Wednesday, August 17, 2011

Websites each system admin should know

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System administrators will have to do a lot of stuffs by themselves. But there are a lot of online tools which are helpful and they save a lot of time. But most of the administrators don't know them. Here is a list I know of. If you know any please comment with their use, I'll include them.

To know your public ip. It shows location and other details too.
http://whatismyipaddress.com/

For checking nameservers, mx record, A record, PTR record and other DNS details.
http://www.intodns.com/

Example:
http://www.intodns.com/randeeppr.me

For checking the accessibility of your ip address or url. It gives ping results from many parts of the world.
http://www.just-ping.com/

For checking the domain details such as owner of the domain and contact details.
http://www.whois.sc/

Example:
http://whois.domaintools.com/randeeppr.me

To check whether your ip is blacklisted or not
http://www.mxtoolbox.com/blacklists.aspx

To check the loading time of the url from different parts of world
http://alertra.com/spotcheck_do

To check the domain propagation, NS, MX, A Record etc from different parts of the world at the moment.
http://www.whatsmydns.net/

To check the cpanel license is expired or not
http://www.cpanel.net/apps/verify/

To paste the error log and make a link to exchange
http://pastebin.com/

To encrypt a string with md5 algorithm
http://md5-encryption.com/

To decrypt a string with md5 algorithm
http://md5-decrypter.com/

To check the validity and other details of SSL certificates
http://www.digicert.com/help/
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