lyf's blog

LVS Netfilter 持续增加……LVS Linux Virtual Server Tutorialhttp://www.ultramonkey.org/papers/lvs_tutorial/html/Netfilter Netfilter源码分析-我来抛砖，望能引玉http://bbs.chinaunix.net/thread-2196854-1-1.html

The root zone Who operates them Where they are Who is responsible for them Where does the root zone come from How do resolvers find root servers Fault tolerance 关于DNS中的root name servers，转自

什么是top-level domains 13个 root server clusters 什么是top-level domainsAs of 2015, IANA distinguishes the following groups of top-level domains:infrastructure top-level domain (ARPA)generic top-level dom

An authoritative name server provides actual answer to your DNS queries such as – mail server IP address or web site IP address (A resource record). It provides original and definitive answers to DNS q

以example.com为例，top-level domain为.com，然后是second-level domain，example.com.如图所示，对于example.com的解析可以分为下面几步：client向本地dns server请求解析example.com的ip地址（client请求是recursive的）；本地dns server去root server(TLD，top-lev

场景如下： 小型局域网，有数台ubuntu，hostname为ubuntu01,02….等等(ubuntu上都装了SAMBA )，其他都是windows。在windows上可以通过hostname(例如ubuntu03)ping通其他主机，而在linux上则不行。如下图，找到些有用的信息，Windows uses NetBIOS names, and such protocol, being a