You might noticed this error trying to log into a Linux/Unix system through SSH or SFTP : This account is currently not available. The two main possible causes : – The shell does not exist or have been removed; – Typo error when entering the shell path at the user creation. Have a look at… Read More »
Using the Windows DHCP server, you might noticed this message trying to do an IP reservation with the MAC address on your DHCP scope : The unique Identifier you have entered may not be correct. Do you want to use this Identifier anyway? And then : The DHCP server received a message from a client… Read More »
Here is a quick tutorial regarding how to install a source RPM on RHEL/CentOS Linux. 1. Prepare the build environment and get the dependencies. Do those following command under your root home directory : yum install rpm-build redhat-rpm-config gcc make mkdir -p ~/rpmbuild/{BUILD,RPMS,SOURCES,SPECS,SRPMS} 2. Put the source rpm file at the root of your home directory… Read More »
NTFS filesystem store a lot of information that might not be required all the time and can significantly improve the I/O performance when disabled, especially under a virtualized environment. To disable Last Access Time Stamp on Windows, you need to manually edit the registry. 1. Open the registry editor : Start > Run > regedit.exe 2.… Read More »
Have you notified this error message in the logs since bind-9.8.2 update? named: validating @0x7fc170001550: dlv.isc.org SOA: got insecure response; parent indicates it should be secure named: error (insecurity proof failed) resolving ‘dlv.isc.org/DLV/IN’: 0.0.0.0#53 This is related to the new DNSSEC feature which is now enabled by default. This might indicate the DNS resolvers/forwarders you… Read More »
Juniper ScreenOS for SSG security appliance can be managed either through the Web UI or command line interface (CLI). Upgrade through the Web interface can be endless and painful. The best way to do it is through the CLI. To accomplish this task, you’ll need : – SSH or Telnet client – TFTP server Here… Read More »
Getting this error message trying to start vsFTPd on FreeBSD? 500 OOPS: vsftpd: not configured for standalone, must be started from inetd Then you missed the important part shown at the end of “vsftpd.conf”! # If using vsftpd in standalone mode, uncomment the next two lines: listen=YES background=YES Just uncomment “listen=YES”, “background=YES” and start the… Read More »
If you experience issue with your subnet or receiving the following message when you try to ping an IP address, this mean you have a routing loop on your network. The same subnet might be configured on another router and the network is confused due to the different destination. You need to remove the bad… Read More »
As you might noticed on latest version of Windows, ICMP requests are blocked by default with the built-in firewall. Use this simple command to enable echo request : netsh firewall set icmpsetting 8 enable
You might notice this error trying to add a static route to your Juniper switch stack : root@ir01# set routing-options rib inet.0 static route 0.0.0.0/00 next-hop 0.0.0.0 {master:0}[edit] root@ir01# commit synchronize [edit protocols] ‘bgp’ [edit protocols] ‘ospf3’ [edit routing-options rib inet.0 static] ‘route 0.0.0.0/00’ RT: DEST: 0.0.0.0 MASK: 255.0.0.0 mask too short error: configuration check-out… Read More »