Having such issue starting/stopping CSF on RHEL/CentOS 7? # csf -x *WARNING* URLGET set to use LWP but perl module is not installed, reverting to HTTP::Tiny You have an unresolved error when starting csf: Error: /sbin/ifconfig (ifconfig binary location) -v does not exist!, at line 2510 in /usr/sbin/csf You need to restart csf successfully to… Read More »
In some rare occasion, you may be unable to access the OpenVPN WebUI through the standard port tcp-943 after a brand new installation. In my particular case, it happened once with CentOS 7. This is caused by the init script that does not ran properly. To resolve this matter, just invoke the init script manually… Read More »
Here is how to remotely copy your Brocade device running FabricOS to a remote TFTP server. To copy the currently running configuration : copy startup-config tftp <TFTP_Server_IP> startup-config.cfg To copy the configuration saved to the flash memory : copy run tftp <TFTP_Server_IP> switch-name.cfg To restore the remote config to your device : copy tftp start <TFTP_Server_IP>… Read More »
RedHat can be used upon a paid subscription. You have to register your system using the following command in order to use the Yum repositories : subscription-manager register –username <username> –password <password> –auto-attach If by any chance you ran that command in the first place but you had no subscription available in your account, your… Read More »
Here is a quick reference chart on subnet size for IPv6 prefixes : CIDR Number of IPs /128 1 /127 2 /126 4 /125 8 /124 16 /123 32 /122 64 /121 128 /120 256 /119 512 /118 1,024 /117 2,048 /116 4,096 /115 8,192 /114 16,384 /113 32,768 /112 65,536 /111 131,072 /110 262,144… Read More »
Enabling automatic updates installation as they come available is quite easy. First, install the yum-cron utility as followed : yum install yum-cron Make sure the service is running : service yum-cron start Then enable the service on boot : chkconfig yum-cron on Optionnaly, you may want to exclude some packages from being updated, just edit… Read More »
If you have recently updated to WordPress version 4.2.0 and try to update to version 4.2.1+ or try to updates your plugins through the CMS, the “update” status and the is spinning forever and do not complete/stuck. I have noticed the following in the Web server error logs : PHP Fatal error: Allowed memory size… Read More »
As you probably noticed, the fan on the wireless model of Juniper SSG5 is known to be noisy over time and does not last very long (maybe a year or two if not in a dusty environment). Even though the device seem to be running fine fan less, I would not risk it on a… Read More »
Having this error trying to install Nginx on Debian Linux 8? dpkg: error processing package nginx (–configure): dependency problems – leaving unconfigured Errors were encountered while processing: nginx-full nginx E: Sub-process /usr/bin/dpkg returned an error code (1) This is a known behaviour if you have Apache or another Web server installed and running. The problem… Read More »
Modern and performance/server grade network interface have the capability of using transmit and receive buffer description ring into the main memory. They use direct memory access (DMA) to transfer packets from the main memory to carry packets independently from the CPU. The usual default buffering values for regular desktop NICs are 256 or 512 bytes. High… Read More »