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+# iptables
+```bash
+iptables -A OUTPUT -d 10.203.60.151/32 -p tcp -j DROP
+service iptables save
+service iptables restart
+```
+
+# firewalld
+```bash
+firewall-cmd --permanent --direct --add-rule ipv4 filter OUTPUT 1 -p tcp --dport 80 -d 10.202.233.70/32 -j DROP
+firewall-cmd --reload
+```
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