Gathering Network Information

This page is about gathering network information.

Whois
Whois gathers valuable registration information about the domain, nameservers, registrant name, address, agents and much more.

$ whois google.co.uk Domain Name: google.co.uk Registrant: Google Inc Registrant's Address: 2400 Bayshore Parkway Mountain View 94043 CA Registrant's Agent: Alldomains.com, Inc. t/a Alldomains.com/NetCorps [Tag = ALLDOMAINS] URL: http://www.alldomains.com Relevant Dates: Registered on: 14-Feb-1999 Renewal Date: 14-Feb-2005 Last updated: 18-Oct-2002 Registration Status: Registered until renewal date. Name servers listed in order: ns.google.com 216.239.32.10 ns2.google.com 216.239.34.10

For further information and terms of use please see http://www.nic.uk/whois

Ping
$ ping google.co.uk Ping google.co.uk (216.239.57.104) ... 1 Addr:216.239.57.104, RTT: 149ms, TTL: 236 2 Addr:216.239.57.104, RTT: 148ms, TTL: 236 3 Addr:216.239.57.104, RTT: 148ms, TTL: 236 4 Addr:216.239.57.104, RTT: 148ms, TTL: 236 5 Addr:216.239.57.104, RTT: 148ms, TTL: 236 6 Addr:216.239.57.104, RTT: 148ms, TTL: 236 7 Addr:216.239.57.104, RTT: 148ms, TTL: 236 8 Addr:216.239.57.104, RTT: 148ms, TTL: 236 9 Addr:216.239.57.104, RTT: 148ms, TTL: 236 10 Addr:216.239.57.104, RTT: 148ms, TTL: 236

DNS
You can look up the IP of a URL with nslookup $ nslookup google.co.uk Server:        194.25.2.129 Address:       194.25.2.129#53 Non-authoritative answer: Name:  google.co.uk Address: 72.14.221.104 Name:  google.co.uk Address: 216.239.59.104 Name:  google.co.uk Address: 66.249.93.104

Trace Tool
The traceroute tool will allow you to trace the location of the machine by going through all hops.

Example: $ traceroute wiki.linuxquestions.org traceroute to wiki.linuxquestions.org (207.44.182.114), 30 hops max, 40 byte packets 1 * * *  2  217.0.67.50 (217.0.67.50)  46.581 ms   50.950 ms   51.428 ms  3  linx-gw13.LON.GB.net.DTAG.DE (62.154.5.38)  63.952 ms   64.326 ms * 4 62.156.139.254 (62.156.139.254)  65.324 ms   66.032 ms   67.199 ms  5  xe-0-2-0.r23.londen03.uk.bb.gin.ntt.net (129.250.2.66)  69.938 ms   72.809 ms   76.191 ms  6  p64-1-0-0.r20.nycmny01.us.bb.gin.ntt.net (129.250.3.254)  143.149 ms   148.302 ms   151.163 ms  7  as-0.r21.asbnva01.us.bb.gin.ntt.net (129.250.2.9)  142.727 ms   140.432 ms   142.740 ms  8  p64-1-1-0.r20.dllstx09.us.bb.gin.ntt.net (129.250.5.24)  179.323 ms   183.963 ms   193.108 ms  9  p64-1-0-0.r20.hstntx01.us.bb.gin.ntt.net (129.250.4.71)  182.511 ms   191.886 ms   194.509 ms 10  xe-4-1.r03.hstntx01.us.bb.gin.ntt.net (129.250.2.229)  195.134 ms   195.614 ms   196.246 ms 11  ge-1.ev1.hstntx01.us.bb.gin.ntt.net (129.250.10.70)  196.754 ms   200.003 ms   200.629 ms 12  ivhou-207-218-245-29.ev1servers.net (207.218.245.29)  201.220 ms   201.739 ms   202.372 ms 13  ivhou-207-218-245-120.ev1servers.net (207.218.245.120)  168.366 ms   171.603 ms   172.693 ms 14  mx.linuxquestions.org (207.44.182.114)  169.538 ms   174.797 ms   177.053 ms $

GOOGLE
By using google you can search for specific information about a company, you could even search the companies site for more information using the following:

site:www.google.co.uk passwd

This will search google.co.uk for all pages with passwd on or files, a index of these will be displayed once found.