diff --git a/sisr1/tp04_scripts_admin/EOF b/sisr1/tp04_scripts_admin/EOF
new file mode 100644
index 0000000..e69de29
diff --git a/sisr1/tp05-Installation_d_un_proxy/dnsfwd.service b/sisr1/tp05-Installation_d_un_proxy/dnsfwd.service
new file mode 100644
index 0000000..f81a3d4
--- /dev/null
+++ b/sisr1/tp05-Installation_d_un_proxy/dnsfwd.service
@@ -0,0 +1,13 @@
+[Unit]
+ 
+Description=execute /root/dnsfwd.sh
+ 
+After=default.target
+ 
+[Service]
+ 
+ExecStart=bash /root/dnsfwd.sh
+ 
+[Install]
+ 
+WantedBy=default.target
diff --git a/sisr1/tp05-Installation_d_un_proxy/dnsfwd.sh b/sisr1/tp05-Installation_d_un_proxy/dnsfwd.sh
new file mode 100644
index 0000000..b7efcbc
--- /dev/null
+++ b/sisr1/tp05-Installation_d_un_proxy/dnsfwd.sh
@@ -0,0 +1,11 @@
+!/bin/bash
+echo "1" > /proc/sys/net/ipv4/ip_forward
+nft add table dnsfwd
+nft add chain dnsfwd prerouting {type nat hook prerouting priority 0 \; }
+nft add chain dnsfwd postrouting {type nat hook postrouting priority 0 \; }
+nft add rule dnsfwd postrouting tcp dport 53 masquerade
+nft add rule dnsfwd postrouting udp dport 53 masquerade
+nft add rule dnsfwd prerouting tcp dport 53 masquerade
+nft add rule dnsfwd prerouting udp dport 53 masquerade
+nft add rule dnsfwd prerouting ct state established,related accept
+nft add rule dnsfwd postrouting ct state established,related accept