Openwrt iptables
Configuração padrão da firewall iptables openwrt com Attitude Adjustment e base mvwrt2014
config defaults
option syn_flood 1
option input ACCEPT
option output ACCEPT
option forward REJECT
# Uncomment this line to disable ipv6 rules
# option disable_ipv6 1
config zone
option name lan
list network 'lan'
option input ACCEPT
option output ACCEPT
option forward REJECT
config zone
option name wan
list network 'wan'
list network 'wan6'
option input REJECT
option output ACCEPT
option forward REJECT
option masq 1
option mtu_fix 1
config forwarding
option src lan
option dest wan
config rule
# We need to accept udp packets on port 68,
# see https://dev.openwrt.org/ticket/4108
option name Allow-DHCP-Renew
option src wan
option proto udp
option dest_port 68
option target ACCEPT
option family ipv4
config rule
# Allow IPv4 ping
option name Allow-Ping
option src wan
option proto icmp
option icmp_type echo-request
option family ipv4
option target ACCEPT
config rule
# Allow DHCPv6 replies
# see https://dev.openwrt.org/ticket/10381
option name Allow-DHCPv6
option src wan
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
# Allow essential incoming IPv6 ICMP traffic
option name Allow-ICMPv6-Input
option src wan
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
# Allow essential forwarded IPv6 ICMP traffic
option name Allow-ICMPv6-Forward
option src wan
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
# include a file with users custom iptables rules
option path /etc/firewall.user
### EXAMPLE CONFIG SECTIONS # do not allow a specific ip to access wan #config rule # option src lan # option src_ip 192.168.45.2 # option dest wan # option proto tcp # option target REJECT
# block a specific mac on wan #config rule # option dest wan # option src_mac 00:11:22:33:44:66 # option target REJECT
# block incoming ICMP traffic on a zone #config rule # option src lan # option proto ICMP # option target DROP
# port redirect port coming in on wan to lan #config redirect # option src wan # option src_dport 80 # option dest lan # option dest_ip 192.168.16.235 # option dest_port 80 # option proto tcp
# port redirect of remapped ssh port (22001) on wan #config redirect # option src wan # option src_dport 22001 # option dest lan # option dest_port 22 # option proto tcp
# allow IPsec/ESP and ISAKMP passthrough #config rule # option src wan # option dest lan # option protocol esp # option target ACCEPT
#config rule # option src wan # option dest lan # option src_port 500 # option dest_port 500 # option proto udp # option target ACCEPT
### FULL CONFIG SECTIONS #config rule # option src lan # option src_ip 192.168.45.2 # option src_mac 00:11:22:33:44:55 # option src_port 80 # option dest wan # option dest_ip 194.25.2.129 # option dest_port 120 # option proto tcp # option target REJECT
#config redirect # option src lan # option src_ip 192.168.45.2 # option src_mac 00:11:22:33:44:55 # option src_port 1024 # option src_dport 80 # option dest_ip 194.25.2.129 # option dest_port 120 # option proto tcp