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Add ability to SYNPROXY connections
It is useful to protect against TCP SYN flood attacks and port-scanners
set firewall global-options syn-cookies 'enable'
set firewall ipv4 input filter rule 10 action 'synproxy'
set firewall ipv4 input filter rule 10 destination port '22'
set firewall ipv4 input filter rule 10 inbound-interface interface-name 'eth1'
set firewall ipv4 input filter rule 10 protocol 'tcp'
set firewall ipv4 input filter rule 10 synproxy tcp mss '1460'
set firewall ipv4 input filter rule 10 synproxy tcp window-scale '7'
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forward chain and few matchers. Should be extended in the future.
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If a parameter is required is determined from the Python string on commit.
This "indicator" is not used consistently and sometimes missing, or added where
it is not required anymore due to Python script improvement/rewrite.
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Add XML for configuration mode firewall. Used for future rewriting it to Python style.
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