Vyacheslav

How to upgrade the router firmware

To upgrade the firmware of the router, you need to disconnect all unnecessary cables, leaving only the power and patchcad connected to one of the LAN ports and computer. In most cases, updating via Wi-Fi is not recommended! Then type in the browser address http://192.168.1.1 or http://192.168.0.1, thereby opening its web-interface. The address may be different, you can find it by looking at the IP address of the gateway in the network settings.

Firmware Update and Recovery of Asus RT-N10 Router

The official page for downloading firmware and utilities for recovery – https://www.asus.com/support

Huawei Quidway S2300 firmware upgrade via BOOTROM MENU

I will give an example of updating the firmware of the Huawei Quidway S2326TP-EI switch via BOOTROM MENU.

Huawei Quidway S2326TP-EI firmware upgrade

I will give an example of updating the firmware of the Huawei Quidway S2326TP-EI switch.
First, let’s look at the current firmware version:

Backup MBR in Linux

Master boot record (MBR) — code and data located in the first 512 bytes of the hard disk needed to boot the operating system.

From 512 bytes of MBR code contains:
446 bytes — Bootstrap
64 bytes — Partition table
2 bytes — Signature

Configuring DHCP snooping on BDCOM P3310

For example, I will configure DHCP snooping on the BDCOM P3310C EPON OLT.

First, let’s connect to the device and go to the configuration mode:
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Difference between MASQUERADE and SNAT

In this article I will briefly describe the difference between MASQUERADE and SNAT.

MASQUERADE. Less fast routing than SNAT with mass requests, since for each new connection an IP address on the external network interface (WAN) is determined. Great for home use routers and when changing the IP address on the WAN interface.
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PPS Viewer Script (Packets Per Second)

The script every second displays the number of incoming and outgoing packets per second on the specified network interface.
Place the contents of the script into a file, for example, pps.sh and execute by specifying the name of the network interface (you can stop the execution of the script with CTRL+C):

Installing and using ipset

ipset – a tool consisting of a kernel module, libraries and utility, allowing you to organize a list of networks, IP or MAC addresses, etc., which is very convenient to use for example with IPTables.

Installation command in Ubuntu:

What to do if “Network Discovery” does not turn on in Windows

Once I noticed on one of the computers that nothing was displayed in the network environment, and after selecting “Enable network discovery” in “Control Panel \ Network and Internet \ Network and Sharing Center \ Advanced Sharing Options”, the choice was still on “Disable network discovery”.
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