network structure: machine1 >> firewall >>>- Internet -> machine2 nfs_server Step 1: on nfs_server, add line in /etc/exports: nfs_dir 127.0.0.1(rw,async,insecur) Also, add line in /etc/sysconfig/nfs MOUNTD_PORT <port_number3 The port_number3 is a large number, for example, 32334, Then do "service nfs restart" This allows the nfs mount point is accessible from the box itself; Step 2: […]

From certain number of linux SAMBA and higher, “strict locking =1” is the default. When such SAMBA share is mapped on older versions of windows, the files would be not able to be modified – you can create new file, modify it. However, when you try to save, it will return “The process cannot access […]

The link in /usr/lib64/libGL.so was not updated to the NVidia version. Just remove the broken link and ln -s /usr/lib64/libGL.so.VER.VER /usr/lib64/libGL.so, where VER.VER is the NVidia driver version. For other missing libs that targeting a broken link, same strategy can be applied.

yum whatprovides ‘*/’

For some strange reason the flash folder in C:\WINDOWS\system32\Macromed was locked by explorer.exe. Once the Adobe Flash Player is installed in this folder, the locking prevented it from being copied into both Firefox’s plug in folder in C:\Program Files\Mozilla Firefox\plugins and Iexplore’s plugin folder in C:\Program Files\Internet Explorer\PLUGINS, such that from the plugin point of […]

It is possible that a dll/ocx was not properly registered. Try this: regsvr32.exe COMDLG32.OCX regsvr32.exe YourOCX.OCX regsvr32.exe Yourdll.dll

Check C:\Documents and Settings\Your User\Application Data\Mozilla\Firefox\Profiles\Your Profile.default\user.js Hijacked page may appear there.

Found a virus disguise itself in a windows/installer/{2a19006b-67c6-b3d2-bc82-88e444232c7b} and load into srvchost.exe as n and @. Don not know what it is. Killed.

ps aux | awk ‘\$8 ~ /D/ { print \$0 }’ watch -n 1 “(ps aux | awk ‘\$8 ~ /D/ { print \$0 }’)”

1. Install Jailkit, CentOS rpm available in rpmforge repo. 2. mkdir -p # to define your jail root 3. jk_init -v -j ssh # to allow ssh in your jail 4. jk_jailuser -j # to move the user into the jail 5. Edit /etc/jailkit/jk_init.ini and /etc/jailkit/jk_socketd.ini # to match your system 6. jk_cp -v -f […]