[tac_plus] Tacacs problem with packets

Fri Dec 26 23:02:22 UTC 2014

No just rebooting does not resolve it. The same error log appears after reboot. The packet is received from tacacs before the login fields are displayed to enter username and password. That’s why the user field is empty at below logs.

Fri Dec 26 23:58:16 2014 [1590]: Reading config
Fri Dec 26 23:58:16 2014 [1590]: Version F4.0.4.26 Initialized 1
Fri Dec 26 23:58:16 2014 [1590]: tac_plus server F4.0.4.26 starting
Fri Dec 26 23:58:16 2014 [1591]: Backgrounded
Fri Dec 26 23:58:16 2014 [1592]: uid=0 euid=0 gid=0 egid=0 s=0
Fri Dec 26 23:58:50 2014 [1592]: session request from 10.2.18.53 sock=2
Fri Dec 26 23:58:50 2014 [1596]: connect from 10.2.18.53 [10.2.18.53]
Fri Dec 26 23:58:50 2014 [1596]: Waiting for packet
Fri Dec 26 23:58:50 2014 [1596]: Read AUTHEN/START size=36
Fri Dec 26 23:58:50 2014 [1596]: validation request from 10.2.18.53
Fri Dec 26 23:58:50 2014 [1596]: PACKET: key=3l3ct!0ns
Fri Dec 26 23:58:50 2014 [1596]: version 192 (0xc0), type 1, seq no 1, flags 0x1
Fri Dec 26 23:58:50 2014 [1596]: session_id 1704442042 (0x6597b8ba), Data length 24 (0x18)
Fri Dec 26 23:58:50 2014 [1596]: End header
Fri Dec 26 23:58:50 2014 [1596]: type=AUTHEN/START, priv_lvl = 1
Fri Dec 26 23:58:50 2014 [1596]: action=login
Fri Dec 26 23:58:50 2014 [1596]: authen_type=ascii
Fri Dec 26 23:58:50 2014 [1596]: service=login
Fri Dec 26 23:58:50 2014 [1596]: user_len=0 port_len=4 (0x4), rem_addr_len=12 (0xc)
Fri Dec 26 23:58:50 2014 [1596]: data_len=0

Fri Dec 26 23:58:50 2014 [1596]: User:

Fri Dec 26 23:58:50 2014 [1596]: port:
Fri Dec 26 23:58:50 2014 [1596]: tty1
Fri Dec 26 23:58:50 2014 [1596]: rem_addr:
Fri Dec 26 23:58:50 2014 [1596]: 172.27.1.153
Fri Dec 26 23:58:50 2014 [1596]: data:
Fri Dec 26 23:58:50 2014 [1596]: End packet
Fri Dec 26 23:58:50 2014 [1596]: Authen Start request
Fri Dec 26 23:58:50 2014 [1596]: choose_authen returns 1
Fri Dec 26 23:58:50 2014 [1596]: Writing AUTHEN/GETUSER size=55
Fri Dec 26 23:58:50 2014 [1596]: PACKET: key=3l3ct!0ns
Fri Dec 26 23:58:50 2014 [1596]: version 192 (0xc0), type 1, seq no 2, flags 0x1
Fri Dec 26 23:58:50 2014 [1596]: session_id 1704442042 (0x6597b8ba), Data length 43 (0x2b)
Fri Dec 26 23:58:50 2014 [1596]: End header
Fri Dec 26 23:58:50 2014 [1596]: type=AUTHEN status=4 (AUTHEN/GETUSER) flags=0x0
Fri Dec 26 23:58:50 2014 [1596]: msg_len=37, data_len=0
Fri Dec 26 23:58:50 2014 [1596]: msg:
Fri Dec 26 23:58:50 2014 [1596]:  0xa User Access Verification 0xa
Fri Dec 26 23:58:50 2014 [1596]: data:
Fri Dec 26 23:58:50 2014 [1596]: End packet
Fri Dec 26 23:58:50 2014 [1596]: Waiting for packet
Fri Dec 26 23:58:50 2014 [1596]: 10.2.18.53 tty1: fd 2 eof (connection closed)
Fri Dec 26 23:58:50 2014 [1596]: Read -1 bytes from 10.2.18.53 tty1, expecting 12
Fri Dec 26 23:58:50 2014 [1596]: Error 10.2.18.53 tty1: Null reply packet, expecting CONTINUE
Fri Dec 26 23:58:50 2014 [1596]: 10.2.18.53: disconnect

BR

Jetmir SULMINA
Supervisor
Planning & Optimization Unit
Datacom Department
Albtelecom & Eagle Mobile

Autostrada TR-DR Km. 7
Kashar-Tirane, Albania
Mobile: +355672644110
E-Mail: jetmir.sulmina at albtelecom.al
Website: www.albtelecom.al

-----Original Message-----
From: heasley [mailto:heas at shrubbery.net]
Sent: Friday, December 26, 2014 11:04 PM
To: Jetmir Sulmina
Cc: heasley; tac_plus at shrubbery.net
Subject: Re: [tac_plus] Tacacs problem with packets

Fri, Dec 26, 2014 at 07:42:22PM +0000, Jetmir Sulmina:
> Hi Heasley,
>
> The configuration file is as in attach. The log file is tac_plus.log is very big to be sent via my mail. The portion of log I sent you was from that file (if you refer to tac_plus.log file). If you need it I'll send tomorrow a part of it since we have finished work for today.
>
> The installation was done from source file:
> ftp://ftp.shrubbery.net/pub/tac_plus/tacacs+-F4.0.4.26.tar.gz
>
> The problem disappears when I re-instal a fresh copy of OS, but after some days happens again.
> If I re-install only the tacacs service the problem remains, does not disappear.

Just rebooting the host does not fix the problem?  Are patches being installed that might affect tacacs?

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