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filename=$(shell basename $(shell pwd))
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all: snapshot
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\documentclass[a4paper,french,12pt]{article}
\title{Architectures et infrastructures sécurisées \\ TP1 \\ ACL}
\author{Alexandre Chen, Tunui Franken, Thomas Jubault}
\date{Dernière compilation~: \today{} à \currenttime}
\usepackage{styles}
\usepackage{enumitem}
\begin{document}
\maketitle
\clearpage
\tableofcontents
\clearpage
\section{Standard ACLs}
\includegraphics[width=\linewidth]{./img/architecture-1.png}
\begin{enumerate}
\item Reproduisez cette architecture en utilisant Packet Tracer.
\item Configurer les adresses IP comme dans la figure.
\begin{lstlisting}[gobble=12]
R1(config)#interface GigabitEthernet0/1
R1(config-if)#ip address 172.16.2.254 255.255.255.0
R1(config-if)#no shutdown
...
\end{lstlisting}
\item Configurer le routage statique pour permettre aux PCs et aux serveurs de se pinguer entre eux.
\begin{lstlisting}[gobble=12]
R1(config)#ip route 192.168.1.0 255.255.255.0 203.0.113.2
R1(config)#ip route 192.168.2.0 255.255.255.0 203.0.113.2
R2(config)#ip route 172.16.1.0 255.255.255.0 203.0.113.1
R2(config)#ip route 172.16.2.0 255.255.255.0 203.0.113.1
\end{lstlisting}
\item Pinguer entre les PCs et les serveurs.
\begin{lstlisting}[gobble=12]
C:\>ping 192.168.1.100
Pinging 192.168.1.100 with 32 bytes of data:
Reply from 192.168.1.100: bytes=32 time<1ms TTL=126
Reply from 192.168.1.100: bytes=32 time<1ms TTL=126
Reply from 192.168.1.100: bytes=32 time=1ms TTL=126
Reply from 192.168.1.100: bytes=32 time<1ms TTL=126
Ping statistics for 192.168.1.100:
Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 0ms, Maximum = 1ms, Average = 0ms
\end{lstlisting}
\item Configurer OSPF dans R1 et R2.
\begin{lstlisting}[gobble=12]
R1(config)#router ospf 1
R1(config-router)#network 172.16.1.0 0.0.0.255 area 0
R1(config-router)#network 172.16.2.0 0.0.0.255 area 0
R1(config-router)#network 203.0.113.0 0.0.0.3 area 0
R2(config)#router ospf 1
R2(config-router)#network 192.168.1.0 0.0.0.255 area 0
R2(config-router)#network 192.168.2.0 0.0.0.255 area 0
R2(config-router)#network 203.0.113.0 0.0.0.3 area 0
R1#show ip ospf neighbor
Neighbor ID Pri State Dead Time Address Interface
203.0.113.2 1 FULL/DR 00:00:32 203.0.113.2 GigabitEthernet0/2
\end{lstlisting}
\item Quel algorithme de routage sera utilisé~?
OSPF utilise l'algorithme de Dijkstra mais il ne sera pas utilisé.
Les routes statiques seront utilisées car leur distance administrative est plus faible que OSPF\@.
\item Faites le nécessaire pour que R1 et R2 utilisent OSPF\@.
\begin{lstlisting}[gobble=12]
R1(config)#no ip route 192.168.1.0 255.255.255.0 203.0.113.2
R1(config)#no ip route 192.168.2.0 255.255.255.0 203.0.113.2
R2(config)#no ip route 172.16.1.0 255.255.255.0 203.0.113.1
R2(config)#no ip route 172.16.2.0 255.255.255.0 203.0.113.1
\end{lstlisting}
\item Configurez des ACL nnumérotées standard sur R1 et des ACL nommées standard sur R2 afin de respecter les stratégies réseau suivantes~:
\begin{enumerate}
\item Seuls PC1 et PC3 peuvent accéder à 192.168.1.0/24.
\begin{lstlisting}[gobble=20]
R2(config)#ip access-list standard rule_A
R2(config-std-nacl)#permit 172.16.1.1
R2(config-std-nacl)#permit 172.16.2.1
R2(config-std-nacl)#deny any
R2(config-std-nacl)#int g0/0
R2(config-if)#ip access-group rule_A out
\end{lstlisting}
\item Les hôtes de 172.16.2.0/24 ne peuvent pas accéder à 192.168.2.0/24.
\begin{lstlisting}[gobble=20]
R2(config)#ip access-list standard rule_B
R2(config-std-nacl)#deny 172.16.2.0 0.0.0.255
R2(config-std-nacl)#permit any
R2(config-std-nacl)#int g0/1
R2(config-if)#ip access-group rule_B out
\end{lstlisting}
\item 172.16.1.0/24 ne peut pas accéder à 172.16.2.0/24.
\begin{lstlisting}[gobble=20]
R1(config)#ip access-list standard 1
R1(config-std-nacl)#deny 172.16.1.0 0.0.0.255
R1(config-std-nacl)#permit any
R1(config-std-nacl)#int g0/1
R1(config-if)#ip access-group 1 out
\end{lstlisting}
\item 172.16.2.0/24 ne peut pas accéder à 172.16.1.0/24.
\begin{lstlisting}[gobble=20]
R1(config)#ip access-list standard 2
R1(config-std-nacl)#deny 172.16.2.0 0.0.0.255
R1(config-std-nacl)#permit any
R1(config-std-nacl)#int g0/0
R1(config-if)#ip access-group 2 out
\end{lstlisting}
\end{enumerate}
\item Testez votre configuration.
Depuis PC1~:
\begin{lstlisting}[gobble=12]
C:\>ping 192.168.1.100
Pinging 192.168.1.100 with 32 bytes of data:
Reply from 192.168.1.100: bytes=32 time=12ms TTL=126
Reply from 192.168.1.100: bytes=32 time<1ms TTL=126
Reply from 192.168.1.100: bytes=32 time<1ms TTL=126
Reply from 192.168.1.100: bytes=32 time=39ms TTL=126
Ping statistics for 192.168.1.100:
Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 0ms, Maximum = 39ms, Average = 12ms
\end{lstlisting}
Depuis PC2~:
\begin{lstlisting}[gobble=12]
C:\>ping 192.168.1.100
Pinging 192.168.1.100 with 32 bytes of data:
Reply from 203.0.113.2: Destination host unreachable.
Reply from 203.0.113.2: Destination host unreachable.
Reply from 203.0.113.2: Destination host unreachable.
Reply from 203.0.113.2: Destination host unreachable.
Ping statistics for 192.168.1.100:
Packets: Sent = 4, Received = 0, Lost = 4 (100% loss),
\end{lstlisting}
Depuis 172.16.2.0~:
\begin{lstlisting}[gobble=12]
C:\>ping 192.168.1.100
Pinging 192.168.1.100 with 32 bytes of data:
Reply from 203.0.113.2: Destination host unreachable.
Reply from 203.0.113.2: Destination host unreachable.
Reply from 203.0.113.2: Destination host unreachable.
Reply from 203.0.113.2: Destination host unreachable.
Ping statistics for 192.168.1.100:
Packets: Sent = 4, Received = 0, Lost = 4 (100% loss),
\end{lstlisting}
Depuis 172.16.2.0~:
\begin{lstlisting}[gobble=12]
C:\>ping 172.16.1.2
Pinging 172.16.1.2 with 32 bytes of data:
Reply from 172.16.2.254: Destination host unreachable.
Reply from 172.16.2.254: Destination host unreachable.
Reply from 172.16.2.254: Destination host unreachable.
Reply from 172.16.2.254: Destination host unreachable.
Ping statistics for 172.16.1.2:
Packets: Sent = 4, Received = 0, Lost = 4 (100% loss),
\end{lstlisting}
\item Analyser le résultat de la commande \texttt{show access-lists}.
\begin{lstlisting}[gobble=12]
R1#show access-lists
Standard IP access list 1
10 deny 172.16.1.0 0.0.0.255 (4 match(es))
20 permit any
Standard IP access list 2
10 deny 172.16.2.0 0.0.0.255 (2 match(es))
20 permit any
R2#show access-lists
Standard IP access list rule_A
10 permit host 172.16.1.1 (4 match(es))
20 permit host 172.16.2.1 (1 match(es))
30 deny any (4 match(es))
Standard IP access list rule_B
10 deny 172.16.2.0 0.0.0.255 (3 match(es))
20 permit any (2 match(es))
\end{lstlisting}
Les règles ont bien été rajoutées, et on peut voir des matches correspondants aux tentatives de ping.
\end{enumerate}
\section{Extended ACLs}
\includegraphics[width=\linewidth]{./img/architecture-2.png}
\begin{enumerate}
\item On va reprendre la même topologie de l'exercice 1.
\item Configurer le service DNS sur SRV1.
\includegraphics[width=\linewidth]{./img/dns.png}
\item Configurer un serveur WEB sur SRV2.
\includegraphics[width=\linewidth]{./img/web.png}
\item Pinguer entre les PCs et SRV1 en utilisant l'adresse IP puis le hostname.
\begin{lstlisting}[gobble=12]
C:\>ping efrei.com
Pinging 192.168.2.100 with 32 bytes of data:
Reply from 192.168.2.100: bytes=32 time<1ms TTL=126
Reply from 192.168.2.100: bytes=32 time=14ms TTL=126
Reply from 192.168.2.100: bytes=32 time<1ms TTL=126
Reply from 192.168.2.100: bytes=32 time=1ms TTL=126
Ping statistics for 192.168.2.100:
Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 0ms, Maximum = 14ms, Average = 3ms
\end{lstlisting}
\end{enumerate}
\end{document}

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