diff --git a/sisr1/tp03-reseau-prive/srv-admin/nat/nat.sh b/sisr1/tp03-reseau-prive/srv-admin/nat/nat.sh
new file mode 100644
index 0000000..04b2a95
--- /dev/null
+++ b/sisr1/tp03-reseau-prive/srv-admin/nat/nat.sh
@@ -0,0 +1,6 @@
+#!/bin/bash
+echo "1" > /proc/sys/net/ipv4/ip_forward
+nft add table basic_nat_table
+nft add chain basic_nat_table prerouting {type nat hook prerouting priority 0 \; }
+nft add chain basic_nat_table postrouting {type nat hook postrouting priority 0 \; }
+nft add rule basic_nat_table postrouting masquerade
\ No newline at end of file