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How To Use psad to Detect Network Intrusion Attempts on an Jan 10, 2014 Why do some TCP reset packets show up in my iptables log I'm not sure that this is all there is to it. Most connections are reset without a message in my log: grep -c UNKNOWN /var/www/kern.log gives me 69, while iptables -vL says that 2691 packages matched the REJECT rule. According to the above, shouldn't those numbers be equal? – tarleb Aug 14 '15 at 14:14 How to configure firewall in Ubuntu 18.04 - LinuxConfig.org Dec 17, 2018
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How to Configure a Firewall with UFW on Ubuntu 18.04
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