Cisco Virtual Security Gateway (VSG) brings security capabilities to Cisco Nexus 1000V series switches.
Fraudulent Certificates Could Allow Spoofing
Microsoft warned that COMODO issued 9 fraudulent certificates to a third party whose identity was not sufficiently validated. These fraudulent certificates could be used to spoof content, perform phishing attacks, or perform man-in-the-middle attacks against all web browser users. According to Microsoft Security Advisory, the followig web properties are affected: login.live.com mail.google.com http://www.google.com login.yahoo.com (3 … Continue reading Fraudulent Certificates Could Allow Spoofing
Using Site to Site VPN As Proxy
I worked for an IT consulting company before. The headquater of the company locates in Denver. One of our clients is in Chicago. The project for that client will be done 50% by the Denver office and the other 50% by the oversea development center. According to the client’s security policy, only American IP address … Continue reading Using Site to Site VPN As Proxy
MTU May Impact VPN Connection Performance
Have you ever experienced that the site2site VPN connection performance is poor despite the Internet connection between the two sides is good and both equipment works properly? I met this situation once. And it turned out to be caused by the settings of MTU (Maximum Transfer Unit). The default MTU of Ethernet is 1,500 Bytes. … Continue reading MTU May Impact VPN Connection Performance
Firefox 4.0
As a fan of Firefox, I have been following it for 6, 7 years. A window poped up this morning showing the Firefox 4.0 is available now after I lauched the Firefox. With no doubt, I upgraded my Firefox to 4.0 right away. I simply poked around and found the obvious improvements – faster speed … Continue reading Firefox 4.0
Jackie Chen's IT Workshop 