Yücel Gemici ygemici

Here are several different ways to test a TCP port without telnet.

BASH (man page)

$ cat < /dev/tcp/127.0.0.1/22
SSH-2.0-OpenSSH_5.3
^C

$ cat &lt; /dev/tcp/127.0.0.1/23

This documents tries to address some concerns with enabling PIE.

One of the criticism of "Using PIE by default on AMD64" is,

	#!/bin/sh
	# Sample /etc/qemu-ifup to have bridged networking between qemu instances and your real net
	# You need "youruser ALL=(root) NOPASSWD: /etc/qemu-ifup" in /etc/sudoers
	# You also need enough rights on /dev/tun
	BRIDGE=br0
	if [ -z "$1" ]; then
	exit 1
	fi
	if [ $UID -ne 0 ]
	then