Create custom iptables rules

[Guest]

[Karel2017]

Hello, I want to create custom iptables rules, but it doesnt work properly. For example when I create rule "iptables -A OUTGOINGFW -s 192.168.2.45/32 -o eth2 -j REJECT --reject-with icmp-port-unreachable" (same rule as generaterd from endian webinterface) it doesnt work. What am I doing wrong? Do I need manually restart iptables and how? Is there any other way how to add custom rules in endian? I need to control rules from cli.