AWS Free Usage Tier (Per Month): 750 hours of Amazon EC2 Linux Micro Instance usage (613 MB of memory and 32-bit and 64-bit platform support) – enough hours to run continuously each month* 750 hours of Amazon EC2 Microsoft Windows Server Micro Instance usage […]
LPI 102
I passed my Exam today, 650/800 My Notes: xwininfo – shows X11 color depth GPG send a encrypt file – use the user publick key to encrypt locale – Get locale-specific information, dont display Timezone gok – on-screen keyboard echo […]
Linux Kernel Modules
> Manage/Query kernel and kernel modules at runtime Key files, terms and utilities include: /lib/modules/kernelversion/modules.dep – Kernel module interdependencies /etc/modules.conf & /etc/conf.modules – modprobe configuration file (new and old) Commands | Description depmod | Determine module dependencies insmod | Insert […]
Pass-the-hash from memory
This is the most impressive and scariest hack I ever seen. The tool called WCE, Windows Credential Editor can get any password from a Windows box, from memory! So even if you login in the server 3months ago, the hack […]
TCP Send-Queue
Script to monitor the TCP Send-Queue. Send-Q is retrived from the netstat cmd. ex.: #netstat -anp |more Active Internet connections (servers and established) Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name The script syntax example: #check_sendq -w 900 […]
How to connect to a NFS server share
The RedHat linux client that will connect to a NFS server. Needs to have portmap and if you dont want dynamic ports, enter static ports into /etc/sysconfig/nfs, for example: RQUOTAD_PORT=875 LOCKD_TCPPORT=32803 LOCKD_UDPPORT=32769 MOUNTD_PORT=892 STATD_PORT=662 STATD_OUTGOING_PORT=2020 1. Start portmap service portmap […]
Warriors of the Net
This is the coolest ever made video about, how the internet works! About the IP,Router,Switches,Packets,Proxy,Browsers,Pings etc… It explains pretty much all 7 layers of OSI model. Also known of the “Dawn of the Net”: