mountain lion
we all know DNS Probably is what，All correspondence between domain names and IP addresses must be relied on to translate，Like IP and Mac address this need ARP protocol as，In order to distinguish，We call this is called DNS uDNS，That isUnicast DNS。
so，relatively，It is multicast (multicast) DNS，For Apple, it's osx，Multicast DNS[……]
Unknowingly，From that day to sign up for Gmail，Six or seven years now been the scene。Vaguely remember that time not yet Google+；Then there is Google Reader。
Later, my friend bought a G1，Then I put my generous to his Gmail account to use the address book。
after that，This account has returned to my hands，I used the two accompanying[……]
2018On April 13 update，Add a link fail2ban Advanced Configuration Tutorial，Updated command。
Gerber drop-off site-wide migration to wills，As long as 15 yuan per month minimum，Support me consider myInvitation coderegistered，Gave $10 (Together 60 Multi-block RMB) discount! 😚
Recently purchased a vps route to learn ...... Yes! You read that right[……]
As early as in 2008，Apple's operating system is broke so a security incident。
That is the system program ARDAgent.app。This application is a system level，It has the highest level of authority - the root / administrator privileges。
That is，It do anything on the computer，They are permitted does not require，You do not need to know。This program is Ma[……]
Time Machine on Mac is a good thing，Allows you to have a regret at various unexpected happens you can eat。Other，If your backup is stored in which external，Once the computer lost，Can quickly restore the previous state of use on the new equipment。
but，This thing always disadvantageous，Ok，Once you use Time Machine to restore your computer completely，Then all previous backups can not[……]
before，Jitouch been using very smoothly，Various functions very well，But since upgraded Yosemite，Has been at boot time pop pop this privilege issue，Prompt you to go to "safe" inside the permission to open。
The fact that in the corresponding window which，And no Jitouch options，This makes very upset。
[……]
This is my article published Wei Feng，Badly written，But seal the glaze is still praised Canada for this，This article makes long hung on the first page of the section of the mini rabbit ~ so ...... XD I'll come back to your own blog，In order to allow more people to see，Ah ...... This is the essence of a perfect school ~
As an undergraduate Luzhu，Especially in this type of a variety of professional engineering books we understand，Usually I like to read books and newspapers，so…[……]
After the addition of the Yosemite beta program，Routing the first time to upgrade it，After upgrading to want to open at hand cheap trim，Okay, I admit that in fact is not turned on and basically not much difference between the actual feelings on，Forgive my obsessive-compulsive disorder。
Open this post in accordance with the dry，Very smooth process，The results were tragic
Restart the progress bar and hung up halfway，Display a white prohibit icon，Even cmd + s such a single-user mode can not be entered，The same white prohibit icon。I do not know the previous version, such as the Mavericks will likewise，But I think this should be the previously common white apple + unlimited chrysanthemum。[……]
In normal use，Sometimes all of a suddenMac WIFI icon turns grey，Then top showing an exclamation mark，Clicking on it you will see that it prompts you "Warn：No Internet connection』，This feature is excellent value，It let you do not need to wait to not open Web page, find lost Mac network connection。
of course，Bad news here，Sometimes you will find that even the icon appears，Warning letters in there[……]
