IP blocking using iptables

Hi all, i want to block access of clients to specific IP addresses, which iptables chain am i supposed to apply the REJECT rule?

fw3 IPv4 configuration examples > Block LAN-side access

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i tried the uci way but the config was not creating the new iptables rule which i wrote down the UCI config. Even after executing the shell after committing the changes.

Post here the following in preformatted text </>

uci export firewall; fw3 restart; iptables-save -c

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Check the below please for firewall export

Also check the last rule blocking a specific IP

uci export firewall
package firewall

 

config defaults
    option syn_flood '1'
    option input 'ACCEPT'
    option output 'ACCEPT'
    option forward 'REJECT'
    option disabled '0'

 

config zone
    option name 'nat'
    list network 'nat'
    option input 'ACCEPT'
    option output 'ACCEPT'
    option forward 'ACCEPT'

 

config zone
    option name 'lan'
    list network 'lan'
    list network 'wan6'
    option input 'REJECT'
    option output 'ACCEPT'
    option forward 'REJECT'
    option masq '1'
    option mtu_fix '1'

 

config forwarding
    option src 'nat'
    option dest 'lan'

 

config rule
    option name 'Allow-DHCP-Renew'
    option src 'lan'
    option proto 'udp'
    option dest_port '68'
    option target 'ACCEPT'
    option family 'ipv4'

 

config rule
    option name 'Allow-Ping'
    option src 'lan'
    option proto 'icmp'
    option icmp_type 'echo-request'
    option family 'ipv4'
    option target 'ACCEPT'

 

config rule
    option name 'Allow-IGMP'
    option src 'lan'
    option proto 'igmp'
    option family 'ipv4'
    option target 'ACCEPT'

 

config rule
    option name 'Allow-DHCPv6'
    option src 'lan'
    option proto 'udp'
    option src_ip 'fe80::/10'
    option src_port '547'
    option dest_ip 'fe80::/10'
    option dest_port '546'
    option family 'ipv6'
    option target 'ACCEPT'

 

config rule
    option name 'Allow-MLD'
    option src 'lan'
    option proto 'icmp'
    option src_ip 'fe80::/10'
    list icmp_type '130/0'
    list icmp_type '131/0'
    list icmp_type '132/0'
    list icmp_type '143/0'
    option family 'ipv6'
    option target 'ACCEPT'

 

config rule
    option name 'Allow-ICMPv6-Input'
    option src 'lan'
    option proto 'icmp'
    list icmp_type 'echo-request'
    list icmp_type 'echo-reply'
    list icmp_type 'destination-unreachable'
    list icmp_type 'packet-too-big'
    list icmp_type 'time-exceeded'
    list icmp_type 'bad-header'
    list icmp_type 'unknown-header-type'
    list icmp_type 'router-solicitation'
    list icmp_type 'neighbour-solicitation'
    list icmp_type 'router-advertisement'
    list icmp_type 'neighbour-advertisement'
    option limit '1000/sec'
    option family 'ipv6'
    option target 'ACCEPT'

 

config rule
    option name 'Allow-ICMPv6-Forward'
    option src 'lan'
    option dest '*'
    option proto 'icmp'
    list icmp_type 'echo-request'
    list icmp_type 'echo-reply'
    list icmp_type 'destination-unreachable'
    list icmp_type 'packet-too-big'
    list icmp_type 'time-exceeded'
    list icmp_type 'bad-header'
    list icmp_type 'unknown-header-type'
    option limit '1000/sec'
    option family 'ipv6'
    option target 'ACCEPT'

 

config include
    option path '/etc/firewall.user'

 

config rule
    option src 'lan'
    option dest 'nat'
    option proto 'esp'
    option target 'ACCEPT'

 

config rule
    option src 'lan'
    option dest 'nat'
    option dest_port '500'
    option proto 'udp'
    option target 'ACCEPT'

 

config rule
    option name 'Allow-SSH'
    option target 'ACCEPT'
    option src 'lan'
    option dest_port '22'
    option proto 'tcp'
    option family 'ipv4'

 

config rule
    option name 'Allow-SSH-v6'
    option target 'ACCEPT'
    option src 'lan'
    option dest_port '22'
    option proto 'tcp'
    option family 'ipv6'

 

config rule
    option name 'Allow-gdb'
    option target 'ACCEPT'
    option src 'lan'
    option dest_port '2000'
    option proto 'tcp'
    option family 'ipv4'

 

config rule
    option name 'Allow-localGUI'
    option target 'ACCEPT'
    option src 'lan'
    option dest_port '80'
    option proto 'tcp'
    option family 'ipv4'

 

config rule
    option name 'Drop_outgoing_single_IP'
    option family 'ipv4'
    option proto 'all'
    option src '*'
    option dest '*'
    option dest_ip '8.8.4.4'
    option target 'DROP'