Month: February 2016

孜孜不倦的黑客 / Tireless Attacker

doge scream 日了个特大号的狗了！ Holy super-sized shit! 刚才查看 fail2ban 日志的时候，被满满300多行日志吓尿 book。基本上从昨天中午开始就有个来自俄罗斯的 IP 一直在孜孜不倦地尝试进行 SSH 登录。通常被 ban 过几次之后攻击者就放弃了，哪会像这个家伙一样死心眼。而且我用的是非默认端口，这货应该是先扫描了端口boom。 I was scared by fail2ban log of my server — more than 300 lines of log showing a same Russia IP address trying to SSH into my server since yesterday noon. Usually attacker will give up after got banned by fail2ban several times, but this guy is tireless. And the port I’m using is not the default SSH port, clearly this piece of shit did a port scan before attack. Continue reading 孜孜不倦的黑客 / Tireless Attacker

Problem: AMD FX 6300 and Asrock 970 Extreme4 cannot run DDR3 1866

Just finished an upgrade to one of my computers, and the upgrading process didn't go flawlessly. That's why I decided to write this post.

Prologue

This computer which I just upgraded was built in mid 2013 with an Asrock 970 Extreme4 motherboard (because I was want to make use of an old AMD Athlon II X4 620 CPU). Because the price of DDR3 SDRAM was soaring in that time so I only installed two 4GB DDR3 1333 (PC3-10600) modules.

This computer has been used as a KVM virtualization server for a long time and I upgraded the CPU to FX-6300 recently to achieve higher performance. Obviously, the 8GB RAM has become insufficient for this role now. The price of DDR3 memory is very low these days, and for another reason because I’ve got some coupons so I thought it’s time to do an upgrade. I purchased four Kingston Fury DDR3 1866 (PC3-14900) 8GB modules online, and was delivered yesterday. The price was good, cheaper than 1600 (PC3-12800) modules. Continue reading Problem: AMD FX 6300 and Asrock 970 Extreme4 cannot run DDR3 1866