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Method to produce load-balancing for both inbound and outbound. Iptables -t mangle -A PREROUTING -m nth -every 10 -j DROPĢ) Unique rule for every packet. Module that will allow you to match every Nth packet encountered.īy default there are 16 different counters that can be used.ġ) Match ever Nth packet, and only the Nth packet. This option adds CONFIG_IP_NF_MATCH_NTH, which supplies a match To the POSTROUTING chain to alter the source of outgoing connections, PREROUTING chain to alter the destination of incoming connections, It creates a static 1:1 mapping of the network address, This adds CONFIG_IP_NF_TARGET_NETMAP option, which provides a target for Target that sends dropped packets to userspace via a netlink socket.
#Netmap config Patch#
This patch adds CONFIG_IP_NF_TARGET_NETLINK, which adds a NETLINK Status: Working, will not go into main kernel Note that a portrange uses up 2 port values. # iptables -A FORWARD -p tcp -m mport -ports 23:42,65 This module is an enhanced multiport match. If there is an extension-header after the fragmentation header, we can match Warning: there is a problem with the fragmented packets! The soft mode means that the packet contains the header.
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Proto means that the packet has got a protocol payload. Hop-by-hop,ipv6-opts,ipv6-route,ipv6-frag,ah,esp,ipv6-nonxt,protocol Ip6tables -t filter -A INPUT -m ipv6header -header route -soft -j ACCEPT Ip6tables -t filter -A INPUT -m ipv6header -header 44 -j ACCEPT Ip6tables -t filter -A INPUT -m ipv6header -header frag -j ACCEPT The usage of the module is as follows (e.g.): The list can be found from the help message of the match This match allows you to match the specialty headers of an IPv6 Status: Under development, please test it!
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# iptables -t mangle -A PREROUTING -j IPV4OPTSSTRIP The target doesn't take any option, and therefore is extremly easy to use : Module that will allow you to strip all the IP options from a packet. This option adds CONFIG_IP_NF_TARGET_IPV4OPTSSTRIP, which supplies a target I tested -ts and -rr, but not source routing issues, nor the router-alert Will drop packets with the timestamp flag. $ iptables -A input -m ipv4options -ts -j DROP Will drop packets with the record-route flag. $ iptables -A input -m ipv4options -rr -j DROP To match a packet with at least one IP option, or no IP option To match packets with the router-alert option. To match packets with no flag for source routing. To match packets with the flag loose source routing. To match packets with the flag strict source routing. This option adds CONFIG_IP_NF_MATCH_IPV4OPTIONS, Iptables -p tcp -syn -dport 80 -m iplimit -iplimit-above 16 \ # limit the nr of parallel http requests to 16 per class C sized Iptables -p tcp -syn -dport 23 -m iplimit ! -iplimit-above 2 -j ACCEPT # you can also match the other way around: Iptables -p tcp -syn -dport 23 -m iplimit -iplimit-above 2 -j REJECT # allow 2 telnet connections per client host Number of parallel TCP connections to a server per client IP address This adds CONFIG_IP_NF_MATCH_IPLIMIT match allows you to restrict the fraglen length total length of this header This match extension (`frag') allow you to select the packet based on theįileds of the fragmentation header of the IPv6 packets. ahlen length total length of this headerįrag6 Range of SPIs inside AH or ESP headers of IPv6 packets. These two match extensions (`ah' and `esp') allow you to match a