What network ports are in use on Ubuntu

# netstat -antp
Active Internet connections (servers and established)
Proto Recv-Q Send-Q Local Address           Foreign Address         State       PID/Program name
tcp        0      0 0.0.0.0:22              0.0.0.0:*               LISTEN      786/sshd       
tcp        0      0 127.0.0.1:631           0.0.0.0:*               LISTEN      19450/cupsd    
tcp        1     65 192.168.1.100:52798     173.194.43.3:443        CLOSING     -              
tcp        1     65 192.168.1.100:44886     74.125.131.191:443      CLOSING     -              
tcp        0      0 192.168.1.100:49985     74.125.226.201:443      ESTABLISHED 1598/firefox   
tcp        0      0 192.168.1.100:43419     173.194.43.22:443       ESTABLISHED 1598/firefox   
tcp        0      0 192.168.1.100:58352     74.125.226.207:80       ESTABLISHED 1598/firefox   
tcp        0      0 192.168.1.100:50740     173.194.43.44:80        ESTABLISHED 1598/firefox   
tcp        0      0 192.168.1.100:33700     173.194.43.34:80        ESTABLISHED 1598/firefox   
tcp        0      0 192.168.1.100:54980     173.194.43.47:80        TIME_WAIT   -              
tcp        0      0 192.168.1.100:60045     173.194.43.14:443       ESTABLISHED 1598/firefox   
tcp        1     65 192.168.1.100:41279     173.194.32.15:443       CLOSING     -              
tcp        0      0 192.168.1.100:45569     74.125.226.205:443      ESTABLISHED 1598/firefox   
tcp        0      0 192.168.1.100:33902     173.194.73.191:80       ESTABLISHED 1598/firefox   
tcp        0      0 192.168.1.100:41559     173.194.43.58:80        ESTABLISHED 1598/firefox   
tcp        0      0 192.168.1.100:54972     173.194.43.47:80        TIME_WAIT   -              
tcp        0      0 192.168.1.100:36286     74.125.226.207:443      ESTABLISHED 1598/firefox   
tcp        0      0 192.168.1.100:47506     74.125.226.205:80       ESTABLISHED 1598/firefox   
tcp        0      0 192.168.1.100:47507     74.125.226.205:80       ESTABLISHED 1598/firefox   
tcp6       0      0 :::22                   :::*                    LISTEN      786/sshd        


# ps -fp 1598
UID        PID  PPID  C STIME TTY          TIME CMD
dennis    1598     1 23 06:15 ?        00:08:53 /usr/lib/firefox/firefox