Kenneth: /* Copy Disk Across Network */

2020-06-01T20:10:46Z

Copy Disk Across Network

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==Netcat==

[http://netcat.sourceforge.net/ Netcat]

Copy files from machine foo to bar on port 3333 (-l, listen):
user@bar$ nc -l -p 3333 > backup.iso
user@foo$ nc bar 3333 < backup.iso

Open a raw connection to port 25 (like telnet):
nc mail.server.net 25

Check if UDP ports (-u) 80-90 are open on 192.168.0.1 using zero mode I/O (-z):
nc -vzu 192.168.0.1 80-90

References:
*[http://en.wikipedia.org/wiki/Netcat Wiki - netcat]
*[http://www.linux-mag.com/id/1479 Network Tricks with netcat | Linux Magazine]
*[http://www.linux.com/articles/114093 Linux.com :: CLI Magic: netcat]

=== Copy Disk Across Network ===

ref: https://www.cyberciti.biz/tips/howto-copy-compressed-drive-image-over-network.html

netcat -p 2222 -l |bzip2 -d | dd of=/dev/sdb
bzip2 -c /dev/sda | netcat hostA 2222

nc -l 2222 | bzip2 -d > /dev/sdb
bzip2 -c /dev/sda | nc 192.168.1.1 2222

# for performance:
netcat -p 2222 -l |bzip2 -d | dd of=/dev/sdb bs=16M

=== Sending Email with Netcat ===

ref: [http://www.linuxjournal.com/content/sending-email-netcat Sending Email with Netcat | Linux Journal]

Use the command:
date '+%a, %d %b %Y %H:%M:%S %z'

To generate a date string that resembles:
Mon, 12 Apr 2010 14:21:26 -0400

The contents of your message file should resemble this example:
<pre>
HELO host.example.com
MAIL FROM: <test@host.example.com>
RCPT TO: <bob@example.com>
DATA
From: [Alice] <alice@geek.com>
To: <bob@example.com>
Date: Mon, 12 Apr 2010 14:21:26 -0400
Subject: Test Message

Hi there! This is supposed to be a real email...

Have a good day!
Alice

.
QUIT
</pre>

Now feed message to netcat:
/usr/bin/nc smtp.domain.com 25 < /tmp/message

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Kenneth: /* Copy Disk Across Network */