Networking

Shodan.io tips and tricks

Shodan.io tips and tricks

Bogdan Ungureanu

Shodan is a search engine for the internet of things (IoT). It allows users to search for specific types of internet-connected devices, such as security cameras or industrial control systems, and view information about them, such as their location, their internet protocol (IP) address, and their manufacturer.

DHCP explained

Bogdan Ungureanu

DHCP stands for dynamic host configuration protocol and is a network protocol used on IP networks where a DHCP server automatically assigns an IP address and other information to each host on the network so they can communicate efficiently with other endpoints.

Enable DHCP snooping on SG3XX layer 3 switches

Bogdan Ungureanu

DHCP snooping is a security feature that acts as a firewall between untrusted hosts and trusted DHCP servers.

To protect your network against rogue DHCP servers and remove malicious or malformed DHCP traffic, the DHCP snooping needs to be configured on LAN switches to block the unwanted traffic.

Identify and remove rogue dhcp server

Bogdan Ungureanu

A DHCP (Dynamic Host Configuration Protocol) server is a networking service that automatically assigns IP addresses to devices on a network.

A “rogue” DHCP server is one that has been set up without the network administrator’s knowledge or permission, and can cause conflicts and connectivity problems on the network.