In the test I will update the firmware of the D-Link DIR-300 B5 v.1.2.94 router to 2.15.12.
In my case, after updating the firmware, the settings were reset to the factory settings and new functions were added, for example, when you select a Wi-Fi channel, you can see the noise levels of channels by other devices.
Author Archives: Vyacheslav
ACL Examples for D-Link Switches
In this article I will give some examples of blocking IP addresses, MAC addresses, DHCP packets from DHCP servers, etc.
Continue reading “ACL Examples for D-Link Switches”Configuring Zabbix SNMP Traps
Suppose we configured snmp according to my instructions:
Configuring SNMP Traps on Linux
Now change the configuration file /etc/snmp/snmptt.conf.
IPTables rules for SNMP
In this article, I will give an example of IPTables rules for SNMP.
Let’s say “iptables -P INPUT DROP” is the default, which is very desirable.
Configuring SNMP Traps on Linux
Here is an example of installing SNMP and catching SNMP traps in Ubuntu Server.
Continue reading “Configuring SNMP Traps on Linux”How to install applications from the App Store on older versions of iOS
They asked to somehow install Viber on iPhone 4 with the old iOS 7, which did not want to be installed through the App Store saying that iOS 8 and above was needed.
Continue reading “How to install applications from the App Store on older versions of iOS”Solving the “router was rebooted without proper shutdown” error in MikroTik
They asked to find out somehow the reason for the frequent reboot of the MikroTik router.
When logging in the device, an error was constantly displayed in the logs:
How to catch broadcast flood on D-Link switches
I noticed once in one common network jumps in broadcast traffic, I was able to detect naturally quickly, since I had previously set up monitoring via graphs and triggers using Zabbix. I looked at the graphs of broadcast traffic from the ports of the main switch, from here it was clear where he started to go, and so we determined the chain to the client switch and port. In the Zabbix monitoring system, it is convenient to configure triggers that trigger when the limit of broadcast traffic is exceeded and report this on the screen, email to the administrator, etc.
Continue reading “How to catch broadcast flood on D-Link switches”Triggers in MySQL
MySQL triggers are procedures that fire when certain events occur, such as inserting, deleting, changing a string.
Continue reading “Triggers in MySQL”Configuring Foxgate S6208
On the test I will configure the Foxgate S6208-S1 (R2.0) switch.
Continue reading “Configuring Foxgate S6208”