diff --git a/IT/linux/IPTables.md b/IT/linux/IPTables.md
index b0770d8..b852ab2 100644
--- a/IT/linux/IPTables.md
+++ b/IT/linux/IPTables.md
@@ -2,7 +2,9 @@
 
 ## Forward un port sur un autre
 
+```sh
 iptables -t nat -A PREROUTING -p udp -m udp --dport 53 -j REDIRECT --to-ports 8600
 iptables -t nat -A PREROUTING -p tcp -m tcp --dport 53 -j REDIRECT --to-ports 8600
 iptables -t nat -A OUTPUT -d localhost -p udp -m udp --dport 53 -j REDIRECT --to-ports 8600
 iptables -t nat -A OUTPUT -d localhost -p tcp -m tcp --dport 53 -j REDIRECT --to-ports 8600
+```