| Linux Commands | Details |
| # telnet | User interface to telnet protocol, used to communicate with another host |
| # ssh | It provides a secured encrypted connection between two host over an insecure network |
| # traceroute | Trace the route |
| # dig | DNS Look up |
| # nslookup | Query internet domain name server |
| # netstat | Print network connections, routing tables, interface statistics ..etc |
| # nmap | detects live host, open ports on host
Detects Software and version to the respective porsts Detects OS, hw address & sw version Detects vulnerability and security holes |
| # w | show who is logged on and what they are doing |
| # scp | secure copy – remote file copy program |
| # route | show/manipulate the ip routing table |
| # arp | Arp manipulates or displays the kernel’s IPv4 network neighbor cache. Used to find MAC address of network neighbor for a given IPv4 address |
| # rarp | |
| # ipchains | |
| # iptables / ip6tables | administration tool for IPV4/IPv6 packet filtering and NAT |
| # interfaces | /etc/network/interfaces contains network interface configuration information for the ifup and ifdown commands |
| # ethtool | Query or control network driver and hardware settings particularly for wired Ethernet devices. devname is the name of the network device on which ethtool should operate |
| # hostname | show or set the system’s host name |
| # domainname | show or set the system’s NIS/YP domain name |
| # ypdomainname | show or set the system’s NIS/YP domain name |
| # nisdomainname | show or set the system’s NIS/YP domain name |
| # dnsdomainname | show the system’s DNS domain name |
| # ping | send ICMP ECHO_REQUEST to network hosts |
| # showmount | displays a list of all clients that have remotely mounted a file system from a specified machine in the Host parameter |
| # tcpdump | dump traffic on a network |
| # tracepath, tracepath6 | traces path to a network host discovering MTU along this path |
| # whois | query for domainname |
| # nmcli | command-line tool for controlling NetworkManager |
| # nm-tool | utility to report NetworkManager state, devices & wireless networks |
| # nm-online | To find out whether we are online. |
| # nm-setting | description of settings and parameters of NetworkManagers connections |
| # netlink | netlink macros |
| # libnetlink | a library for accessing the netlink service |
| # rtnetlink | macros to manipulate rtnetlink message |
| # nmcli dev status | print network status |
| # ifconfig | configure network interface |
| # ifup or ifdown | bring a network interface up/down |
| # ip | show / manipulate routing, device, policy routing and tunnels |
| # ip address | protocol address management |
| # NetworkManager | network management daemons |
| Wireless Network Commands | |
| # wpa_cli | used to query current status, change configuration, trigger events, and request interactive user input.
Show authentication status, security mode, dot11, dot1x MIBs |
| # wpa_supplicant | wifi-protected access client |
| # crda | send to the kernel a wireless regulatory domain for a given ISO |
| # iwconfig | configure wireless network interface |
| # nmcli con | Display wifi/wireless connection entry |
| # nmcli wifi | show wifi adaptor |
| # iw | show/manipulate wireless devices and their configuration |
| # iwlist | get more detailed wireless information from a wireless interface |
| # iwspy | get wireless statistics from specific nodes |
| # iwevent | display wireless events generated by drivers and setting changes |
| # iwpriv | configure optional parameters of a wireless network interface |
| # wireless | wireless tools & wireless extension, used to change the configuration of wireless LAN networking interfaces on the fly |
| # iwgetid | used to find out the NWID, ESSID or AP/Cell address of the wireless network that is currently used. We can get the same information using iwconfig |