10-01-2001
Netstat
Giving netstat command on the prompt gives commands such as
localhost.43592 localhost.35237 32768 0 32768 0 TIME_WAIT
localhost.43594 localhost.43595 32768 0 32768 0 TIME_WAIT
localhost.43598 localhost.35237 32768 0 32768 0 TIME_WAIT
localhost.43600 localhost.43601 32768 0 32768 0 TIME_WAIT
localhost.43604 localhost.35237 32768 0 32768 0 ESTABLISHED
localhost.35237 localhost.43604 32768 0 32768 0 ESTABLISHED
loc...etc
What are these connections anyway ....
How do i know wat these ports are doin .....
Will closing these ports do any harm
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LEARN ABOUT CENTOS
sepolicy-network
sepolicy-network(8) sepolicy-network(8)
NAME
sepolicy-network - Examine the SELinux Policy and generate a network report
SYNOPSIS
sepolicy network [-h] (-l | -a application [application ...] | -p PORT [PORT ...] | -t TYPE [TYPE ...] | -d DOMAIN [DOMAIN ...])
DESCRIPTION
Use sepolicy network to examine SELinux Policy and generate network reports.
OPTIONS
-a, --application
Generate a report listing the ports to which the specified init application is allowed to connect and or bind.
-d, --domain
Generate a report listing the ports to which the specified domain is allowed to connect and or bind.
-l, --list
List all Network Port Types defined in SELinux Policy
-h, --help
Display help message
-t, --type
Generate a report listing the port numbers associate with the specified SELinux port type.
-p, --port
Generate a report listing the SELinux port types associate with the specified port number.
EXAMPLES
sepolicy network -p 22
22: tcp ssh_port_t 22
22: udp reserved_port_t 1-511
22: tcp reserved_port_t 1-511
sepolicy network -a /usr/sbin/sshd
sshd_t: tcp name_connect
111 (portmap_port_t)
53 (dns_port_t)
88, 750, 4444 (kerberos_port_t)
9080 (ocsp_port_t)
9180, 9701, 9443-9447 (pki_ca_port_t)
32768-61000 (ephemeral_port_t)
all ports < 1024 (reserved_port_type)
all ports with out defined types (port_t)
sshd_t: tcp name_bind
22 (ssh_port_t)
5900-5983, 5985-5999 (vnc_port_t)
6000-6020 (xserver_port_t)
32768-61000 (ephemeral_port_t)
all ports > 500 and < 1024 (rpc_port_type)
all ports with out defined types (port_t)
sshd_t: udp name_bind
32768-61000 (ephemeral_port_t)
all ports > 500 and < 1024 (rpc_port_type)
all ports with out defined types (port_t)
AUTHOR
This man page was written by Daniel Walsh <dwalsh@redhat.com>
SEE ALSO
sepolicy(8), selinux(8), semanage(8)
20121005 sepolicy-network(8)