diff --git a/cheat/network.md b/cheat/network.md
index ac73d34..b93eb6b 100644
--- a/cheat/network.md
+++ b/cheat/network.md
@@ -2,3 +2,9 @@
 
 * `curl ifconfig.co`
 * `curl ident.me`
+
+### Block an IP with `iptables` 
+* `iptables -A INPUT -s 35.196.128.87 -j DROP`
+
+### Undo the previous rule
+* `iptables -D INPUT -s 35.196.128.87 -j DROP`