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Special Forums Cybersecurity How can you send a file over Ip.NOT EMAIL Post 302500876 by Corona688 on Tuesday 1st of March 2011 10:31:27 PM
Old 03-01-2011
Quote:
Originally Posted by orszhak
So I was just wondering... Is there a way to send a file directly to the computer.
There is no direct way. TCP/IP communication is almost invariably programs on one machine communicating with programs on a different machine (or perhaps the same machine), there's no trapdoors that directly instruct the kernel to do anything to files. The only exceptions that leap to mind are network filesystem drivers, and given the number of hoops you have to jump through to get NFS going on purpose, having it happen by accident seems sincerely unlikely! Not to say that there may not be brain-dead distros that have open NFS by default -- but when it's off, it's off, and isn't going to be nudged into running just because someone bothers your network enough. Same goes for any other system daemon capable of creating files -- someone with administrator access actually has to turn it on. Or, someone on the inside can run something on an anonymous port if you haven't firewalled that, but it'll have no more access than the user does...

What's more likely to happen is an exploitation of mundane things. A badly written CGI script could be abused to create and/or execute files in /tmp. (For this reasons some web servers have hardened /tmp/ partitions that literally cannot execute any files in them.) Or a limited account with a weak password gets cracked and they just live in that tiny corner of your machine, connecting to a botnet and cracking passwords for it. And so on. They don't have to crack your whole system to use you, and a smart cracker won't interfere with the operations of your system lest you notice.

Last edited by Corona688; 03-01-2011 at 11:44 PM..
 

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mlmmj-send(1)						      General Commands Manual						     mlmmj-send(1)

NAME
mlmmj-send - send mail to a mailinglist or similar SYNOPSIS
mlmmj-send [-L /path/to/list | -l listctrl] -m /path/to/mail [-a] [-D] [-F] [-h] [-o] [-r] [-R] [-s] [-T] [-V] -a: Don't archive the mail -D: Don't delete the mail after it's sent -F: What to use as MAIL FROM: -h: This help -l: List control variable. -L: Full path to list directory -m: Full path to mail file -o: Address to omit from distribution (normal mail only) -r: Relayhost IP address (defaults to 127.0.0.1) -R: What to use as Reply-To: header -s: Subscribers file name -T: What to use as RCPT TO: -V: Print version DESCRIPTION
This binary is used to send all kinds of mail to mlmmj managed mailinglists, but can potentially be used standalone for sending mails. The only option that is not self explanatory is the -l list control option: '1' means 'send a single mail' This is used together with -F and -T to send one mail to one recipient. '2' means 'mail to moderators' Used for sending mails to the moderators of a list. '3' means 'resend failed list mail' '4' means 'send to file with recipients' '5' means 'bounceprobe' '6' means 'single listmail to single recipient' BUGS
This manual page is very scarce documentation of the mlmmj-send binary. The reason for this is that it's really not supposed to be used by any human, but only supposed to be invoked from other mlmmj binaries. So in case more documentation is needed, please read the source. AUTHORS
This manual page was written by the following persons: Soren Boll Overgaard <boll@debian.org> (based on html2man output) Mads Martin Jorgensen <mmj@mmj.dk> mlmmj-send January 2010 mlmmj-send(1)
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