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Full Discussion: Show OpenSSH SCP Connections
Top Forums UNIX for Advanced & Expert Users Show OpenSSH SCP Connections Post 302089098 by jim mcnamara on Saturday 16th of September 2006 10:43:09 PM
Old 09-16-2006
struct utmp ( in the utmp and wtmp files) has:
ut_id which may have information about remote connections/logins - devices
ut_host has the ip of incoming remote connections/logins

The last command uses wtmp for history, who uses utmp for what is going on now.

There is also in the same struct
ut_line - it is possible this (depending on your OS) may have some information about
outgoing terminals that you can decode. IMO POSIX is fuzzy on what goes here.
I'm not sure how useful this may be.

My best suggestion - scan through the wmtp file with some C code and see how your system records data.
 

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SCP(1)							    BSD General Commands Manual 						    SCP(1)

NAME
scp -- secure copy (remote file copy program) SYNOPSIS
scp [-pqrvBC46] [-F ssh_config] [-S program] [-P port] [-c cipher] [-i identity_file] [-o ssh_option] [[user@]host1:]file1 [...] [[user@]host2:]file2 DESCRIPTION
scp copies files between hosts on a network. It uses ssh(1) for data transfer, and uses the same authentication and provides the same secu- rity as ssh(1). Unlike rcp(1), scp will ask for passwords or passphrases if they are needed for authentication. Any file name may contain a host and user specification to indicate that the file is to be copied to/from that host. Copies between two remote hosts are permitted. The options are as follows: -c cipher Selects the cipher to use for encrypting the data transfer. This option is directly passed to ssh(1). -i identity_file Selects the file from which the identity (private key) for RSA authentication is read. This option is directly passed to ssh(1). -p Preserves modification times, access times, and modes from the original file. -r Recursively copy entire directories. -v Verbose mode. Causes scp and ssh(1) to print debugging messages about their progress. This is helpful in debugging connection, authentication, and configuration problems. -B Selects batch mode (prevents asking for passwords or passphrases). -q Disables the progress meter. -C Compression enable. Passes the -C flag to ssh(1) to enable compression. -F ssh_config Specifies an alternative per-user configuration file for ssh. This option is directly passed to ssh(1). -P port Specifies the port to connect to on the remote host. Note that this option is written with a capital 'P', because -p is already reserved for preserving the times and modes of the file in rcp(1). -S program Name of program to use for the encrypted connection. The program must understand ssh(1) options. -o ssh_option Can be used to pass options to ssh in the format used in ssh_config(5). This is useful for specifying options for which there is no separate scp command-line flag. For example, forcing the use of protocol version 1 is specified using scp -oProtocol=1. -4 Forces scp to use IPv4 addresses only. -6 Forces scp to use IPv6 addresses only. DIAGNOSTICS
scp exits with 0 on success or >0 if an error occurred. AUTHORS
Timo Rinne <tri@iki.fi> and Tatu Ylonen <ylo@cs.hut.fi> HISTORY
scp is based on the rcp(1) program in BSD source code from the Regents of the University of California. SEE ALSO
rcp(1), sftp(1), ssh(1), ssh-add(1), ssh-agent(1), ssh-keygen(1), ssh_config(5), sshd(8) BSD
September 25, 1999 BSD
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