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Ellisha Heppner, Grant Management Lead, presented an update on APNIC Foundation to the PNG DNS Forum held from 6 to 10 May, 2024 in Port Moresby, Papua New Guinea.
# Internet Security: Safeguarding Your Digital World
In the contemporary digital age, the internet is a cornerstone of our daily lives. It connects us to vast amounts of information, provides platforms for communication, enables commerce, and offers endless entertainment. However, with these conveniences come significant security challenges. Internet security is essential to protect our digital identities, sensitive data, and overall online experience. This comprehensive guide explores the multifaceted world of internet security, providing insights into its importance, common threats, and effective strategies to safeguard your digital world.
## Understanding Internet Security
Internet security encompasses the measures and protocols used to protect information, devices, and networks from unauthorized access, attacks, and damage. It involves a wide range of practices designed to safeguard data confidentiality, integrity, and availability. Effective internet security is crucial for individuals, businesses, and governments alike, as cyber threats continue to evolve in complexity and scale.
### Key Components of Internet Security
1. **Confidentiality**: Ensuring that information is accessible only to those authorized to access it.
2. **Integrity**: Protecting information from being altered or tampered with by unauthorized parties.
3. **Availability**: Ensuring that authorized users have reliable access to information and resources when needed.
## Common Internet Security Threats
Cyber threats are numerous and constantly evolving. Understanding these threats is the first step in protecting against them. Some of the most common internet security threats include:
### Malware
Malware, or malicious software, is designed to harm, exploit, or otherwise compromise a device, network, or service. Common types of malware include:
- **Viruses**: Programs that attach themselves to legitimate software and replicate, spreading to other programs and files.
- **Worms**: Standalone malware that replicates itself to spread to other computers.
- **Trojan Horses**: Malicious software disguised as legitimate software.
- **Ransomware**: Malware that encrypts a user's files and demands a ransom for the decryption key.
- **Spyware**: Software that secretly monitors and collects user information.
### Phishing
Phishing is a social engineering attack that aims to steal sensitive information such as usernames, passwords, and credit card details. Attackers often masquerade as trusted entities in email or other communication channels, tricking victims into providing their information.
### Man-in-the-Middle (MitM) Attacks
MitM attacks occur when an attacker intercepts and potentially alters communication between two parties without their knowledge. This can lead to the unauthorized acquisition of sensitive information.
### Denial-of-Service (DoS) and Distributed Denial-of-Service (DDoS) Attacks
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1.Wireless Communication System_Wireless communication is a broad term that i...JeyaPerumal1
Wireless communication involves the transmission of information over a distance without the help of wires, cables or any other forms of electrical conductors.
Wireless communication is a broad term that incorporates all procedures and forms of connecting and communicating between two or more devices using a wireless signal through wireless communication technologies and devices.
Features of Wireless Communication
The evolution of wireless technology has brought many advancements with its effective features.
The transmitted distance can be anywhere between a few meters (for example, a television's remote control) and thousands of kilometers (for example, radio communication).
Wireless communication can be used for cellular telephony, wireless access to the internet, wireless home networking, and so on.
1.Wireless Communication System_Wireless communication is a broad term that i...
huawei-s5720-28x-si-dc-brochure-datasheet.pdf
1. S5720-28X-SI-DC (02350DGU)
Datasheet
Buy Huawei, Cisco, Zte, Hpe, Dell, Fortinet Network Equipment
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Overview
Huawei S5720-28X-SI-DC is one of the S5720-SI switches.The S5720-SI series switches (S5720-SI for short) are next-generation standard gigabit Layer 3 Ethernet
switches based on a new generation of high-performance hardware and Huawei Versatile Routing Platform (VRP). They provide large switching capacity and high-density
GE and 10 GE uplink interfaces. With extensive service features and IPv6 forwarding capabilities, the S5720-SI can be used as access or aggregation switches on campus
networks or access switches in data centers. The S5720-SI series integrates many advanced technologies in terms of reliability, security, and energy savings. Simple and
convenient to install and maintain, reducing customers’ O&M costs and helping enterprise customers build next-generation IT networks.
Quick Specification
Model S5720-28X-SI-DC
Part Number 02350DGU
Memory (RAM) 512 MB
Flash 512 MB in total. To view the available flash memory size, run the display version command.
PoE Not supported
Weight with packaging [kg(lb)] 9.1 kg (20.06 lb)
Dimensions (H x W x D)
Basic dimensions (excluding the parts protruding from the body): 44.4 mm x 442.0 mm x 424.7 mm
(1.75 in. x 17.4 in. x 16.72 in.)
Maximum dimensions (the depth is the distance from ports on the front panel to the handle on the
rear panel): 44.4 mm x 442.0 mm x 451.8 mm (1.75 in. x 17.4 in. x 17.79 in.)
Product Details:
Appearance:
2. S5720-28X-SI-DC (02350DGU)
Datasheet
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① Twenty 10/100/1000BASE-T ports
② Four combo ports (10/100/1000BASE-T + 100/1000BASE-X)
③ Four 10GE SFP+ ports
④ One ETH management port
⑤ One console port
⑥ One USB port
⑦ Ground screw
⑧ ESN label
⑨ Power module slot 2
⑩ Power module slot 1
The Accessories for S5270-28X-SI-DC:
Recommended elements:
Model Description
FE-SFP Optical Transceiver
SFP-FE-SX-MM1310 Optical Transceiver, SFP, 100M/155M, Multi-mode Module(1310nm, 2km, LC)
eSFP-FE-LX-SM1310 Optical Transceiver, eSFP, 100M/155M, Single-mode Module(1310nm, 15km, LC)
S-SFP-FE-LH40-SM1310 Optical Transceiver, eSFP, FE, Single-mode Module(1310nm, 40km, LC)
GE-SFP Optical Transceiver
eSFP-GE-SX-MM850 Optical Transceiver, eSFP, GE, Multi-mode Module(850nm, 0.55km, LC)
SFP-GE-LX-SM1310 Optical Transceiver, eSFP, GE, Single-mode Module(1310nm, 10km, LC)
S-SFP-GE-LH40-SM1310 Optical Transceiver, eSFP, GE, Single-mode Module(1310nm, 40km, LC)
S-SFP-GE-LH40-SM1550 Optical Transceiver, eSFP, GE, Single-mode Module(1550nm, 40km, LC)
10G-SFP+ Optical Transceiver
3. S5720-28X-SI-DC (02350DGU)
Datasheet
Buy Huawei, Cisco, Zte, Hpe, Dell, Fortinet Network Equipment
Online In China At Low Price! www.hi-network.com
SFP-10G-USR 10GBase-USR Optical Transceiver, SFP+, 10G, Multi-mode Module(850nm, 0.1km, LC)
OMXD30000 Optical Transceiver, SFP+, 10G, Multi-mode Module(850nm, 0.3km, LC)
OSX010000 Optical Transceiver, SFP+, 10G, Single-mode Module(1310nm, 10km, LC)
GE Copper Transceiver
SFP-1000BaseT Electrical Transceiver,SFP,GE,Electrical Interface Module(100m,RJ45)
Compare to Similar Items:
Product Code S5720-28X-SI-DC S5720-52X-PWR-SI-DC
Switching Capacity 336 Gbit/s 336 Gbit/s
Forwarding Performance 96 Mpps 132 Mpps
Downlink Interfaces
24 Ethernet 10/100/1,000 ports, 4 of which are dual-purpose
10/100/1,000 or SFP
48 Ethernet 10/100/1,000 PoE+ ports
Uplink Interfaces 4 x 10 Gig SFP+ 4 x 10 Gig SFP+
PoE Available No PoE+
Get more information:
Do you have any question about the S5720-28X-SI-DC 02350DGU?
Contact us now via e-mail: info@hi-network.com
Specific Data Sheet:
Part Number 02350DGU
Model S5720-28X-SI-DC
Memory (RAM) 512 MB
Flash 512 MB in total. To view the available flash memory size, run the display version command.
Mean time between failures (MTBF) 82.4 years
Mean time to repair (MTTR) 2
Availability > 0.99999
Service port surge protection Common mode: ±
6 kV
Power supply surge protection
Using AC power modules: ±
6 kV in differential mode, ±
6 kV in common mode
Using DC power modules: ±
1 kV in differential mode, ±
2 kV in common mode
Dimensions (H x W x D)
Basic dimensions (excluding the parts protruding from the body): 44.4 mm x 442.0 mm x 424.7 mm (1.75 in. x
17.4 in. x 16.72 in.)
Maximum dimensions (the depth is the distance from ports on the front panel to the handle on the rear panel):
44.4 mm x 442.0 mm x 451.8 mm (1.75 in. x 17.4 in. x 17.79 in.)
Weight (with packaging) 9.1 kg (20.06 lb)
Stack ports GE electrical ports and 10GE SFP+ optical ports except combo ports on the front panel
RTC Supported
4. S5720-28X-SI-DC (02350DGU)
Datasheet
Buy Huawei, Cisco, Zte, Hpe, Dell, Fortinet Network Equipment
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RPS Not supported
PoE Not supported
Rated voltage range
100 V AC to 240 V AC, 50/60 Hz
-48 V DC to -60 V DC
Maximum voltage range
90 V AC to 264 V AC, 47 Hz to 63 Hz
-36 V DC to -72 V DC
Maximum power consumption (100%
throughput, full speed of fans)
36.9 W
Typical power consumption (30% of traffic load)
Tested according to ATIS standard
EEE enabled
No PoE power consumption
22.5 W
Operating temperature 0°
C to 45°
C (32°
F to 113°
F) at an altitude of 0-1800 m (0-5906 ft.)
Short-term operating temperature -5°
C to +50°
C (23°
F to 122°
F) at an altitude of 0-1800 m (0-5906 ft.)
Storage temperature -40°
C to +70°
C (-40°
F to +158°
F)
Noise under normal temperature (27°
C, sound
power)
< 52 dB(A)
Relative humidity 5% to 95%, noncondensing
Operating altitude
AC power modules configured: 0-5000 m (0-16404 ft.)
DC power modules configured: 0-2000 m (0-6562 ft.)
Certification
EMC certification
Safety certification
Manufacturing certification
Want to Buy
5. S5720-28X-SI-DC (02350DGU)
Datasheet
Buy Huawei, Cisco, Zte, Hpe, Dell, Fortinet Network Equipment
Online In China At Low Price! www.hi-network.com
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