Debian PC for GNS3

aptitude install mc openssh-server iperf telnetd


hostname.sh

#!/bin/bash
# 
usage() {
   echo "usage : $0 nouveau_nom_hote"
   exit 1
}

[ -z $1 ] && usage

ancien=`hostname`
nouveau=$1

for file in \
   /etc/exim4/update-exim4.conf.conf \
   /etc/printcap \
   /etc/hostname \
   /etc/hosts \
   /etc/ssh/ssh_host_rsa_key.pub \
   /etc/ssh/ssh_host_dsa_key.pub \
   /etc/motd \
   /etc/ssmtp/ssmtp.conf
do
   [ -f $file ] && sed -i.old -e "s:$ancien:$nouveau:g" $file
done

# vi  /etc/default/grub
Append / modify as follows:

GRUB_CMDLINE_LINUX='console=tty0 console=ttyS0,115200n8'
GRUB_TERMINAL=serial
GRUB_SERIAL_COMMAND="serial --speed=115200 --unit=0 --word=8 --parity=no --stop=1" 

# update-grub 

/etc/inittab

T0:23:respawn:/sbin/getty -L ttyS0 115200 vt102 

init q

# vi /etc/securetty
Make sure UART serial ports /dev/ttyS0 is listed:

ttyS0 

UPD (for Debian Jessie):

1. GRUB_CMDLINE_LINUX="console=ttyS0,115200n8"

2. update-grub

3. GNS3: enable remote console