I ran tiger on my debian 6 system and saw these in my report. Are these much of a problem? How do i fix them? This is my VPS which i use to run websites.
# Checking network configuration --WARN-- [lin012w] The system accepts ICMP redirection messages --FAIL-- [lin013f] The system is not protected against Syn flooding attacks --FAIL-- [lin014f] The system permits the transmission of IP packets with invalid addresses --FAIL-- [lin016f] The system permits source routing from incoming packets --WARN-- [lin017w] The system is not configured to log suspicious (martian) packets --FAIL-- [lin019f] The system does not have any local firewall rules configured