 natan pppd[42213]: pppd 2.3.5 started by root, uid 0
Sep 1 17:09:34 natan pppd[42213]: Using interface ppp2
Sep 1 17:09:34 natan pppd[42213]: Connect: ppp2 <--> /dev/cuaal
Sep 1 17:09:34 natan pppd[42213]: sent [LCP ConfReq id=0x1 <auth chap 05>]
Sep 1 17:09:35 natan pppd[42213]: rcvd [LCP ConfAck id=0x1 <auth chap 05>]
Sep 1 17:09:37 natan pppd[42213]: rcvd [LCP ConfReq id=0x1 <asyncmap 0x0> <pcomp> <accomp>]
Sep 1 17:09:37 natan pppd[42213]: sent [LCP ConfRej id=0x1 <pcomp> <accomp>]
Sep 1 17:09:37 natan pppd[42213]: sent [LCP ConfReq id=0x1 <auth chap 05>]
Sep 1 17:09:38 natan pppd[42213]: rcvd [LCP ConfReq id=0x2 <asyncmap 0x0>]
Sep 1 17:09:38 natan pppd[42213]: sent [LCP ConfAck id=0x2 <asyncmap 0x0>]
Sep 1 17:09:38 natan pppd[42213]: rcvd [LCP ConfAck id=0x1 <auth chap 05>]
Sep 1 17:09:38 natan pppd[42213]: sent [CHAP Challenge id=0x1 <b92fbed1476b7f25b560017ee2a3860f72716bcc9077dab373d6cf4ee48e75eecee33243d2f78455acbfc647a03964>, name = "natan.strs.ru"]
Sep 1 17:09:41 natan pppd[42213]: sent [CHAP Challenge id=0x1 <b92fbed1476b7f25b560017ee2a3860f72716bcc9077dab373d6cf4ee48e75eecee33243d2f78455acbfc647a03964>, name = "natan.strs.ru"]
Sep 1 17:09:44 natan pppd[42213]: sent [CHAP Challenge id=0x1 <b92fbed1476b7f25b560017ee2a3860f72716bcc9077dab373d6cf4ee48e75eecee33243d2f78455acbfc647a03964>, name = "natan.strs.ru"]
Sep 1 17:09:47 natan pppd[42213]: sent [CHAP Challenge id=0x1 <b92fbed1476b7f25b560017ee2a3860f72716bcc9077dab373d6cf4ee48e75eecee33243d2f78455acbfc647a03964>, name = "natan.strs.ru"]
Sep 1 17:09:50 natan pppd[42213]: sent [CHAP Challenge id=0x1 <b92fbed1476b7f25b560017ee2a3860f72716bcc9077dab373d6cf4ee48e75eecee33243d2f78455acbfc647a03964>, name = "natan.strs.ru"]
Sep 1 17:09:53 natan pppd[42213]: sent [CHAP Challenge id=0x1 <b92fbed1476b7f25b560017ee2a3860f72716bcc9077dab373d6cf4ee48e75eecee33243d2f78455acbfc647a03964>, name = "natan.strs.ru"]
Sep 1 17:09:54 natan pppd[42213]: Hangup (SIGHUP)
Sep 1 17:09:54 natan pppd[42213]: Modem hangup, connected for 1 minutes
Sep 1 17:09:54 natan pppd[42213]: User (unknown) - connection started Sep 1 17:09:34 from <none> to cuaal(ppp2) terminated, connected for 1 minutes, inbytes 171, outbytes 548 transfered
Sep 1 17:09:55 natan pppd[42213]: Exit.
Sep 1 17:11:04 natan pppd[42220]: pppd 2.3.5 started by root, uid 0
Sep 1 17:11:04 natan pppd[42220]: Using interface ppp2
Sep 1 17:11:04 natan pppd[42220]: Connect: ppp2 <--> /dev/cuaal
Sep 1 17:11:04 natan pppd[42220]: sent [LCP ConfReq id=0x1 <auth chap 05>]
Sep 1 17:11:05 natan pppd[42220]: rcvd [LCP ConfAck id=0x1 <auth chap 05>]
Sep 1 17:11:07 natan pppd[42220]: rcvd [LCP ConfReq id=0x1 <asyncmap 0x0> <pcomp> <accomp>]
Sep 1 17:11:07 natan pppd[42220]: sent [LCP ConfRej id=0x1 <pcomp> <accomp>]
Sep 1 17:11:07 natan pppd[42220]: sent [LCP ConfReq id=0x1 <auth chap 05>]
Sep 1 17:11:07 natan pppd[42220]: rcvd [LCP ConfReq id=0x2 <asyncmap 0x0>]
Sep 1 17:11:07 natan pppd[42220]: sent [LCP ConfAck id=0x2 <asyncmap 0x0>]
Sep 1 17:11:08 natan pppd[42220]: rcvd [LCP ConfAck id=0x1 <auth chap 05>]
Sep 1 17:11:08 natan pppd[42220]: sent [CHAP Challenge id=0x1 <06c4f20b44af602984293274101f8d70571a4bb5f6d957725a47b8d3e4b737f0e0b3ce12ce2624a32e>, name = "natan.strs.ru"]
Sep 1 17:11:11 natan pppd[42220]: sent [CHAP Challenge id=0x1 <06c4f20b44af602984293274101f8d70571a4bb5f6d957725a47b8d3e4b737f0e0b3ce12ce2624a32e>, name = "natan.strs.ru"]
Sep 1 17:11:14 natan pppd[42220]: sent [CHAP Challenge id=0x1 <06c4f20b44af602984293274101f8d70571a4bb5f6d957725a47b8d3e4b737f0e0b3ce12ce2624a32e>, name = "natan.strs.ru"]
Sep 1 17:11:17 natan pppd[42220]: sent [CHAP Challenge id=0x1 <06c4f20b44af602984293274101f8d70571a4bb5f6d957725a47b8d3e4b737f0e0b3ce12ce2624a32e>, name = "natan.strs.ru"]
Sep 1 17:11:20 natan pppd[42220]: sent [CHAP Challenge id=0x1 <06c4f20b44af602984293274101f8d70571a4bb5f6d957725a47b8d3e4b737f0e0b3ce12ce2624a32e>, name = "natan.strs.ru"]
Sep 1 17:11:23 natan pppd[42220]: sent [CHAP Challenge id=0x1 <06c4f20b44af602984293274101f8d70571a4bb5f6d957725a47b8d3e4b737f0e0b3ce12ce2624a32e>, name = "natan.strs.ru"]
Sep 1 17:11:24 natan pppd[42220]: Hangup (SIGHUP)
Sep 1 17:11:24 natan pppd[42220]: Modem hangup, connected for 1 minutes
Sep 1 17:11:24 natan pppd[42220]: User (unknown) - connection started Sep 1 17:11:04 from <none> to cuaal(ppp2) terminated, connected for 1 minutes, inbytes 183, outbytes 506 transfered
Sep 1 17:11:25 natan pppd[42220]: Exit.
ТУТ ОТКЛЮЧИЛ CHAP (require-chap)
Sep 1 17:12:46 natan pppd[42224]: pppd 2.3.5 started by root, uid 0
Sep 1 17:12:46 natan pppd[42224]: Using interface ppp2
Sep 1 17:12:46 natan pppd[42224]: Connect: ppp2 <--> /dev/cuaal
Sep 1 17:12:46 natan pppd[42224]: sent [LCP ConfReq id=0x1 <auth pap>]
Sep 1 17:12:47 natan pppd[42224]: rcvd [LCP ConfAck id=0x1 <auth pap>]
Sep 1 17:12:49 natan pppd[42224]: rcvd [LCP ConfReq id=0x1 <asyncmap 0x0> <pcomp> <accomp>]
Sep 1 17:12:49 natan pppd[42224]: sent [LCP ConfRej id=0x1 <pcomp> <accomp>]
Sep 1 17:12:49 natan pppd[42224]: sent [LCP ConfReq id=0x1 <auth pap>]
Sep 1 17:12:50 natan pppd[42224]: rcvd [LCP ConfReq id=0x2 <asyncmap 0x0>]
Sep 1 17:12:50 natan pppd[42224]: sent [LCP ConfAck id=0x2 <asyncmap 0x0>]
Sep 1 17:12:50 natan pppd[42224]: rcvd [LCP ConfAck id=0x1 <auth pap>]
Sep 1 17:13:07 natan pppd[42224]: Hangup (SIGHUP)
Sep 1 17:13:07 natan pppd[42224]: Modem hangup, connected for 1 minutes
Sep 1 17:13:07 natan pppd[42224]: User (unknown) - connection started Sep 1 17:12:46 from <none> to cuaal(ppp2) terminated, connected for 1 minutes, inbytes 169, outbytes 100 transfered
Sep 1 17:13:08 natan pppd[42224]: Exit.