Started networking chapter.

Currently just some random networking commands.

2 files changed, 160 insertions, 0 deletions

diff --git a/linux-basics/networking/Makefile b/linux-basics/networking/Makefile
new file mode 100644
index 0000000..4663d52
--- /dev/null
+++ b/linux-basics/networking/Makefile
@@ -0,0 +1,9 @@
+all:
+	for pdf in `ls -1 *.tex` ; do \
+		pdflatex $$pdf; \
+		pdflatex $$pdf; \
+	done
+
+clean:
+	rm -f *.aux *.log *.pdf *.log *.snm *.toc *.vrb *.nav *.out
+
diff --git a/linux-basics/networking/pres_networking_en.tex b/linux-basics/networking/pres_networking_en.tex
new file mode 100644
index 0000000..2adfc3c
--- /dev/null
+++ b/linux-basics/networking/pres_networking_en.tex
@@ -0,0 +1,151 @@
+\documentclass[11pt]{beamer}
+
+%\usepackage{ngerman}
+\usepackage{times}
+\usepackage{graphicx}
+\usepackage{pgf,pgfarrows,pgfnodes,pgfautomata,pgfheaps}
+\usepackage{amsmath,amssymb}
+\usepackage[latin1]{inputenc}
+\usepackage{listings,color}
+\definecolor{lbcolor}{RGB}{255,210,150}
+\lstset{
+	language=C,
+	numbers=left,
+	stepnumber=1,
+	numbersep=5pt,
+	numberstyle=\tiny,
+	breaklines=true,
+	breakautoindent=true,
+	postbreak=\space,
+	tabsize=2,
+	basicstyle=\ttfamily\footnotesize,
+	showspaces=false,
+	showstringspaces=false,
+	extendedchars=true,
+	backgroundcolor=\color{lbcolor},
+	keywordstyle=\bf ,
+	commentstyle=\color{green},
+	stringstyle=\color{red}
+}
+
+\mode<presentation>
+{
+	\usetheme{linutronix}
+}
+
+% on the following slides, include icon in the left sidebar
+\def\lximg{/usr/share/lx/icons/fueller.png}
+
+\title{Network configuration}
+\institute{Linutronix GmbH}
+
+\begin{document}
+
+\frame{ \titlepage }
+
+% stop displaying 'fueller.png' on the following slides
+\def\lximg{none}
+
+\begin{frame}[fragile]
+\frametitle{ifconfig}
+\begin{verbatim}
+# List all configured network devices
+ifconfig
+# List all available network devices
+ifconfig -a
+# Configure eth0
+ifconfig eth0 192.168.0.2 \
+     netmask 255.255.255.0 up
+# De-activate eth0
+ifconfig eth0 down
+\end{verbatim}
+\end{frame}
+
+\begin{frame}[fragile]
+\frametitle{Debian}
+/etc/network/interfaces:
+\begin{verbatim}
+auto lo
+iface lo inet loopback
+
+auto eth0
+iface eth0 inet static
+address 192.168.2.1
+network 192.168.2.0
+netmask 255.255.255.0
+broadcast 192.168.2.255
+gateway 192.168.2.1
+\end{verbatim}
+\end{frame}
+
+\begin{frame}[fragile]
+\frametitle{Debian}
+/etc/network/interfaces:
+\begin{verbatim}
+auto lo
+iface lo inet loopback
+
+auto eth0
+iface eth0 inet dhcp
+\end{verbatim}
+\end{frame}
+
+\begin{frame}[fragile]
+\frametitle{SysFS attributes}
+\begin{verbatim}
+# Check the link status
+$ cat /sys/class/net/eth0/carrier 
+1
+# Check the MAC address
+$ cat /sys/class/net/eth0/address
+00:0c:29:43:4b:69
+\end{verbatim}
+\end{frame}
+
+\begin{frame}[fragile]
+\frametitle{The ip tool}
+\begin{verbatim}
+# Show links
+$ ip link list
+# Show routes
+$ ip route show
+# Show the current ARP cache
+$ ip neigh show
+# Change the IP address
+$ sudo ip addr change 192.168.0.3 dev eth0
+# Change the MAC address
+$ ip link set eth0 address 00:0c:29:43:4b:ff
+\end{verbatim}
+\end{frame}
+
+\begin{frame}[fragile]
+\frametitle{netcat: The TCP / IP swiss army knife}
+\begin{verbatim}
+# On the server
+nc -l -p 5555
+# On the client
+nc localhost 5555
+\end{verbatim}
+\end{frame}
+
+\begin{frame}[fragile]
+\frametitle{netcat: Testing connections}
+\begin{verbatim}
+$ nc some_web_server 80
+GET / HTTP/1.0
+[...]
+$ nc -nv 192.168.0.1 22
+Connection to 192.168.0.1 22 port [tcp/*]
+SSH-2.0-dropbear_0.48
+\end{verbatim}
+\end{frame}
+
+\begin{frame}
+\frametitle{Network sniffer}
+\begin{itemize}
+\item tcpdump
+\item wireshark
+\end{itemize}
+\end{frame}
+
+\end{document}