This repository has been archived by the owner on May 23, 2019. It is now read-only.
Exploring the listening network services
A clean installation of CIF on Ubuntu 14.04 should create a network profile similar to this:
sudo netstat -lnptu
Active Internet connections (only servers)
Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name
tcp 0 0 192.168.1.12:53 0.0.0.0:* LISTEN 898/named (Bind9)
tcp 0 0 127.0.0.1:53 0.0.0.0:* LISTEN 898/named (Bind9)
tcp 0 0 0.0.0.0:22 0.0.0.0:* LISTEN 818/sshd
tcp 0 0 0.0.0.0:25 0.0.0.0:* LISTEN 1030/master (Postfix)
tcp 0 0 127.0.0.1:953 0.0.0.0:* LISTEN 898/named (Bind9)
tcp 0 0 0.0.0.0:4961 0.0.0.0:* LISTEN 1548/perl
tcp 0 0 0.0.0.0:4963 0.0.0.0:* LISTEN 1548/perl
tcp6 0 0 :::9200 :::* LISTEN 1264/java
tcp6 0 0 :::80 :::* LISTEN 1108/apache2
tcp6 0 0 :::9300 :::* LISTEN 1264/java
tcp6 0 0 :::53 :::* LISTEN 898/named (Bind9)
tcp6 0 0 :::22 :::* LISTEN 818/sshd
tcp6 0 0 :::25 :::* LISTEN 1030/master (Postfix)
tcp6 0 0 ::1:953 :::* LISTEN 898/named (Bind9)
tcp6 0 0 :::443 :::* LISTEN 1108/apache2
tcp6 0 0 :::5000 :::* LISTEN 1624/cif.psgi
- 25/tcp -> smtp
- 53/tcp -> dns
- 80/tcp -> http
- 443/tcp -> https
- 5000/tcp -> wsgi
- 9200/tcp -> elastic search
If no firewall rules are detected, the firewall is enabled and the two ports open to the world are 22 (ssh) and 443 (https).
