AIX UNIX: Enabling Jumbo Frames

March 14, 2010, 5:39 am

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How do I setup jumbo frames under IBM AIX operating systems using command line tools?

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Debian / Ubuntu Linux: Install and Configure Shoreline Firewall (Shorewall)

August 17, 2012, 3:04 pm

≫ Next: Linux FTP Server Traffic Control And Throttle Port 21

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I know how to setup a firewall under RHEL / Fedora and CentOS Linux quickly. How do I setup a host-based firewall under Debian or Ubuntu Linux server or desktop system? How do I install Shoreline firewall (Shorewall) utility to build firewall based on the Netfilter under Debian or Ubuntu Linux?

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Linux FTP Server Traffic Control And Throttle Port 21

September 9, 2012, 3:37 am

≫ Next: Linux View Process Address Space

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I've setup FTP server at port 21 and 40000:41000 as range of passive ftp. How do I control outgoing traffic for the FTP server/service running on my Debian/CentOS/Ubuntu Linux server?

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Linux View Process Address Space

October 31, 2012, 1:10 pm

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How do I view process address space under Linux operating systems?

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HowTo: Linux Rename a RAID Array From md0 to md2

November 20, 2012, 1:08 pm

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I am moving a raid array called /dev/md0 from serverA to serverB. On serverB /dev/md0 is already in use. How do I rename a RAID array from /dev/md0 to /dev/md2?

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MySQL Server: Bind To Multiple IP Address

December 5, 2012, 11:49 pm

≫ Next: CentOS / RHEL: Install ipset Administration Tool For IP Sets and IPTables

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I have MySQL database system running on FreeBSD. The server has multiple ip address. The mysqld used by many websites hosted on two other CentOS based servers. I would like to bind MySQL sever running on Unix / Linux server to more than one IP address such as 202.54.1.2, 202.54.1.10, and 202.54.1.15. How can I bind mysqld to multiple ips?

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CentOS / RHEL: Install ipset Administration Tool For IP Sets and IPTables

December 10, 2012, 11:36 am

≫ Next: Linux Configure Firewall Using Shorewall Under RHEL / CentOS

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How do I install the ipset extension to Netfilter/iptables on Red Hat Enterprise Linux / CentOS Linux v6.x?

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Linux Configure Firewall Using Shorewall Under RHEL / CentOS

December 19, 2012, 12:42 pm

≫ Next: Linux Iptables Setup Firewall For a Web Server

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A properly configured firewall can greatly increase the security of RHEL / CentOS based system. How do I configure a shorewall based firewall for CentOS or Red Hat Enterprise Linux system with an Internet connection? How do I install and configure shorewall to protect the following small business network?

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Linux Iptables Setup Firewall For a Web Server

January 15, 2013, 12:05 am

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I have setup an Apache web server on CentOS Linux. How do I configure firewall to allow or block access? How do I setup firewall for a web server under RHEL or CentOS Linux v6.x?

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Nginx: Block URL Access (wp-admin/wp-login.php) To All Except One IP Address

April 14, 2013, 2:07 am

≫ Next: Debian / Ubuntu: Set Port Knocking With Knockd and Iptables

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I am the small business owner and runs my own web-site. I have noticed increased cracking activity against by blog. What's the best way to block WordPress URLs such as example.com/blog/wp-login.php and example.com/blog/wp-admin/ in the nginx web-server?

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Debian / Ubuntu: Set Port Knocking With Knockd and Iptables

May 1, 2013, 11:51 am

≫ Next: Linux WARNING: Duplicate VG name server1 LVM2 Error and Solution

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My iptables based firewall allows only port TCP 80 and 443. I also need tcp port # 22, but I do not have static IP at my home. How do I open and close TCP port #22 on demand under Debian or Ubuntu Linux based server systems? How do I install a port-knock server called knockd and configure it with iptables to open tcp port #22 or any other ports?

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Linux WARNING: Duplicate VG name server1 LVM2 Error and Solution

May 5, 2013, 10:55 am

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I recently added SSD to my home server and reloaded the operating system. However, when I try to access my dm-crypt based old disk, I am getting the following error: Reading all physical volumes. This may take a while... WARNING: Duplicate VG name server01: Existing bc7YA8-eEXt-1aA1-OHTr-zJkA-ucd0-DsbRTc (created here) takes precedence over RIKiar-w3MG-Gzh5-VFWq-bkRT-9IFc-ia8k87 WARNING: Duplicate VG name server01: Existing bc7YA8-eEXt-1aA1-OHTr-zJkA-ucd0-DsbRTc (created here) takes precedence over RIKiar-w3MG-Gzh5-VFWq-bkRT-9IFc-ia8k87 Found volume group "server01" using metadata type lvm2 Found volume group "server01" using metadata type lvm2 The problem is my volume group. I set to to server01 on both old and new hard disk. How can I rename old LVM2? How do I access my old hard disk?

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Debian Linux: Upgrade v6.0.x Squeeze to v7.0.0 Wheezy

May 5, 2013, 12:06 pm

≫ Next: Howto: Linux Add or Remove a Linux Kernel Modules / Drivers

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Recently Debian Linux version 7.0 ("Wheezy") released. This version shipped with many new features - improvements to multimedia support, improved security through hardening flags and the OpenStack suite and the Xen Cloud Platform to name a few. How do I upgrades from Debian Linux version 6.x.x (squeeze) to the latest version 7.0.0 wheezy using command line options? How do I upgrade my Debian 6.x server to 7.x over the ssh session?

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Howto: Linux Add or Remove a Linux Kernel Modules / Drivers

January 24, 2007, 1:40 pm

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How do I add or remove hardware device driver (module) from running Linux kernel?

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Nginx: SPDY SSL Installation and Configuration On Debian / Ubuntu

May 19, 2013, 8:24 am

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Google Chrome/Chromium, Firefox and Opera browser support SPDY networking protocol. It enables faster browsing on supported sites. SPDY is similar to HTTP, with particular goals to reduce web page load latency and improve web security. SPDY achieves reduced latency through compression, multiplexing, and prioritization. How do I enable nginx SPDY support running on Debian or Ubuntu Linux server?

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Linux Delete / Remove MBR

August 12, 2011, 2:51 pm

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I've installed an usb image on Pen drive along with MBR. Now, I need to use this USB pen for other purpose. Is there a way in Linux to delete the mbr (just like dos fdisk /mbr command)?

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Protected: This is a test tutorial blog post

November 16, 2011, 1:39 am

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There is no excerpt because this is a protected post.

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OS X Mountain Lion 10.8 Set Apache and PHP Web-Server

August 25, 2013, 2:08 am

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I am using Apple OS X Mountain Lion 10.8.4 on my Macbook pro. For my school project I need to write an app in PHP 5 and Apache. However, I am unable to find the Web Sharing option from the Sharing panel in System Preferences. How do I install Apache and PHP5 in OS X version 10.8.4? How do I enable HTTPD and test my web app?

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Debian / Ubuntu: Install Duplicity For Encrypted Backup In Cloud

October 4, 2013, 6:12 am

≫ Next: HowTo: Create a Self-Signed SSL Certificate on Nginx For CentOS / RHEL

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My cloud based backup service provider has ssh access to the backup system. How do I install and configure duplicity software for remote backups in incremental and encrypted format on Debian or Ubuntu Linux based desktop / laptop / server?

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HowTo: Create a Self-Signed SSL Certificate on Nginx For CentOS / RHEL

November 19, 2013, 3:02 am

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I operate a small web site on Cloud server powered by CentOS Linux v6.4. I would like to encrypt my site's information and create a more secure connection. How do I create a self-signed SSL certificate on Nginx for CentOS/Fedora or Red Hat Enterprise Linux based server?

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