How Firewalls (Security Gateways) Handle the Packets? (Traffic Flow)
Different firewall (security gateway) vendor has different solution to handle the passing traffic. This post compiles some useful Internet posts…
Gartner Magic Quadrant for Mobile Data Protection (2015, 2014, 2013, 2012, 2011…, 2006)
According to Gartner, “Mobile Data Protection (MDP) systems and procedures are needed to protect business data privacy, meet regulatory and…
My Top Network Security Tools
I listed some of my favorite and useful Internet websites and network tools in previous post which has been used in…
Troubleshooting Java HTTPS Security Warning Message
One of our Internal Website is always having a Security Warning message when using Internet Explorer https to it, but…
CVE-2015-0235: GHOST – A Critical Vulnerability in the Glibc Library
GHOST is a ‘buffer overflow’ bug affecting the gethostbyname() and gethostbyname2() function calls in the glibc library. If a remote…
Poodle : New SSL 3.0 Bug (CVE-2014-3566)
Oct 14 2014, this bug CVE_2014-3566 has been found as a subtle but significant security weakness in version 3 of…
Shellshock (Bash Computer Bug) Exploited – Responding from Venders
Heartbleed Extension Vulnerability caused lots of worries for Internet system. The affects still do not go away and now Shellshock coming.…
Reset SonicWall NSA 4500 to Factory Default Configuration
SonicWall NSA 4500 is Next-Generation Firewall features integrate intrusion prevention, gateway anti-virus, anti-spyware and URL filtering with application intelligence and…
PKI Basic Flow Chart
PKI = Public Key Infrastructure（公钥基础设施） 基础设施： 就是一个普适性基础，它在一个大环境里起着基本框架的作用，，设施基本原理共通，操作简便，只要遵循基本原则，不同的实体就可以方便地使用基础设施提供的服务。 公钥基础设施： 用非对称密码算法原理和技术是实现并提供安全服务的具有通用性的安全基础设施。 公钥证书： 用户的身份与之所持有的公钥的结合，在结合之前，由一个可信任的权威机构——认证机构（CA）来证实用户的身份。然后由可信任的CA对该用户身份及对应公钥相结合的证书进行数字签名，用来证明证书的有效性。 一个PKI系统主要包括： 认证机构，证书库，密钥备份及恢复系统，证书撤销处理系统，PKI应用接口系统。 PKI主要包括四个部分： X.509格式证书，证书注销列表CRL；…
