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How to stop WordPress user registration spams

September. 14. 2012 by admin –  Category: Computers, Internet (No Comments)

After our web software was upgraded to latest WordPress, we got about 600 user registration spams for the last two days, we do have Theme My Login and SI CAPTCHA Anti-Spam plugins on register page, that does not stop spams, after some testing, I have found the problem, the Theme My Login plugin create new register page, leave the default pages /wp-signup.php and /wp-login.php pages […]

IPv6 deployment

September. 3. 2012 by lawnz –  Category: Computers, Internet, Technology (No Comments)

IPv6 addresses has been around for so many years, I have not seen any real deployments in the world of computer communication, but it finally takes off on 4G LTE cell phones, I use my new Samsung Galaxy S3 mobile phone to search “my ip address” on Google, the link found shows my public IP address is IPv6 type address, I almost […]

New Generation Firewall BlackRidge Eclipse

August. 28. 2012 by lawnz –  Category: Business, Internet, Technology (No Comments)

Firewalls are commonly used in offices to protect resources on networks, traditional firewalls are designed based on network IP address, and TCP/UDP port, an access list in a firewall checks IP address and/or TCP/UDP port, what if source IP was spoofed, or you travel from one location to another, your laptop pc will get a new IP address from the local Internet […]

Network speed of Yahoo vs Google vs Bing

July. 10. 2012 by lawnz –  Category: Computers, Internet (No Comments)

I did some tests on network speed of Yahoo, Google, and Bing, first test was done from my office in Santa Clara, CA. second test is done from web server hosted at pair.com in Pittsburgh, PA. the test result shows Microsoft Bing network speed is fastest, first set of test data is done from Santa Clara, CA: ping www.yahoo.com PING ds-any-fp3-real.wa1.b.yahoo.com (72.30.38.140) 56(84) bytes […]

While I was looking for network storage device, I found out Netgear Readynas prodcuts support DLNA, http://www.amazon.com/NETGEAR-ReadyNAS-Diskless-Attached-RNDP400U/dp/B004AM61Y8/ref=sr_1_5?ie=UTF8&qid=1340761489&sr=8-5&keywords=readynas I have two smart TVs, I saw DLNA messages on the screen, I never bother to find out more about DLNA until I read this on wikipedia.org, http://en.wikipedia.org/wiki/Dlna “The Digital Living Network Alliance (DLNA) is a non-profit collaborative trade organization established by Sony in June […]

Turn Off Facebook Notifications

February. 13. 2012 by lawnz –  Category: Complaints, Internet (No Comments) Turn Off Facebook Notifications

I received a lot of Facebook notification emails, I don’t use Facebook much, never touched the default settings, I found the hidden Notifications link, see the attached picture, click on Account Settings link on the drop down menu, then click on Notifications, I can disable most of notifications.         update Feb 14, 2012 – I am still getting friend’s update notifications, I already […]

Web Hosting

February. 9. 2012 by admin –  Category: Computers, Internet (No Comments)

I have been looking for web hosting companies, I found the performance data “uptime” which is from uptime command to show server load in 1, 5, 15 minutes, not the BS number 99.9999% up time, say your server is 100% up, but with overloaded application running, that up time does not do any good,  read this blog about pair.com, http://www.webhostingtalk.com/showthread.php?s=&threadid=152564&highlight=pair “This is […]

Vlan And Website Network

February. 9. 2012 by admin –  Category: Computers, Internet (No Comments)

I designed and implemented couple of website networks which have server systems, routers, switches, and load balancer, etc. I had to decide to have Vlan in website network or not, I decided not to, the reason is Vlan requires configurations, in case something bad happens to swtiches, I can replace the fault switches in a very short time, this is very […]

Yahoo Email

January. 2. 2012 by lawnz –  Category: Complaints, Internet (No Comments)

My friend sent me an invitaion for a dinner party to my Yahoo email, I read it, but reply message got problem, I re-tried three times, still didn’t work, I click reply link, it just sat there thinking …, I had to call my friend’s phone number to tell him about the dinner. I told my friend my Yahoo reply email […]

Craigslist model

January. 1. 2012 by lawnz –  Category: Business, Internet, Work (No Comments)

I am working for a high tech company, the founder owns one patent for our product, we have a great team of engineers including some with PhD degree, one of my coworkers is still in graduate school, he probably knows more than most of his professors, our products consist of both hardware and software, especially very sophisticated software, many of […]


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