http://www.softpedia.com/get/Network-Tools/

http://en.wikipedia.org/wiki/Traceroute

http://centralops.net/co/

http://centralops.net/co/Traceroute.aspx

Domain Dossier

Investigate domains and IP addresses. Get registrant information, DNS records, and more.

Domain Check

See if a domain is available.

Email Dossier

Validate and investigate email addresses.

Browser Mirror

See what your browser reveals.

Ping

See if a host is reachable.

Traceroute

Trace the network path from this server to another.

NsLookup

Look up various domain resource records with this version of the classic NsLookup utility.

AutoWhois

Get Whois records automatically for domains worldwide.

TcpQuery

Grab a web page, look up a domain, and more.

AnalyzePath

Do a simple, graphical traceroute.



Zone Transfer Countermeasures



Name Server Lookup (NSLOOKUP) command to query the Domain Name Service for information about domain names and IP addresses.
http://www.livinginternet.com/i/ia_tools_nslookup.htm


http://support.microsoft.com/kb/200525

DNS zone transfer is a mechanism to replicate DNS data from one DNS server to another. You can add your own DNS server IP address here and set it as a slave (or secondary) server for your zone
http://manual.intl.indoglobal.com/ch03s10.html

DNS zone transfer, also sometimes known by its (most common) opcode mnemonic AXFR, is a type of DNS transaction. It is one of the many mechanisms available for administrators to employ for replicating the databases containing the DNS data across a set of DNS servers. Zone transfer comes in two flavors, full (opcode AXFR) and incremental (IXFR). Nearly universal at one time, it is now becoming less popular in favor of the use of other database replication mechanisms that modern DNS server packages provide

http://en.wikipedia.org/wiki/DNS_zone_transfer

An anonymizer or an anonymous proxy is a tool that attempts to make activity on the Internet untraceable. It is a proxy server computer that acts as an intermediary and privacy shield between a client computer and the rest of the Internet. It accesses the Internet on the user's behalf, protecting personal information by hiding the client computer's identifying information.^{[1]
http://en.wikipedia.org/wiki/Anonymizer}
http://somebody.net/services.html

Best Free Internet Anonymizers
http://webwarper.net/
https://www.megaproxy.com/
http://www.w3privacy.com/
http://www.anonymizer.ru/
http://www.the-cloak.com/
http://www.psurf.net/
http://anonymouse.ws/
http://easysecurity4u.com/
http://hotsurflive.com/
http://newanonymous.com/
http://nu3ga.com/
http://www.guardster.com/
http://www.proxyweb.net/
http://www.long999.com/
http://www.phproxy.info/
http://www.proxy121.com/
http://www.livreproxy.com/
http://www.hidemyass.com/
http://www.shadowsurf.com/
http://www.proxyforall.com
http://proxify.com/
http://www.snoopblocker.com/
http://www.online-proxy.net/

http://www.bb4.org/
http://www.quest.com/big-brother/
http://en.wikipedia.org/wiki/Big_Brother_(software)