2014-09-16 17:28:29 +02:00
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%\documentclass[aspectratio=43]{beamer}
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\documentclass[c]{beamer}
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\usetheme{intridea} %% Themenwahl
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\usepackage[ngerman]{babel}
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\usepackage[T1]{fontenc} % richtige Silbentrennung
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\usepackage[utf8]{inputenc} % Umlaute etc.!
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\usepackage{eurosym}
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\usepackage{tikz}
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\usetikzlibrary{arrows,decorations.pathmorphing,backgrounds,fit,positioning,shapes.symbols,chains}
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%1
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\title{Freifunk Hamburg}
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\author{hamburg.freifunk.net}
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\date{2014/Sept/20}
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%2
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\begin{document}
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\maketitle
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\begin{frame}{Was ist freifunk?}
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\begin{itemize}
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\item Initiative für freie, offene, kostenlose Netzwerke
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\item Öffentlich - freifunk steht jedem offen, als Nutzer oder Anbieter
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\item Im Besitz der Gemeinschaft - Wird von den Menschen betrieben, die es nutzen
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\item Nicht kommerziell
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\item Ausschliesslich freie, quelloffene Programme
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\item Netzneutral - keine Manipulation der Datenströme
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2014-09-21 19:38:41 +02:00
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\item In \href{http://freifunk.net/wie-mache-ich-mit/community-finden/}{112 Orten} gibt es bereits Freifunknetze mit mehr als 5100 Zugangspunkten
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2014-09-16 17:28:29 +02:00
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\end{itemize}
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\end{frame}
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%3
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\begin{frame}{Mit freifunk ins Internet}
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\includegraphics[width=\textwidth]{Bilder/Freifunk_Knotenanbindung}
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\end{frame}
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%4
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\begin{frame}{Mesh}
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Zwei SSIDs
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\begin{itemize}
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\item Freifunk Zugang: hamburg.freifunk.net
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\item Meshing (adhoc): f8:d1:11:87:52:2e
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\end{itemize}
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Was ist ein mesh?
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\begin{itemize}
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\item to mesh = Englisch: vermaschen
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\item Selbst organisierendes Netzwerk
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\item hamburg.freifunk.net nutzt das Protokoll B.A.T.M.A.N.-adv.
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\end{itemize}
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\end{frame}
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%5
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\begin{frame}{Mesh}
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\begin{center}
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\begin{tikzpicture}
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\definecolor{outerCircleColour}{RGB}{220, 0, 103}
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\definecolor{innerCircleColour}{RGB}{255, 203, 18}
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\tikzstyle{vertex}=[circle, draw, color=outerCircleColour, ultra thick, minimum size=84pt]
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\tikzstyle{place}=[circle, draw, color=innerCircleColour, fill=innerCircleColour, minimum size=6pt, inner sep=0pt]
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\node [vertex] (a) {};
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\node [vertex, xshift=68pt, yshift=24pt] (b) {};
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\node [vertex, xshift=112pt, yshift=-20pt] (c) {};
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\node [place, label=above:$A$] (A) {};
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\node [place, xshift=68pt, yshift=24pt, label=above:$B$] (B) {};
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\node [place, xshift=112pt, yshift=-20pt, label=right:$C$] (C) {};
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\path[-, thick, color=gray]
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(A) edge (B)
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(B) edge (C);
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\end{tikzpicture}
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\end{center}
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\end{frame}
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%6
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\begin{frame}{Mesh}
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\begin{center}
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\begin{tikzpicture}
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\definecolor{outerCircleColour}{RGB}{220, 0, 103}
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\definecolor{innerCircleColour}{RGB}{255, 203, 18}
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\tikzstyle{vertex}=[circle, draw, color=outerCircleColour, ultra thick, minimum size=84pt]
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\tikzstyle{place}=[circle, draw, color=innerCircleColour, fill=innerCircleColour, minimum size=6pt, inner sep=0pt]
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\node [vertex] (a) {};
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\node [vertex, xshift=68pt, yshift=24pt] (b) {};
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\node [vertex, xshift=112pt, yshift=-20pt] (c) {};
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\node [place, label=above:$A$] (A) {};
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\node [place, xshift=68pt, yshift=24pt, label=above:$B$] (B) {};
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\node [place, xshift=112pt, yshift=-20pt, label=right:$C$] (C) {};
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\path[-, thick, color=gray]
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(A) edge (B)
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(B) edge (C)
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(A) edge[dashed] (C);
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\end{tikzpicture}
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\end{center}
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\end{frame}
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%7
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\begin{frame}{Das Netz wächst}
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\begin{center}
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\begin{tikzpicture}
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\definecolor{outerCircleColour}{RGB}{220, 0, 103}
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\definecolor{innerCircleColour}{RGB}{255, 203, 18}
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\tikzstyle{vertex}=[circle, draw, color=outerCircleColour, ultra thick, minimum size=40pt]
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\tikzstyle{place}=[circle, draw, color=innerCircleColour, fill=innerCircleColour, minimum size=7pt, inner sep=0pt]
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\node [vertex] (a) {};
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\node [vertex, xshift=15pt, yshift=30pt] (b) {};
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\node [vertex, xshift=65pt, yshift=5pt] (c) {};
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\node [vertex, xshift=33pt, yshift=-3pt] (d) {};
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\node [vertex, xshift=85pt, yshift=-25pt] (e) {};
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\node [vertex, xshift=100pt, yshift=2pt] (f) {};
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\node [vertex, xshift=91pt, yshift=32pt] (g) {};
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\node [vertex, xshift=110pt, yshift=-52pt] (h) {};
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\node [vertex, xshift=124pt, yshift=23pt] (i) {};
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\node [vertex, xshift=134pt, yshift=-7pt] (j) {};
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\node [vertex, xshift=164pt, yshift=-14pt] (k) {};
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\node [vertex, xshift=144pt, yshift=-66pt] (l) {};
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\node [vertex, xshift=170pt, yshift=-46pt] (m) {};
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\node [vertex, xshift=201pt, yshift=-59pt] (n) {};
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\node [place] (A) {};
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\node [place, xshift=15pt, yshift=30pt] (B) {};
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\node [place, xshift=65pt, yshift=5pt] (C) {};
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\node [place, xshift=33pt, yshift=-3pt] (D) {};
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\node [place, xshift=85pt, yshift=-25pt] (E) {};
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\node [place, xshift=100pt, yshift=2pt] (F) {};
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\node [place, xshift=91pt, yshift=32pt] (G) {};
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\node [place, xshift=110pt, yshift=-52pt] (H) {};
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\node [place, xshift=124pt, yshift=23pt] (I) {};
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\node [place, xshift=134pt, yshift=-7pt] (J) {};
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\node [place, xshift=164pt, yshift=-14pt] (K) {};
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\node [place, xshift=144pt, yshift=-66pt] (L) {};
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\node [place, xshift=170pt, yshift=-46pt] (M) {};
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\node [place, xshift=201pt, yshift=-59pt] (N) {};
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\path[-, thick, color=gray]
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(A) edge (B)
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(A) edge (D)
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(B) edge (D)
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(C) edge (D)
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(C) edge (E)
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(C) edge (F)
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(C) edge (G)
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(E) edge (F)
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(E) edge (H)
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(F) edge (G)
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(F) edge (I)
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(F) edge (J)
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(G) edge (I)
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(H) edge (L)
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(I) edge (J)
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(J) edge (K)
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(K) edge (M)
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(L) edge (M)
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(M) edge (N);
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\end{tikzpicture}
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\end{center}
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\end{frame}
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%8
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\begin{frame}{Netzwerke verbinden sich untereinander}
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\begin{columns}[c]
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\begin{column}[l]{.4\textwidth}
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\scalebox{0.6}[0.6]{
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\begin{tikzpicture}
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\definecolor{outerCircleColour}{RGB}{220, 0, 103}
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\definecolor{innerCircleColour}{RGB}{255, 203, 18}
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\tikzstyle{vertex}=[circle, draw, color=outerCircleColour, ultra thick, minimum size=40pt]
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\tikzstyle{place}=[circle, draw, color=innerCircleColour, fill=innerCircleColour, minimum size=7pt, inner sep=0pt]
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\node [vertex] (a) {};
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\node [vertex, xshift=15pt, yshift=30pt] (b) {};
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\node [vertex, xshift=65pt, yshift=5pt] (c) {};
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\node [vertex, xshift=33pt, yshift=-3pt] (d) {};
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\node [vertex, xshift=85pt, yshift=-25pt] (e) {};
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\node [vertex, xshift=100pt, yshift=2pt] (f) {};
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\node [vertex, xshift=91pt, yshift=32pt] (g) {};
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\node [vertex, xshift=110pt, yshift=-52pt] (h) {};
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\node [vertex, xshift=124pt, yshift=23pt] (i) {};
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\node [vertex, xshift=134pt, yshift=-7pt] (j) {};
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\node [vertex, xshift=164pt, yshift=-14pt] (k) {};
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\node [vertex, xshift=144pt, yshift=-66pt] (l) {};
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\node [vertex, xshift=170pt, yshift=-46pt] (m) {};
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\node [vertex, xshift=201pt, yshift=-59pt] (n) {};
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\node [place] (A) {};
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\node [place, xshift=15pt, yshift=30pt] (B) {};
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\node [place, xshift=65pt, yshift=5pt] (C) {};
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\node [place, xshift=33pt, yshift=-3pt] (D) {};
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\node [place, xshift=85pt, yshift=-25pt] (E) {};
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\node [place, xshift=100pt, yshift=2pt] (F) {};
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\node [place, xshift=91pt, yshift=32pt] (G) {};
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\node [place, xshift=110pt, yshift=-52pt] (H) {};
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\node [place, xshift=124pt, yshift=23pt] (I) {};
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\node [place, xshift=134pt, yshift=-7pt] (J) {};
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\node [place, xshift=164pt, yshift=-14pt] (K) {};
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\node [place, xshift=144pt, yshift=-66pt] (L) {};
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\node [place, xshift=170pt, yshift=-46pt] (M) {};
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\node [place, xshift=201pt, yshift=-59pt] (N) {};
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\path[-, thick, color=gray]
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(A) edge (B)
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(A) edge (D)
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(B) edge (D)
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(C) edge (D)
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(C) edge (E)
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(C) edge (F)
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(C) edge (G)
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(E) edge (F)
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(E) edge (H)
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(F) edge (G)
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(F) edge (I)
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(F) edge (J)
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(G) edge (I)
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(H) edge (L)
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(I) edge (J)
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(J) edge (K)
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(K) edge (M)
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(L) edge (M)
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(M) edge (N);
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\end{tikzpicture}}
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\end{column}
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\begin{column}{0.185\textwidth}
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\begin{uncoverenv}<2->
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\begin{tikzpicture}
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\definecolor{outerCircleColour}{RGB}{220, 0, 103}
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\definecolor{innerCircleColour}{RGB}{255, 203, 18}
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\draw[color=white] (280pt, 85pt) arc (0:0:0pt);
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\draw[color=white] (-180pt, 85pt) arc (0:0:0pt);
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\draw[color=outerCircleColour, thick, xshift=-50pt, yshift=9pt] (-110pt, 0pt) arc (270:450:6pt);
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\draw[color=outerCircleColour, thick, xshift=-50pt, yshift=11pt] (-110pt, 0pt) arc (270:450:4pt);
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\draw[color=outerCircleColour, thick, xshift=-50pt, yshift=13pt] (-110pt, 0pt) arc (270:450:2pt);
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\draw[color=outerCircleColour, thick, xshift=-9pt, yshift=21pt] (-110pt, 0pt) arc (90:270:6pt);
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\draw[color=outerCircleColour, thick, xshift=-9pt, yshift=19pt] (-110pt, 0pt) arc (90:270:4pt);
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\draw[color=outerCircleColour, thick, xshift=-9pt, yshift=17pt] (-110pt, 0pt) arc (90:270:2pt);
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\draw[color=gray, ultra thick, xshift=-50pt, yshift=15] (-103pt, 0pt) edge[dashed] (-74pt, 0pt);
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\end{tikzpicture}
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\end{uncoverenv}
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\end{column}
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\begin{column}[r]{.5\textwidth}
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\reflectbox{
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\scalebox{0.6}[0.6]{
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\begin{tikzpicture}
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\definecolor{outerCircleColour}{RGB}{220, 0, 103}
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\definecolor{innerCircleColour}{RGB}{255, 203, 18}
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\tikzstyle{vertex}=[circle, draw, color=outerCircleColour, ultra thick, minimum size=40pt]
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\tikzstyle{place}=[circle, draw, color=innerCircleColour, fill=innerCircleColour, minimum size=7pt, inner sep=0pt]
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\node [vertex] (a) {};
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\node [vertex, xshift=15pt, yshift=30pt] (b) {};
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\node [vertex, xshift=65pt, yshift=5pt] (c) {};
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\node [vertex, xshift=33pt, yshift=-3pt] (d) {};
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\node [vertex, xshift=85pt, yshift=-25pt] (e) {};
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\node [vertex, xshift=100pt, yshift=2pt] (f) {};
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\node [vertex, xshift=91pt, yshift=32pt] (g) {};
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\node [vertex, xshift=110pt, yshift=-52pt] (h) {};
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\node [vertex, xshift=124pt, yshift=23pt] (i) {};
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\node [vertex, xshift=134pt, yshift=-7pt] (j) {};
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\node [vertex, xshift=164pt, yshift=-14pt] (k) {};
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\node [vertex, xshift=144pt, yshift=-66pt] (l) {};
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\node [vertex, xshift=170pt, yshift=-46pt] (m) {};
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\node [vertex, xshift=201pt, yshift=-59pt] (n) {};
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\node [place] (A) {};
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\node [place, xshift=15pt, yshift=30pt] (B) {};
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\node [place, xshift=65pt, yshift=5pt] (C) {};
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\node [place, xshift=33pt, yshift=-3pt] (D) {};
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\node [place, xshift=85pt, yshift=-25pt] (E) {};
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\node [place, xshift=100pt, yshift=2pt] (F) {};
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\node [place, xshift=91pt, yshift=32pt] (G) {};
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\node [place, xshift=110pt, yshift=-52pt] (H) {};
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\node [place, xshift=124pt, yshift=23pt] (I) {};
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\node [place, xshift=134pt, yshift=-7pt] (J) {};
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\node [place, xshift=164pt, yshift=-14pt] (K) {};
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\node [place, xshift=144pt, yshift=-66pt] (L) {};
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\node [place, xshift=170pt, yshift=-46pt] (M) {};
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\node [place, xshift=201pt, yshift=-59pt] (N) {};
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\path[-, thick, color=gray]
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(A) edge (B)
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(A) edge (D)
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(B) edge (D)
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(C) edge (D)
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(C) edge (E)
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(C) edge (F)
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(C) edge (G)
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(E) edge (F)
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(E) edge (H)
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(F) edge (G)
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(F) edge (I)
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(F) edge (J)
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(G) edge (I)
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(H) edge (L)
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(I) edge (J)
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(J) edge (K)
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(K) edge (M)
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(L) edge (M)
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(M) edge (N);
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\end{tikzpicture}}}
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\end{column}
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\end{columns}
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\end{frame}
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%9
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\begin{frame}{Demo}
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\begin{itemize}
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\item Knotenkarte \href{http://knotenkarte.de}{http://knotenkarte.de}
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\end{itemize}
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\end{frame}
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%10
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\begin{frame}{Sicherheit}
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\begin{itemize}
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\item Da freifunk kein Kennwort nutzt, ist die Funkstrecke zum Zugangspunkt (wie bei allen offenen WLANs) unverschlüsselt
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\item Wie sonst im Netz auch, nutzt nach Möglichkeit Ende-zu-Ende-Verschlüsselung
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\item Verbindung freifunk-Knoten zu Gateway läuft durch VPN und ist verschlüsselt --> kein Zugriff auf das „Heimnetzwerk“ möglich
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\end{itemize}
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\end{frame}
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%11
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\begin{frame}{Störerhaftung}
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\begin{itemize}
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\item Die Zugangspunkte gehen nicht direkt in das Internet
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\item Es wird über das Internet eine verschlüsselte VPN-Verbindung zu den Gateways aufgebaut
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\item Selbst die Gateways sind nicht die Ausgänge ins GBI, sondern bauen wiederum VPNs ins Ausland auf
|
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\end{itemize}
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\end{frame}
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%12
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\begin{frame}{Dienste}
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Implementiert
|
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\begin{itemize}
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|
\item Internet (IPv4 \& IPv6)
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|
\item Stadtweites Intranet (IPv4 \& IPv6)
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|
\item Internet Dienste \href{http://hamburg.freifunk.net/wo-wird-gefunkt\#Dienste}{http://hamburg.freifunk.net/wo-wird-gefunkt\#Dienste}
|
|
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|
|
\item Verbindungen zu anderen Städten und Netzwerken sowie deren Diensten
|
|
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|
\end{itemize}
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|
\end{frame}
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%13
|
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\begin{frame}{Richtfunknetz}
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|
\includegraphics[width=\textwidth]{Bilder/esmarch95}
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\begin{columns}
|
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|
\begin{column}{0.7\textwidth}
|
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|
\begin{itemize}
|
|
|
|
|
\item Heute wird Verbund der Stadteile über VPN-Tunnel durch das Internet realisiert (Abhängigkeit vom Internet und zentraler Gateways)
|
|
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|
|
\item Eine Alternative bietet der Aufbau einer eigenen Infrastruktur mit Richtfunkstrecken von Dach zu Dach
|
|
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|
|
\end{itemize}
|
|
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|
\end{column}
|
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|
\begin{column}{0.3\textwidth}
|
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|
\begin{center}
|
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|
|
\includegraphics[width=.8\textwidth]{Bilder/esmarch95-2}
|
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|
|
\end{center}
|
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|
\end{column}
|
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|
\end{columns}
|
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\end{frame}
|
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%14
|
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|
|
\begin{frame}{Wie kann man mitmachen?}
|
|
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|
|
\begin{itemize}
|
|
|
|
|
\item Alle können Freifunker\textunderscore innen werden, besondere technische Kenntnisse sind nicht erforderlich
|
|
|
|
|
\item Werde ein Teil des Netzwerks, indem du bei dir im Haus einen Freifunk-Knoten aufstellst
|
|
|
|
|
\item Treffen jeden Montag ab 19:00 Uhr in den Rämen des CCCHH, Freitags ab 19:30 Uhr im Attraktor
|
|
|
|
|
\end{itemize}
|
|
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|
\end{frame}
|
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%15
|
|
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|
|
\begin{frame}{Helft mit!}
|
|
|
|
|
\begin{itemize}
|
|
|
|
|
\item \href{http://www.ohrensessel.net/ffhh/graph/total/year}{Stellt mehr Knoten auf}
|
|
|
|
|
\item \href{http://media.hamburg.freifunk.net}{Macht graphische Gestaltung}
|
|
|
|
|
\item Organisiert mit
|
|
|
|
|
\item Betreibt Öffentlichkeitsarbeit
|
|
|
|
|
\item \href{http://hamburg.freifunk.net/wo-wird-gefunkt\#Dienste}{Bietet eigene Dienste an}
|
|
|
|
|
\item Verbreitet die Idee
|
|
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|
|
\end{itemize}
|
|
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|
\end{frame}
|
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%16
|
|
|
|
|
\begin{frame}{Entwickelt mit!}
|
|
|
|
|
\begin{itemize}
|
|
|
|
|
\item \href{http://hamburg.freifunk.net}{Verbessert die Seite}
|
|
|
|
|
\item \href{http://knotenkarte.de}{Fügt der Knotenkarte neue Fähigkeiten hinzu}
|
|
|
|
|
\item \href{http://www.ohrensessel.net/ffhh/total}{Bohrt die Statistiken auf (gamification)}
|
|
|
|
|
\item \href{https://github.com/freifunkhamburg/}{Entwickelt firmware}
|
|
|
|
|
\item \href{http://wiki.freifunk.net/Freifunk_Hamburg\#Technik}{Helft das Netz zu administrieren}
|
|
|
|
|
\end{itemize}
|
|
|
|
|
\end{frame}
|
|
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|
%17
|
|
|
|
|
\begin{frame}{Vielen Dank!}
|
|
|
|
|
\begin{columns}
|
|
|
|
|
\begin{column}{0.6\textwidth}
|
|
|
|
|
\begin{itemize}
|
|
|
|
|
\item Netz: hamburg.freifunk.net
|
|
|
|
|
\item Mail: kontakt@hamburg.freifunk.net
|
|
|
|
|
\end{itemize}
|
|
|
|
|
\end{column}
|
|
|
|
|
\begin{column}{0.4\textwidth}
|
|
|
|
|
\begin{center}
|
|
|
|
|
\includegraphics[width=0.5\textwidth]{Bilder/cc-by}
|
|
|
|
|
\end{center}
|
|
|
|
|
\end{column}
|
|
|
|
|
\end{columns}
|
|
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|
|
\end{frame}
|
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|
\end{document}
|
