Multiple ports can be specified like '80 443 465' 1.
Match incoming traffic directed at the given destination port or port range, if relevant proto is specified. With no dest zone, this is treated as an input rule! Match incoming traffic directed to the specified destination IP address. If specified, the rule applies to forwarded traffic otherwise, it is treated as input rule. Refers to one of the defined zone names, or * for any zone. Values can be either exact ICMP type numbers or type names (see below). The number 0 is equivalent to all.įor protocol icmp select specific ICMP types to match. A protocol name from /etc/protocols is also allowed. Can be one (or several when using list syntax) of tcp, udp, udplite, icmp, esp, ah, sctp, or all or it can be a numeric value, representing one of these protocols or a different one. Match incoming traffic using the given protocol.
Match incoming traffic from the specified source port or port range, if relevant proto is specified.
#FIREWALL BUILDER DDWRT DEFAULT IPTABLES MAC#
Match incoming traffic from the specified MAC address Match incoming traffic from the specified source IP address If omitted, the rule applies to output traffic. Has no effect if disabled (0) in the defaults section (see above). Note that these options are passed to both source and destination classification rules, therefor direction-specific options like -dport should not be used here - in this case the extra_src and extra_dest options should be used instead.Įxtra arguments passed directly to iptables for source classification rules.Įxtra arguments passed directly to iptables for destination classification rules.Įnable generation of custom rule chain hooks for user generated rules. List of IP subnets attached to this zone.Įxtra arguments passed directly to iptables. Otherwise network is preferable and device should be avoided. This is specifically suitable for undeclared interfaces which lack built-in netifd support such as OpenVPN. tun+ or ppp+ to match any TUN or PPP interface. List of 元 network interface names attached to this zone, e.g. Limits the amount of log messages per interval. Defaults to any, but automatically degrades to ipv4 or ipv6 if respective addresses are listed in the same section.īit field to enable logging in the filter and/or mangle tables, bit 0 = filter, bit 1 = mangle. The protocol family ( ipv4, ipv6 or any) these iptables rules are for. The DROP rules are supposed to prevent NAT leakage (see commit in firewall3).Įnable MSS clamping for outgoing zone traffic.ĭefault policy ( ACCEPT, REJECT, DROP) for incoming zone traffic.ĭefault policy ( ACCEPT, REJECT, DROP) for forwarded zone traffic.ĭefault policy ( ACCEPT, REJECT, DROP) for outgoing zone traffic. Negation is possible by prefixing the subnet with ! multiple subnets are allowed.ĭo not add DROP INVALID rules, if masquerading is used. Limit masquerading to the given destination subnets. Negation is possible by prefixing the subnet with ! multiple subnets are allowed. Limit masquerading to the given source subnets. This is typically enabled on the wan zone. Specifies whether outgoing zone traffic should be masqueraded. Alias interfaces defined in the network config cannot be used as valid 'standalone' networks. If omitted and neither extra* options, subnets nor devices are given, the value of name is used by default. List of interfaces attached to this zone. 11 characters is the maximum working firewall zone name length. Seems to determine method of packet rejection ( tcp reset, or drop, vs ICMP Destination Unreachable, or closed) (depends on flow_offloading and hw capability)ĭefined in firewall3/options.h. (decrease cpu load / increase routing throughput)Įnable hardware flow offloading for connections.
#FIREWALL BUILDER DDWRT DEFAULT IPTABLES SOFTWARE#
BCP38 also make use of these hooks.Įnable software flow offloading for connections. User rules would be typically stored in er but some packages e.g.
See ip-sysctl.txt.Įnable generation of custom rule chain hooks for user generated rules. Set burst limit for SYN packets above which the traffic is considered a flood if it exceeds the allowed rate.Įnable/Disable Explicit Congestion Notification. Set rate limit (packets/second) for SYN packets above which the traffic is considered a flood. not matching any active connection).Įnable SYN flood protection (obsoleted by synflood_protect setting). Set policy for the OUTPUT chain of the filter table.ĭrop invalid packets (e.g. Set policy for the FORWARD chain of the filter table. Set policy for the INPUT chain of the filter table.
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