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Full Discussion: Remote command in PuTTY
Top Forums UNIX for Beginners Questions & Answers Remote command in PuTTY Post 303022452 by bakunin on Saturday 1st of September 2018 02:37:28 AM
Old 09-01-2018
Quote:
Originally Posted by d_brodie
I have an issue with all of my AIX servers where a user can execute a remote command (bash in this case) using PuTTY and bypass all of the application security that we setup in the users .profile. How do I secure this without breaking the rest of the users?
Sorry, but i don't understand: PuTTY is a SSH-client which i use myself. If the user can connect to a system and execute bash -norc that means he has

1) identified himself to the system (by password, SSH-key, whatever)
2) has the right to execute whatever it is he executes

What exactly is breaking the security now? And, finally, if you don't want users to use bash why do you install it onto the system? AIX has Korn shell as the system default and you can either deinstall bash or disable its use as login shell in /etc/security/login.cfg.

I hope this helps.

bakunin
This User Gave Thanks to bakunin For This Post:
 

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plink(1)							 PuTTY tool suite							  plink(1)

NAME
plink - PuTTY link, command line network connection tool SYNOPSIS
plink [options] [user@]host [command] DESCRIPTION
plink is a network connection tool supporting several protocols. OPTIONS
The command-line options supported by plink are: -V Show version information and exit. -pgpfp Display the fingerprints of the PuTTY PGP Master Keys and exit, to aid in verifying new files released by the PuTTY team. -v Show verbose messages. -load session Load settings from saved session. -ssh Force use of SSH protocol (default). -telnet Force use of Telnet protocol. -rlogin Force use of rlogin protocol. -raw Force raw mode. -serial Force serial mode. -P port Connect to port port. -l user Set remote username to user. -m path Read remote command(s) from local file path. -batch Disable interactive prompts. -pw password Set remote password to password. CAUTION: this will likely make the password visible to other users of the local machine (via com- mands such as `w'). -L [srcaddr:]srcport:desthost:destport Set up a local port forwarding: listen on srcport (or srcaddr:srcport if specified), and forward any connections over the SSH con- nection to the destination address desthost:destport. Only works in SSH. -R [srcaddr:]srcport:desthost:destport Set up a remote port forwarding: ask the SSH server to listen on srcport (or srcaddr:srcport if specified), and to forward any con- nections back over the SSH connection where the client will pass them on to the destination address desthost:destport. Only works in SSH. -D [srcaddr:]srcport Set up dynamic port forwarding. The client listens on srcport (or srcaddr:srcport if specified), and implements a SOCKS server. So you can point SOCKS-aware applications at this port and they will automatically use the SSH connection to tunnel all their connec- tions. Only works in SSH. -X Enable X11 forwarding. -x Disable X11 forwarding (default). -A Enable agent forwarding. -a Disable agent forwarding (default). -t Enable pty allocation (default if a command is NOT specified). -T Disable pty allocation (default if a command is specified). -1 Force use of SSH protocol version 1. -2 Force use of SSH protocol version 2. -C Enable SSH compression. -i path Private key file for authentication. -s Remote command is SSH subsystem (SSH-2 only). -N Don't start a remote command or shell at all (SSH-2 only). -sercfg configuration-string Specify the configuration parameters for the serial port, in -serial mode. configuration-string should be a comma-separated list of configuration parameters as follows: o Any single digit from 5 to 9 sets the number of data bits. o `1', `1.5' or `2' sets the number of stop bits. o Any other numeric string is interpreted as a baud rate. o A single lower-case letter specifies the parity: `n' for none, `o' for odd, `e' for even, `m' for mark and `s' for space. o A single upper-case letter specifies the flow control: `N' for none, `X' for XON/XOFF, `R' for RTS/CTS and `D' for DSR/DTR. MORE INFORMATION
For more information on plink, it's probably best to go and look at the manual on the PuTTY web page: http://www.chiark.greenend.org.uk/~sgtatham/putty/ BUGS
This man page isn't terribly complete. See the above web link for better documentation. PuTTY tool suite 2004-03-24 plink(1)
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