Cyber Crime on a Roll, CyberSecurity still catching up..!!

2 min readJun 7, 2020

Not a week ago that we don’t hear about a breach or identify theft, there are security devices such as Firewalls, Switches, Routers, NIDS/NIPS, VPN concentrator, SIEM, DLP, NAC, SSL/TLS accelerator, Proxy, Load Balancers, Wireless Access points, bridges , Mail/Media Gateway , Hardware Security Modules which are used to either block the threats or delay it.

Router

Routers are used to connect the networks and operate at Layer 3 of the OSI model. A router stores information about network destinations. A border router is an outside connection of a LAN to an external WAN.

Router Security

Access Control Lists (ACL): It is used to filter packets by source address, a destination address, protocol, or port.

Zones: Segmenting networks based on functionality or security.

Antispoofing: By creating access lists which can block access to private IP addresses and localhost ranges from the internet.

Switches

It connects devices with a computer network, by using packet switching to receive, process and forward data to the destination. It works on Layer 2/Layer 3 of the OSI model.

Packet-forwarding decisions are based on MAC (Media Access Control)

Switch Security

VLANs: Segment networks and limit broadcast traffic.

Port Security — Enable/Disable, individual switches ports based on MAC address.

It Provides Loop prevention
It ProvidesFlood Guard

Proxy

It is a boundary device between internal and external networks

It’s a device that acts on behalf of others and provides security, logging, and caching

Proxy Server — Blocks known malicious websites
Forward Proxy — Retrieves data on behalf of a client
Reverse Proxy — Protects access to a server on the internal network
Transparent Proxy/inline/forged proxy/aka intercepting — A caching server that redirects client’s requests without modifying them to reduce bandwidth usage.