Top 5 Cyber Security Threats to Businesses and How to Prevent Them
The risk of cyberattacks against businesses has increased considerably. While the threat is across industries, small companies bear more of the brunt and may go out of business. A report from Cybersecurity Ventures says cybercrimes could cost the world around US$ 10.5 trillion annually by 2025. A sustained campaign has been to increase awareness and ensure businesses have robust IT policies and cybersecurity processes. Several security risks can be identified and prevented. But, it is necessary to know about the cyber security threats to businesses that will help them have preventive measures in place. In addition, companies must be aware of the processes and procedures to prevent data breaches. The article discusses the top business security risks and how to thwart cyberattacks. Malware and Ransomware One of the critical cyber […]
Technology
What is Wireless 802.11 Frame
All Layer 2 frames contain a header, payload, and FCS section. The 802.11 frame format is similar to the Ethernet frame format, with the exception that it contains more fields. The figure below illustrates the wireless 802.11 frame formats and fields. Frame Control – It is 2 bytes long field which determines the type of wireless frames. it is an important field of wireless 802.11 frame containing subfields including control information. The subfields are protocol version, frame type, address type, power management, and security settings, etc. Duration – The 4-byte long field usually used to indicate the remaining duration needed to receive the next frame transmission. Address 1 to 4 – Each address field is 6 bytes long. The fields contain standard IEEE 802 MAC addresses (48 bit each). The meaning of each […]
How to Configure PAgP and LACP
EtherChannel is used to bundle physical links into a single logical link. We can bundle maximum of 8 physical links into one logical link. When physical links bundled into a single logical link, the STP only sees a single logical link and is not able to block anything. There are two types of protocol used for EtherChannel, Port Aggregation Protocol (PAgP) and Link Aggregation Control Protocol (LACP). EtherChannel protocols remove any loops within the physical links. The Etherchannel protocols also maintain a record of each physical link. In case of any physical link failure or restoration, the protocols manage the deletion and addition of the link without informing the STP about the change. Cisco switch uses the IEEE standard Link Aggregation Control Protocol (LACP) and Cisco proprietary Port Aggregation Protocol. […]