Firewalls And its types in cyber security
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This document discusses firewalls and provides definitions, types, and reasons for using them. Firewalls are used to maintain security of private networks by blocking unauthorized access. There are three main types of firewalls: packet filtering firewalls which allow or block packets based on header information; proxy or application-level firewalls which pass all network traffic through a proxy application to examine data at the application level; and hybrid firewalls which can perform specialized functions of both packet filtering and application-level gateways. Firewalls are important for network security because the internet poses many threats and internal networks are unlikely to be properly secured.
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Background Information for World-Wide Trading Company
World-Wide Trading (WWTC) is a large online broker firm in the Hong Kong. The trading company has a staff of 9,000 who are scattered around the globe. Due to aggressive growth in business, they want to establish a regional office in New York City. They leased the entire floor of a building on Wall Street. You were hired as the director of the IT Department. The President of the company asked you to set up the state of the art network by December 15, 2013. He shared with you the organizational structure and a list of the staff. You hired a consultant to test the network infrastructure and power requirement at WWTC office space. The consultant reported that the network infrastructure is solid and gigabit network can be set up on existing network wiring. Also, the existing power supply will meet their current and future demand. The President has reiterated these business goals.
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The purpose of this Request for Proposal is to solicit from qualified vendors proposals for a
secure and fast network to ensure proper operation of the network.
To prepare a design for a state of the art network at the Wall Street location of World-Wide Trading.
Propose a Network design that solves the current security audit problems (see security sections), to meet business and technical goals.
Provide a modular, scalable and network.
Provide redundancy at building core layer and building distribution layer and access layer and at workstation level to avoid failure at one point. For Building Access layer provide redundant uplinks connection to Building Distribution layer.
Select appropriate Cisco switch model for each part of your enterprise campus model design from the Cisco Products Link, listed below and use the following assumptions in your selection process.
Selecting the Access layers switches:
0. Provide one port to each device
0. Make provision for 100% growth
Server farm switches
· Assume 6 NIC cards in each server and one NIC card uses one port of switch
· Dual processors and dual power supply
Propose an IP addressing redesign that optimizes IP addressing and IP routing (including the use of route summarization). Provide migration provision to IPv6 protocol in future.
Propose a High Level securi ...
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Calculate the number of moles of Mg(NO3)2 in 44.4 g of this compoundWrite the result of the following operation with the correct number of significant figure of 0.248?
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14 th Edition of International conference on computer vision
About the event
14th Edition of International conference on computer vision
Computer conferences organized by ScienceFather group. ScienceFather takes the privilege to invite speakers participants students delegates and exhibitors from across the globe to its International Conference on computer conferences to be held in the Various Beautiful cites of the world. computer conferences are a discussion of common Inventions-related issues and additionally trade information share proof thoughts and insight into advanced developments in the science inventions service system. New technology may create many materials and devices with a vast range of applications such as in Science medicine electronics biomaterials energy production and consumer products.
Nomination are Open!! Don't Miss it
Visit: computer.scifat.com
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For Enquiry: Computer@scifat.com
WWDC 2024 Keynote Review: For CocoaCoders Austin
Overview of WWDC 2024 Keynote Address.
Covers: Apple Intelligence, iOS18, macOS Sequoia, iPadOS, watchOS, visionOS, and Apple TV+.
Understandable dialogue on Apple TV+
On-device app controlling AI.
Access to ChatGPT with a guest appearance by Chief Data Thief Sam Altman!
App Locking! iPhone Mirroring! And a Calculator!!
一比一原版(USF毕业证)旧金山大学毕业证如何办理
USF硕士毕业证成绩单【微信95270640】一比一伪造旧金山大学文凭@假冒USF毕业证成绩单+Q微信95270640办理USF学位证书@仿造USF毕业文凭证书@购买旧金山大学毕业证成绩单USF真实使馆认证/真实留信认证回国人员证明
#一整套旧金山大学文凭证件办理#—包含旧金山大学旧金山大学本科毕业证成绩单学历认证|使馆认证|归国人员证明|教育部认证|留信网认证永远存档教育部学历学位认证查询办理国外文凭国外学历学位认证#我们提供全套办理服务。
一整套留学文凭证件服务：
一：旧金山大学旧金山大学本科毕业证成绩单毕业证 #成绩单等全套材料从防伪到印刷水印底纹到钢印烫金
二：真实使馆认证（留学人员回国证明）使馆存档
三：真实教育部认证教育部存档教育部留服网站永久可查
四：留信认证留学生信息网站永久可查
国外毕业证学位证成绩单办理方法：
1客户提供办理旧金山大学旧金山大学本科毕业证成绩单信息：姓名生日专业学位毕业时间等（如信息不确定可以咨询顾问：我们有专业老师帮你查询）；
2开始安排制作毕业证成绩单电子图；
3毕业证成绩单电子版做好以后发送给您确认；
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5成品做好拍照或者视频给您确认；
6快递给客户（国内顺丰国外DHLUPS等快读邮寄）。
教育部文凭学历认证认证的用途：
如果您计划在国内发展那么办理国内教育部认证是必不可少的。事业性用人单位如银行国企公务员在您应聘时都会需要您提供这个认证。其他私营 #外企企业无需提供！办理教育部认证所需资料众多且烦琐所有材料您都必须提供原件我们凭借丰富的经验帮您快速整合材料让您少走弯路。
实体公司专业为您服务如有需要请联系我: 微信95270640奈一次次令他失望山娃今年岁上五年级识得很多字从走出小屋开始山娃就知道父亲的家和工地共有一个很动听的名字——天河工地的底层空空荡荡很宽阔很凉爽在地上铺上报纸和水泥袋父亲和工人们中午全睡在地上地面坑坑洼洼山娃曾多次绊倒过也曾有长铁钉穿透凉鞋刺在脚板上但山娃不怕工地上也常有五六个从乡下来的小学生他们的父母亲也是高楼上的建筑工人小伙伴来自不同省份都操着带有浓重口音的普通话可不知为啥山娃不仅很快与他们熟识了
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SQL has attained widespread adoption, but Business Intelligence tools still use their own higher level languages based upon a multidimensional paradigm. Composable calculations are what is missing from SQL, and we propose a new kind of column, called a measure, that attaches a calculation to a table. Like regular tables, tables with measures are composable and closed when used in queries.
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To define the evaluation semantics for measures, we introduce context-sensitive expressions (a way to evaluate multidimensional expressions that is consistent with existing SQL semantics), a concept called evaluation context, and several operations for setting and modifying the evaluation context.
A talk at SIGMOD, June 9–15, 2024, Santiago, Chile
Authors: Julian Hyde (Google) and John Fremlin (Google)
https://doi.org/10.1145/3626246.3653374
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Recording:
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Visit Us For Information: https://www.linkedin.com/pulse/what-makes-reactjs-stand-out-mobile-app-development-rajesh-rai-pihvf/
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Firewalls And its types in cyber security
- 1. Firewalls: Presented by: Nikhil E R USN:1DA17MCA79
- 2. Definition - What does Firewall mean? • A firewall is software used to maintain the security of a private network. • Firewalls block unauthorized access to or from private networks and are often employed to prevent unauthorized Web users or illicit software from gaining access to private networks connected to the Internet. • A firewall may be implemented using hardware, software, or a combination of both. • A firewall is recognized as the first line of defense in securing sensitive information. For better safety, the data can be encrypted.
- 3. Contoso Ltd. Lorem ipsum dolor sit amet, consectetur adipiscing elit. Etiam aliquet eu mi quis lacinia. Ut fermentum a magna ut. 3 WHY TO USE FIREWALLS? Firewall is considered as an essential element to achieve network security for the following reasons: •Internal network and hosts are unlikely to be properly secured. •Internet is a dangerous place with criminals, users from competing companies, disgruntled ex-employees, spies from unfriendly countries, vandals, etc. •To prevent an attacker from launching denial of service attacks on network resource. •To prevent illegal modification/access to internal data by an outsider attacker.
- 4. Contoso Ltd. Types of Firewalls: Firewall is categorized into three basic types − 4 Milestone •Packet filter •Application-level gateway •Circuit-level gateway
- 5. Contoso Ltd. PacketFilteringFirewall ○ Allow or block the packets mostly based on criteria such as source and/or destination IP addresses, protocol, source and/or destination port numbers, and various other parameters within the IP header. ○ The decision can be based on factors other than IP header fields such as ICMP message type, TCP SYN and ACK bits, etc. ○ Packet filter rule has two parts − ○ Selection criteria − It is a used as a condition and pattern matching for decision making. ○ Action field − This part specifies action to be taken if an IP packet meets the selection criteria. The action could be either block (deny) or permit (allow) the packet across the firewall. Add a footer 5
- 6. Contoso Ltd. ○ Cost ○ Low resource usage ○ Best suited for small network Disadvantges: • Can work only on the network layer • Do not support complex rule based support • Vulnerable to spoofing 6 Add a footer Advantges:
- 7. Contoso Ltd. Proxy Firewalls(Applicationlevel Firewalls) ○ The more sophisticated proxy or application layer firewalls deal with network traffic by passing all packets through a separate “proxy” application that examines data at an application level. ○ A proxy firewall doesn’t allow a direct connection between your network and the Internet. Instead it accepts requests and executes them on behalf of the user. ○ This proxy system enables you to set a firewall to accept or reject packets based on addresses, port information and application information. For instance, you can set the firewall to filter out all incoming packets belonging to EXE files, which are often infected with viruses and worms. Proxy firewalls generally keep very detailed logs, including information on the data portions of packets. Add a footer 7
- 8. Contoso Ltd. • More secure than packet filter firewalls • Easy to log and audit incoming traffic Disadvantages: • Additional processing overhead on each connection 8 Add a footer Advantages:
- 9. Contoso Ltd. HybridFirewall(circuit-levelgateway): ○ This can be a stand – alone system or it can be a specialized functions performed by an application – level gateway for certain applications. ○ It does not permit an end – to – end TCP connection; rather, the gateway sets two TCP connections. ○ A typical use of the circuit – level gateway is a situation in which the system administrator trusts the internal users. ○ The gateway can be configured to support application – level or proxy service on inbound connections and circuit – level functions for outbound connections. Add a footer 9
- 10. Contoso Ltd. ○ Comparatively inexpensive and provide Anonymity to the private network. Disadvantage : • Do not filter Individual Packets 10 Add a footer Advantages: