debian - IPTables: How to log and set a specific log file
Ubuntu Manpage: iptables — administration tool for IPv4 --log-level level Level of logging (numeric or see syslog.conf(5)). --log-prefix prefix Prefix log messages with the specified prefix; up to 29 letters long, and useful for distinguishing messages in the logs. --log-tcp-sequence Log TCP sequence numbers. This is a security risk if the log is readable by users. Make iptables rules persistent after reboot on Ubuntu 18 Jul 22, 2020 Log iptables Messages to a Separate File with rsyslog The first line means send all messages that start with “iptables: ” to /var/log/iptables.log. The second line means discard the messages that were matched in the previous line. The second line is of course optional, but it saves the trouble of explicitly filtering out firewall logs from subsequent syslog rules. Quick Minimal Firewall on Ubuntu With Iptables
Set Up default UFW policies. To view status of ufw, type: sudo ufw status. Sample outputs: Status: …
Jun 24, 2017 UFW - Community Help Wiki - Ubuntu Mar 31, 2017
How To Set Up a Firewall Using Iptables on Ubuntu 14.04
How To Set Up a Firewall Using Iptables on Ubuntu 14.04