Bypass Callback

[Snglks]

I used Version 12.0(7)T on a 3640 with Dial In Asyncronus and PRI Interfaces.
On Tacacs Configuration Users Have Authority to dynamic define callback number.
A Windows User could bypass Callback prompt for User define Call Back Number and then connect to the server without callback procedure.

I put version 12.2(11)T11 and now if the user press ESC on the Windows Callback prompt for User define Number i have

On then Router

.
.
1d12h: As102 MCB: Response CBK-None 1 2
1d12h: As102 MCB: Resp with None type, Expected Client-Num type
1d12h: %LINK-5-CHANGED: Interface Async102, changed state to reset
.
.


and line dropped



ANY suggestion ?

 

[rtfmdude]

post these on a failed call, please:

debug modem
debug ppp negotiation
debug dialer

 

[Snglks]

I'm sending full trace


2d03h: TTY97: DSR came up
2d03h: TTY97: no timer type 1 to destroy
2d03h: TTY97: no timer type 0 to destroy
2d03h: tty97: Modem: IDLE->(unknown)
2d03h: As97 LCP: I CONFREQ [Closed] id 0 len 23
2d03h: As97 LCP: ACCM 0x00000000 (0x020600000000)
2d03h: As97 LCP: MagicNumber 0x2D3E5A1C (0x05062D3E5A1C)
2d03h: As97 LCP: PFC (0x0702)
2d03h: As97 LCP: ACFC (0x0802)
2d03h: As97 LCP: Callback 6 (0x0D0306)
2d03h: As97 LCP: Lower layer not up, Fast Starting
2d03h: As97 PPP: Treating connection as a callin
2d03h: As97 PPP: Phase is ESTABLISHING, Passive Open
2d03h: As97 LCP: State is Listen
2d03h: As97 LCP: O CONFREQ [Listen] id 160 len 25
2d03h: As97 LCP: ACCM 0x000A0000 (0x0206000A0000)
2d03h: As97 LCP: AuthProto CHAP (0x0305C22305)
2d03h: As97 LCP: MagicNumber 0x5B830911 (0x05065B830911)
2d03h: As97 LCP: PFC (0x0702)
2d03h: As97 LCP: ACFC (0x0802)
2d03h: As97 LCP: O CONFACK [Listen] id 0 len 23
2d03h: As97 LCP: ACCM 0x00000000 (0x020600000000)
2d03h: As97 LCP: MagicNumber 0x2D3E5A1C (0x05062D3E5A1C)
2d03h: As97 LCP: PFC (0x0702)
2d03h: As97 LCP: ACFC (0x0802)
2d03h: As97 LCP: Callback 6 (0x0D0306)
2d03h: As97 LCP: State is Open
2d03h: As97 PPP: Phase is AUTHENTICATING, by this end
2d03h: As97 CHAP: O CHALLENGE id 96 len 27 from "konkat"
2d03h: %LINK-3-UPDOWN: Interface Async97, changed state to up
2d03h: As97 DDR: Dialer statechange to up
2d03h: As97 DDR: Dialer received incoming call from <unknown>
2d03h: As97 LCP: I CONFACK [Open] id 160 len 25
2d03h: As97 LCP: ACCM 0x000A0000 (0x0206000A0000)
2d03h: As97 LCP: AuthProto CHAP (0x0305C22305)
2d03h: As97 LCP: MagicNumber 0x5B830911 (0x05065B830911)
2d03h: As97 LCP: PFC (0x0702)
2d03h: As97 LCP: ACFC (0x0802)
2d03h: As97 LCP: I IDENTIFY [Open] id 1 len 18 magic 0x2D3E5A1C MSRASV5.10
2d03h: As97 LCP: I IDENTIFY [Open] id 2 len 24 magic 0x2D3E5A1C MSRAS-0-CHRISTOS

2d03h: As97 CHAP: I RESPONSE id 96 len 27 from "sti"
2d03h: As97 DDR: Remote name for sti
2d03h: As97 DDR: Authenticated host sti with no matching dialer map
2d03h: As97 CHAP: O SUCCESS id 96 len 4
2d03h: As97 MCB: User sti Callback Number - Client ANY
2d03h: Async97 PPP: O MCB Request(1) id 16 len 9
2d03h: Async97 MCB: O 1 10 0 9 2 5 0 1 0
2d03h: As97 MCB: O Request Id 16 Callback Type Client-Num delay 0
2d03h: As97 PPP: Phase is CBCP
2d03h: As97 CHAP: I RESPONSE id 96 len 27 from "sti"
2d03h: As97 CHAP: O SUCCESS id 96 len 4
2d03h: As97 MCB: Timeout in state WAIT_RESPONSE
2d03h: Async97 PPP: O MCB Request(1) id 17 len 9
2d03h: Async97 MCB: O 1 11 0 9 2 5 0 1 0
2d03h: As97 MCB: O Request Id 17 Callback Type Client-Num delay 0
2d03h: As97 MCB: Timeout in state WAIT_RESPONSE
2d03h: Async97 PPP: O MCB Request(1) id 18 len 9
2d03h: Async97 MCB: O 1 12 0 9 2 5 0 1 0
2d03h: As97 MCB: O Request Id 18 Callback Type Client-Num delay 0
2d03h: Async97 PPP: I MCB Response(2) id 18 len 6
2d03h: Async97 MCB: I 2 12 0 6 1 2
2d03h: As97 MCB: Received response
2d03h: As97 MCB: Response CBK-None 1 2
2d03h: As97 MCB: Resp with None type, Expected Client-Num type
2d03h: TTY97: Async Int reset: Dropping DTR
2d03h: Di1 DDR: rotary group to 4782 underloaded (37), starting load activity ti
mer
2d03h: TTY97: DSR was dropped
2d03h: tty97: Modem: READY->(unknown)
2d03h: TTY97: dropping DTR, hanging up
2d03h: tty97: Modem: HANGUP->(unknown)
2d03h: %LINK-5-CHANGED: Interface Async97, changed state to reset
2d03h: As97 PPP: Sending Acct Event[Down] id[4EF]
2d03h: As97 PPP: Phase is TERMINATING
2d03h: As97 LCP: State is Closed
2d03h: As97 PPP: Phase is DOWN
2d03h: TTY97: cleanup pending. Delaying DTR
2d03h: TTY97: cleanup pending. Delaying DTR
2d03h: TTY97: cleanup pending. Delaying DTR
2d03h: TTY97: no timer type 0 to destroy
2d03h: TTY97: no timer type 1 to destroy
2d03h: TTY97: no timer type 3 to destroy
2d03h: TTY97: no timer type 4 to destroy
2d03h: TTY97: no timer type 2 to destroy
2d03h: Async97: allowing modem_process to continue hangup
2d03h: TTY97: restoring DTR
2d03h: %LINK-3-UPDOWN: Interface Async97, changed state to down
2d03h: As97 LCP: State is Closed
2d03h: As97 DDR: re-enable timeout

 

[rtfmdude]

Snglks,

Could we see the configs? Thanks.

 

[Snglks]

!
version 12.2
service timestamps debug uptime
service timestamps log uptime
service password-encryption
service udp-small-servers
service tcp-small-servers
!
hostname xxx!
logging buffered 4096 debugging
aaa new-model
!
!
aaa group server tacacs+ tacgroup1
server 10.0.0.2
server 10.0.1.1
!
aaa authentication login default line
aaa authentication login test10 none
aaa authentication ppp default group tacacs+
aaa authentication ppp ACS group tacacs+ local
aaa authentication ppp REFIN local
aaa authorization network default group tacacs+ if-authenticated
aaa authorization network REFIN none
aaa accounting delay-start
aaa accounting exec default start-stop group tacacs+
aaa accounting exec ACS start-stop group tacacs+
aaa accounting network default start-stop group tacacs+
aaa accounting network ACS start-stop group tacacs+
aaa accounting network REFIN start-stop group tacacs+
aaa accounting connection default start-stop group tacacs+
aaa accounting connection ACS start-stop group tacacs+
aaa session-id common
enable secret 5 xxx
enable password 7xxxx
!
username lpcref password 7 xxx
memory-size iomem 20
ip subnet-zero
!
!
no ip domain lookup
!
isdn switch-type basic-net3
isdn voice-call-failure 0
!
chat-script dial ABORT ERROR "" "AT Z" OK "ATDT \T" TIMEOUT 30 CONNECT \c
!
controller E1 2/0
pri-group timeslots 1-31
!
!
!
interface Loopback0
ip address 15.6.0.1 255.255.255.0
!
interface BRI0/0
bandwidth 64
no ip address
encapsulation ppp
dialer rotary-group 1
dialer-group 1
isdn switch-type basic-net3
no cdp enable
!
interface BRI0/1
bandwidth 64
no ip address
encapsulation ppp
dialer rotary-group 1
dialer-group 1
isdn switch-type basic-net3
no cdp enable
!
interface BRI0/2
bandwidth 64
no ip address
encapsulation ppp
dialer rotary-group 1
dialer-group 1
isdn switch-type basic-net3
no cdp enable
!
interface BRI0/3
bandwidth 64
no ip address
encapsulation ppp
dialer rotary-group 1
dialer-group 1
isdn switch-type basic-net3
no cdp enable
!
interface Ethernet1/0
description connected to EthernetLAN_4
ip address 15.10.0.10 255.255.0.0
half-duplex
!
interface Serial1/0
ip address 192.168.11.1 255.255.255.0
!
interface Serial1/1
ip address 192.168.12.1 255.255.255.0
!
interface Serial2/0:15
ip unnumbered Loopback0
encapsulation ppp
dialer idle-timeout 10000
dialer-group 10
isdn switch-type primary-net5
isdn incoming-voice modem
isdn disconnect-cause busy
peer default ip address pool IPS test
fair-queue 64 256 0
no cdp enable
ppp callback accept
ppp authentication chap ACS
ppp multilink
!
interface Virtual-Template1
ip unnumbered Loopback0
ip tcp header-compression
no keepalive
timeout absolute 3 0
peer default ip address pool IPS test
ppp callback accept
ppp authentication chap ACS
ppp timeout idle 1800
!
interface Group-Async1
ip unnumbered Loopback0
encapsulation ppp
ip tcp header-compression
timeout absolute 24 0
dialer in-band
dialer idle-timeout 10000
dialer map ip 15.6.0.50 name maria modem-script dial 3723
async default routing
async mode dedicated
peer default ip address pool IPS test
ppp lcp predictive
ppp callback accept
ppp authentication chap ACS
ppp ipcp predictive
group-range 97 104
!
interface Group-Async2
mtu 5000
ip unnumbered Loopback0
encapsulation ppp
ip tcp header-compression
dialer in-band
dialer idle-timeout 50000
dialer map ip 15.6.0.50 name maria modem-script dial 3723
async default routing
async mode dedicated
peer default ip address pool IPS test
ppp callback accept
ppp authentication chap ACS
group-range 121 128
!
interface Dialer1
description connected to lpcref
bandwidth 64
ip address 192.168.10.2 255.255.255.0
encapsulation ppp
no ip split-horizon
dialer in-band
dialer idle-timeout 5000
dialer map ip 192.168.10.1 name lpcref broadcast 4782
dialer map ip 192.168.10.1 name lpcref broadcast 4783
dialer map ip 192.168.10.1 name lpcref broadcast 4780
dialer map ip 192.168.10.1 name lpcref broadcast 4781
dialer hold-queue 30
dialer load-threshold 40 either
dialer-group 1
ppp authentication chap REFIN
ppp multilink
!
interface Dialer10
description ******* to pri ********
bandwidth 64
ip unnumbered Loopback0
encapsulation ppp
ip tcp header-compression passive
dialer pool 10
dialer-group 10
peer default ip address pool IPS test
ppp callback permit
ppp authentication chap callin ACS
!
router rip
version 2
network 10.0.0.0
network 192.168.10.0
no auto-summary
!
ip local pool test 15.6.0.2 15.6.0.10
ip classless
ip route 0.0.0.0 0.0.0.0 15.10.0.1 permanent
ip route 11.0.0.0 255.0.0.0 10.0.1.1
ip route 15.1.0.0 255.255.0.0 10.100.0.1 permanent
ip route 15.3.0.0 255.255.0.0 192.168.10.1 permanent
ip route 15.4.0.0 255.255.0.0 192.168.12.2 permanent
ip route 15.5.0.0 255.255.0.0 192.168.11.2 permanent
ip route 192.168.168.0 255.255.255.0 15.6.50.1
ip route 192.168.169.0 255.255.255.0 15.6.50.2
no ip http server
!
!
dialer-list 1 protocol ip permit
dialer-list 10 protocol ip permit
tacacs-server host 10.0.0.2
tacacs-server host 10.0.1.1
tacacs-server host 10.0.0.3
tacacs-server key xxxxx
snmp-server engineID local 000000090200005073474990
snmp-server community xxx RO
snmp-server enable traps tty
!
line con 0
exec-timeout 0 0
password 7xxxx
line 97 124
flush-at-activation
modem InOut
notify
transport input all
autoselect ppp
stopbits 1
speed 56000
flowcontrol hardware
line 125 128
flush-at-activation
modem InOut
rotary 1
notify
transport input all
autoselect ppp
stopbits 1
speed 56000
flowcontrol hardware
line aux 0
modem InOut
transport input all
line vty 0 4
password 7 xxxxx
!
!
end