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intercept the ip address of a telnet session
Post 84564 by paololrp on Tuesday 27th of September 2005 07:33:00 AM
09-27-2005
intercept the ip address of a telnet session
The situation:
a Unix system (UnixWare 7.1.3) to which are connected other systems;
various p.c. on the LAN that they connect Unix to the system via TelNet.
The problem:
I need to intercept the address IP of the p.cs. connected via telnet to the Unix system.
Particularly, I have to know the address of the specific p.c., immediately after it has completed the login so that to be able to redirect some elaborations on its shared resources.
This use, obviously, has to be already operating in the shell, immediately after having made login.
I have tried to see between the various commands and file of system, but I have not succeeded in understanding as the system it associates a host to its ip address.
With the command "netstat - n - p tcp" I succeed at the most in knowing what systems are conversing by tcp-ip, but the problem is that this command not me from specific information for the p.c. from which I am performing the session telnet.
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Original message (Italian):
Situazione:
un sistema Unix (UnixWare 7.1.3) a cui si collegano vari altri sistemi;
vari p.c. in rete locale che si collegano al sistema Unix via TelNet.
Problema:
ho bisogno di intercettare l'indirizzo IP dei p.c. che si collegano al sistema Unix.
In particolare, devo conoscere l'indirizzo del p.c. specifico, subito dopo che ha completato il login, in modo da poter reindirizzare alcune elaborazioni sulle sue risorse condivise.
Questo utilizzo, ovviamente, deve essere funzionante già nella shell, subito dopo aver fatto login.
Ho provato a vedere tra i vari comandi e file di sistema, ma non sono riuscito a capire come il sistema associa un host al suo indirizzo ip.
Con il comando "netstat -n -p tcp" riesco al massimo a sapere quali sistemi stanno dialogando in tcp-ip, ma il problema è che questo comando non mi da informazioni specifiche per il p.c. da cui sto eseguendo la sessione telnet.
a Unix system (UnixWare 7.1.3) to which are connected other systems;
various p.c. on the LAN that they connect Unix to the system via TelNet.
The problem:
I need to intercept the address IP of the p.cs. connected via telnet to the Unix system.
Particularly, I have to know the address of the specific p.c., immediately after it has completed the login so that to be able to redirect some elaborations on its shared resources.
This use, obviously, has to be already operating in the shell, immediately after having made login.
I have tried to see between the various commands and file of system, but I have not succeeded in understanding as the system it associates a host to its ip address.
With the command "netstat - n - p tcp" I succeed at the most in knowing what systems are conversing by tcp-ip, but the problem is that this command not me from specific information for the p.c. from which I am performing the session telnet.
---
Original message (Italian):
Situazione:
un sistema Unix (UnixWare 7.1.3) a cui si collegano vari altri sistemi;
vari p.c. in rete locale che si collegano al sistema Unix via TelNet.
Problema:
ho bisogno di intercettare l'indirizzo IP dei p.c. che si collegano al sistema Unix.
In particolare, devo conoscere l'indirizzo del p.c. specifico, subito dopo che ha completato il login, in modo da poter reindirizzare alcune elaborazioni sulle sue risorse condivise.
Questo utilizzo, ovviamente, deve essere funzionante già nella shell, subito dopo aver fatto login.
Ho provato a vedere tra i vari comandi e file di sistema, ma non sono riuscito a capire come il sistema associa un host al suo indirizzo ip.
Con il comando "netstat -n -p tcp" riesco al massimo a sapere quali sistemi stanno dialogando in tcp-ip, ma il problema è che questo comando non mi da informazioni specifiche per il p.c. da cui sto eseguendo la sessione telnet.
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LEARN ABOUT SUSE
findsmb
FINDSMB(1) User Commands FINDSMB(1) NAME
findsmb - list info about machines that respond to SMB name queries on a subnet SYNOPSIS
findsmb [subnet broadcast address] DESCRIPTION
This perl script is part of the samba(7) suite. findsmb is a perl script that prints out several pieces of information about machines on a subnet that respond to SMB name query requests. It uses nmblookup(1) and smbclient(1) to obtain this information. OPTIONS
-r Controls whether findsmb takes bugs in Windows95 into account when trying to find a Netbios name registered of the remote machine. This option is disabled by default because it is specific to Windows 95 and Windows 95 machines only. If set, nmblookup(1) will be called with -B option. subnet broadcast address Without this option, findsmb will probe the subnet of the machine where findsmb(1) is run. This value is passed to nmblookup(1) as part of the -B option. EXAMPLES
The output of findsmb lists the following information for all machines that respond to the initial nmblookup for any name: IP address, NetBIOS name, Workgroup name, operating system, and SMB server version. There will be a '+' in front of the workgroup name for machines that are local master browsers for that workgroup. There will be an '*' in front of the workgroup name for machines that are the domain master browser for that workgroup. Machines that are running Windows for Workgroups, Windows 95 or Windows 98 will not show any information about the operating system or server version. The command with -r option must be run on a system without nmbd(8) running. If nmbd is running on the system, you will only get the IP address and the DNS name of the machine. To get proper responses from Windows 95 and Windows 98 machines, the command must be run as root and with -r option on a machine without nmbd running. For example, running findsmb without -r option set would yield output similar to the following IP ADDR NETBIOS NAME WORKGROUP/OS/VERSION --------------------------------------------------------------------- 192.168.35.10 MINESET-TEST1 [DMVENGR] 192.168.35.55 LINUXBOX *[MYGROUP] [Unix] [Samba 2.0.6] 192.168.35.56 HERBNT2 [HERB-NT] 192.168.35.63 GANDALF [MVENGR] [Unix] [Samba 2.0.5a for IRIX] 192.168.35.65 SAUNA [WORKGROUP] [Unix] [Samba 1.9.18p10] 192.168.35.71 FROGSTAR [ENGR] [Unix] [Samba 2.0.0 for IRIX] 192.168.35.78 HERBDHCP1 +[HERB] 192.168.35.88 SCNT2 +[MVENGR] [Windows NT 4.0] [NT LAN Manager 4.0] 192.168.35.93 FROGSTAR-PC [MVENGR] [Windows 5.0] [Windows 2000 LAN Manager] 192.168.35.97 HERBNT1 *[HERB-NT] [Windows NT 4.0] [NT LAN Manager 4.0] VERSION
This man page is correct for version 3 of the Samba suite. SEE ALSO
nmbd(8), smbclient(1), and nmblookup(1) AUTHOR
The original Samba software and related utilities were created by Andrew Tridgell. Samba is now developed by the Samba Team as an Open Source project similar to the way the Linux kernel is developed. The original Samba man pages were written by Karl Auer. The man page sources were converted to YODL format (another excellent piece of Open Source software, available at ftp://ftp.icce.rug.nl/pub/unix/) and updated for the Samba 2.0 release by Jeremy Allison. The conversion to DocBook for Samba 2.2 was done by Gerald Carter. The conversion to DocBook XML 4.2 for Samba 3.0 was done by Alexander Bokovoy. Samba 3.5 06/18/2010 FINDSMB(1)