Install ulogd2 by entering the following commands in the terminal:
sudo apt update sudo apt install ulogd2
Description:
Netfilter Userspace Logging Daemon
ulogd is an advanced netfilter logging daemon. It can act as a replacement for syslog for logging netfilter ruleset violations (via the NFLOG or ULOG iptables targets), can gather per-connection accounting using NFCT, or gather per-rule accounting using NFACCT. Output can be sent to plain text log files, a variety of SQL database formats, XML files, pcap files, syslog, and many other formats. . Support for the DBI database abstraction layer, MySQL, PostgreSQL and SQLite 3 databases is in separate packages called ulogd2-dbi, ulogd2-mysql, ulogd2-pgsql and ulogd2-sqlite3 respectively. Support for writing to JSON files is the ulogd2-json package. Support for writing to pcap files is in the ulogd2-pcap package.
Homepage: http://www.netfilter.org/projects/ulogd/
Version: 2.0.5-5
Section: universe/net