firewallpresentation-100826052003-phpapp02.pptx
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This document discusses firewalls, including how they work, types of firewalls, and testing firewall configurations. It describes how firewalls inspect network traffic and determine whether to allow or block it based on rules. There are hardware and software firewalls that can protect entire networks or single computers. Firewalls focus security decisions, enforce security policies, limit exposure to threats, and log Internet activity. The document also covers packet filtering, application-level gateways, circuit-level gateways, single-box and screened host architectures, and strategies like default deny, default permit, least privilege, and defense in depth. It provides an example of manually testing a firewall configuration to check allowed and denied traffic.
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Firewallpresentation 100826052003-phpapp02
This presentation discusses firewalls and how they work. It begins by defining a firewall as hardware, software, or a combination of both that prevents unauthorized access to private networks and computers from the internet. It then explains the differences between hardware and software firewalls and how software firewalls inspect packets of data. The presentation covers firewall rules, types of firewalls including packet filtering and application level gateways, and architectures like single-box and screened host. It concludes with testing a firewall configuration using examples of manual tests of traffic allowed or denied based on source and destination.
Firewallpresentation 100826052003-phpapp02
This presentation discusses firewalls and how they work. It begins by defining a firewall as hardware, software, or a combination of both that prevents unauthorized access to private networks and computers from the internet. It then explains the differences between hardware and software firewalls and how software firewalls inspect packets of data. The presentation covers firewall rules, types of firewalls including packet filtering and application level gateways, and architectures like single-box and screened host. It concludes with testing a firewall configuration using examples of manual tests of traffic allowed or denied based on source and destination.
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This presentation summarizes information about firewalls, including:
- Firewalls can be hardware, software, or a combination and are used to prevent unauthorized access to private networks and computers.
- Hardware firewalls protect entire networks while software firewalls protect individual computers. Software firewalls inspect each packet of data to determine whether it should be allowed through or blocked.
- When configuring a firewall, rules must be set to allow, block, or ask about certain traffic based on IP addresses, domains, protocols, and ports. Firewalls can then be tested to ensure the configuration is working properly.
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This presentation summarizes information about firewalls, including:
- Firewalls can be hardware, software, or a combination and are used to prevent unauthorized access to private networks and computers.
- Hardware firewalls protect entire networks while software firewalls protect individual computers.
- Firewalls inspect packets of data to determine whether to allow or block them based on configured rules.
- Different types of firewalls include packet filtering, application-level gateways, and circuit-level gateways.
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A firewall is hardware or software that protects private networks and computers from unauthorized access. There are different types of firewalls including packet filtering, application-level gateways, and circuit-level gateways. Firewalls work by inspecting packets and determining whether to allow or block them based on rules. They can protect networks and devices from hackers, enforce security policies, and log internet activity while limiting exposure to threats. However, firewalls cannot protect against insider threats, new types of threats, or viruses. Firewall configurations should be tested to ensure they are properly blocking unauthorized traffic as intended.
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A firewall is a device or software that protects private networks from unauthorized access. Hardware firewalls protect entire networks at the router level while software firewalls protect individual computers. There are three main types of firewalls: packet filtering routers inspect packets and allow or block them, application-level gateways act as proxies for applications, and circuit-level gateways set up two TCP connections to determine which connections are allowed. A firewall establishes rules to allow trusted traffic to flow automatically while blocking dangerous traffic to protect computers and networks.
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Firewallpresentation 100826052003-phpapp02
This presentation discusses firewalls and how they work. It begins by defining a firewall as hardware, software, or a combination of both that prevents unauthorized access to private networks and computers from the internet. It then explains the differences between hardware and software firewalls and how software firewalls inspect packets of data. The presentation covers firewall rules, types of firewalls including packet filtering and application level gateways, and architectures like single-box and screened host. It concludes with testing a firewall configuration using examples of manual tests of traffic allowed or denied based on source and destination.
Firewallpresentation 100826052003-phpapp02
This presentation discusses firewalls and how they work. It begins by defining a firewall as hardware, software, or a combination of both that prevents unauthorized access to private networks and computers from the internet. It then explains the differences between hardware and software firewalls and how software firewalls inspect packets of data. The presentation covers firewall rules, types of firewalls including packet filtering and application level gateways, and architectures like single-box and screened host. It concludes with testing a firewall configuration using examples of manual tests of traffic allowed or denied based on source and destination.
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This presentation summarizes information about firewalls, including:
- Firewalls can be hardware, software, or a combination and are used to prevent unauthorized access to private networks and computers.
- Hardware firewalls protect entire networks while software firewalls protect individual computers. Software firewalls inspect each packet of data to determine whether it should be allowed through or blocked.
- When configuring a firewall, rules must be set to allow, block, or ask about certain traffic based on IP addresses, domains, protocols, and ports. Firewalls can then be tested to ensure the configuration is working properly.
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This presentation summarizes information about firewalls, including:
- Firewalls can be hardware, software, or a combination and are used to prevent unauthorized access to private networks and computers.
- Hardware firewalls protect entire networks while software firewalls protect individual computers.
- Firewalls inspect packets of data to determine whether to allow or block them based on configured rules.
- Different types of firewalls include packet filtering, application-level gateways, and circuit-level gateways.
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A firewall is hardware or software that protects private networks and computers from unauthorized access. There are different types of firewalls including packet filtering, application-level gateways, and circuit-level gateways. Firewalls work by inspecting packets and determining whether to allow or block them based on rules. They can protect networks and devices from hackers, enforce security policies, and log internet activity while limiting exposure to threats. However, firewalls cannot protect against insider threats, new types of threats, or viruses. Firewall configurations should be tested to ensure they are properly blocking unauthorized traffic as intended.
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A firewall is a device or software that protects private networks from unauthorized access. Hardware firewalls protect entire networks at the router level while software firewalls protect individual computers. There are three main types of firewalls: packet filtering routers inspect packets and allow or block them, application-level gateways act as proxies for applications, and circuit-level gateways set up two TCP connections to determine which connections are allowed. A firewall establishes rules to allow trusted traffic to flow automatically while blocking dangerous traffic to protect computers and networks.
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2) There are different types of firewalls including software-based, hardware-based, network layer, and application layer. Network layer firewalls include packet filters and circuit level filters. Application layer firewalls can understand applications and protocols.
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Presentation looks at the role , relevance and importance of built and natural heritage, issues faced by heritage in the Indian context and options which can be leveraged to preserve and conserve the heritage.It also lists the challenges faced by the heritage due to rapid urbanisation, land speculation and commercialisation in the urban areas. In addition, ppt lays down the roadmap for the preservation, conservation and making value addition to the available heritage by making it integral part of the planning , designing and management of the human settlements.
在线办理(UCM毕业证书)加州大学美熹德分校毕业证文凭证书一模一样
学校原件一模一样【微信：741003700 】《(UCM毕业证书)加州大学美熹德分校毕业证文凭证书》【微信：741003700 】学位证，留信认证（真实可查，永久存档）原件一模一样纸张工艺/offer、雅思、外壳等材料/诚信可靠,可直接看成品样本，帮您解决无法毕业带来的各种难题！外壳，原版制作，诚信可靠，可直接看成品样本。行业标杆！精益求精，诚心合作，真诚制作！多年品质 ,按需精细制作，24小时接单,全套进口原装设备。十五年致力于帮助留学生解决难题，包您满意。
本公司拥有海外各大学样板无数，能完美还原。
1:1完美还原海外各大学毕业材料上的工艺：水印，阴影底纹，钢印LOGO烫金烫银，LOGO烫金烫银复合重叠。文字图案浮雕、激光镭射、紫外荧光、温感、复印防伪等防伪工艺。材料咨询办理、认证咨询办理请加学历顾问Q/微741003700
【主营项目】
一.毕业证【q微741003700】成绩单、使馆认证、教育部认证、雅思托福成绩单、学生卡等！
二.真实使馆公证(即留学回国人员证明,不成功不收费)
三.真实教育部学历学位认证（教育部存档！教育部留服网站永久可查）
四.办理各国各大学文凭(一对一专业服务,可全程监控跟踪进度)
如果您处于以下几种情况：
◇在校期间，因各种原因未能顺利毕业……拿不到官方毕业证【q/微741003700】
◇面对父母的压力，希望尽快拿到；
◇不清楚认证流程以及材料该如何准备；
◇回国时间很长，忘记办理；
◇回国马上就要找工作，办给用人单位看；
◇企事业单位必须要求办理的
◇需要报考公务员、购买免税车、落转户口
◇申请留学生创业基金
留信网认证的作用:
1:该专业认证可证明留学生真实身份
2:同时对留学生所学专业登记给予评定
3:国家专业人才认证中心颁发入库证书
4:这个认证书并且可以归档倒地方
5:凡事获得留信网入网的信息将会逐步更新到个人身份内，将在公安局网内查询个人身份证信息后，同步读取人才网入库信息
6:个人职称评审加20分
7:个人信誉贷款加10分
8:在国家人才网主办的国家网络招聘大会中纳入资料，供国家高端企业选择人才
一比一原版(Sheffield毕业证书)谢菲尔德大学毕业证如何办理
学校原件一模一样【微信：6496090 】【(Sheffield毕业证书)谢菲尔德大学毕业证成绩单】【微信：6496090 】学位证，留信认证（真实可查，永久存档）原件一模一样纸张工艺/offer、雅思、外壳等材料/诚信可靠,可直接看成品样本，帮您解决无法毕业带来的各种难题！外壳，原版制作，诚信可靠，可直接看成品样本。行业标杆！精益求精，诚心合作，真诚制作！多年品质 ,按需精细制作，24小时接单,全套进口原装设备。十五年致力于帮助留学生解决难题，包您满意。
本公司拥有海外各大学样板无数，能完美还原。
1:1完美还原海外各大学毕业材料上的工艺：水印，阴影底纹，钢印LOGO烫金烫银，LOGO烫金烫银复合重叠。文字图案浮雕、激光镭射、紫外荧光、温感、复印防伪等防伪工艺。材料咨询办理、认证咨询办理请加学历顾问Q/微6496090
【主营项目】
一.毕业证【q微6496090】成绩单、使馆认证、教育部认证、雅思托福成绩单、学生卡等！
二.真实使馆公证(即留学回国人员证明,不成功不收费)
三.真实教育部学历学位认证（教育部存档！教育部留服网站永久可查）
四.办理各国各大学文凭(一对一专业服务,可全程监控跟踪进度)
如果您处于以下几种情况：
◇在校期间，因各种原因未能顺利毕业……拿不到官方毕业证【q/微6496090】
◇面对父母的压力，希望尽快拿到；
◇不清楚认证流程以及材料该如何准备；
◇回国时间很长，忘记办理；
◇回国马上就要找工作，办给用人单位看；
◇企事业单位必须要求办理的
◇需要报考公务员、购买免税车、落转户口
◇申请留学生创业基金
留信网认证的作用:
1:该专业认证可证明留学生真实身份
2:同时对留学生所学专业登记给予评定
3:国家专业人才认证中心颁发入库证书
4:这个认证书并且可以归档倒地方
5:凡事获得留信网入网的信息将会逐步更新到个人身份内，将在公安局网内查询个人身份证信息后，同步读取人才网入库信息
6:个人职称评审加20分
7:个人信誉贷款加10分
8:在国家人才网主办的国家网络招聘大会中纳入资料，供国家高端企业选择人才
办理(Sheffield毕业证书)谢菲尔德大学毕业证【微信：6496090 】外观非常简单，由纸质材料制成，上面印有校徽、校名、毕业生姓名、专业等信息。
办理(Sheffield毕业证书)谢菲尔德大学毕业证【微信：6496090 】格式相对统一，各专业都有相应的模板。通常包括以下部分：
校徽：象征着学校的荣誉和传承。
校名:学校英文全称
授予学位：本部分将注明获得的具体学位名称。
毕业生姓名：这是最重要的信息之一，标志着该证书是由特定人员获得的。
颁发日期：这是毕业正式生效的时间，也代表着毕业生学业的结束。
其他信息：根据不同的专业和学位，可能会有一些特定的信息或章节。
办理(Sheffield毕业证书)谢菲尔德大学毕业证【微信：6496090 】价值很高，需要妥善保管。一般来说，应放置在安全、干燥、防潮的地方，避免长时间暴露在阳光下。如需使用，最好使用复印件而不是原件，以免丢失。
综上所述，办理(Sheffield毕业证书)谢菲尔德大学毕业证【微信：6496090 】是证明身份和学历的高价值文件。外观简单庄重，格式统一，包括重要的个人信息和发布日期。对持有人来说，妥善保管是非常重要的。
快速办理(Adelaide毕业证书)阿德莱德大学毕业证文凭证书一模一样
学校原件一模一样【微信：741003700 】《(Adelaide毕业证书)阿德莱德大学毕业证文凭证书》【微信：741003700 】学位证，留信认证（真实可查，永久存档）原件一模一样纸张工艺/offer、雅思、外壳等材料/诚信可靠,可直接看成品样本，帮您解决无法毕业带来的各种难题！外壳，原版制作，诚信可靠，可直接看成品样本。行业标杆！精益求精，诚心合作，真诚制作！多年品质 ,按需精细制作，24小时接单,全套进口原装设备。十五年致力于帮助留学生解决难题，包您满意。
本公司拥有海外各大学样板无数，能完美还原。
1:1完美还原海外各大学毕业材料上的工艺：水印，阴影底纹，钢印LOGO烫金烫银，LOGO烫金烫银复合重叠。文字图案浮雕、激光镭射、紫外荧光、温感、复印防伪等防伪工艺。材料咨询办理、认证咨询办理请加学历顾问Q/微741003700
【主营项目】
一.毕业证【q微741003700】成绩单、使馆认证、教育部认证、雅思托福成绩单、学生卡等！
二.真实使馆公证(即留学回国人员证明,不成功不收费)
三.真实教育部学历学位认证（教育部存档！教育部留服网站永久可查）
四.办理各国各大学文凭(一对一专业服务,可全程监控跟踪进度)
如果您处于以下几种情况：
◇在校期间，因各种原因未能顺利毕业……拿不到官方毕业证【q/微741003700】
◇面对父母的压力，希望尽快拿到；
◇不清楚认证流程以及材料该如何准备；
◇回国时间很长，忘记办理；
◇回国马上就要找工作，办给用人单位看；
◇企事业单位必须要求办理的
◇需要报考公务员、购买免税车、落转户口
◇申请留学生创业基金
留信网认证的作用:
1:该专业认证可证明留学生真实身份
2:同时对留学生所学专业登记给予评定
3:国家专业人才认证中心颁发入库证书
4:这个认证书并且可以归档倒地方
5:凡事获得留信网入网的信息将会逐步更新到个人身份内，将在公安局网内查询个人身份证信息后，同步读取人才网入库信息
6:个人职称评审加20分
7:个人信誉贷款加10分
8:在国家人才网主办的国家网络招聘大会中纳入资料，供国家高端企业选择人才
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Heritage Conservation.Strategies and Options for Preserving India Heritage
Heritage Conservation.Strategies and Options for Preserving India Heritage
firewallpresentation-100826052003-phpapp02.pptx
- 1. PRESENTERS :- Mohamed Sh Ahmed Mohamed Presentation :’Firewalls’ 1
- 2. Table of Contents 2 INTRODUCTION HOW FIREWALLWORKS TYPES OF FIREWALLS MAKING THE FIREWALL FIT TESTING A FIREWALLCONFIGURATION CONCLUSION REFERENCES
- 3. Introduction Is hardware, software, or a combination of both used to prevent unauthorized programs or Internet users from accessing a private network and/or a single computer. 3
- 4. Hardware vs. Software Firewalls 4 Hardware Firewalls Protect an entire network Implemented on the router level Usually more expensive, harder to configure Software Firewalls Protect a single computer Usually less expensive, easier to configure
- 5. How does a software firewall work? 5 Inspects each individual “packet” of data as it arrives at either side of the firewall Determines whether it should be allowed to pass through or if it should be blocked
- 6. Firewall Rules 6 Allow – traffic that flows automatically because it has been deemed Block – traffic that is blocked because it has been deemed dangerous to your computer Ask – asks the user whether or not the traffic is allowed to pass through
- 7. What Can a Firewall Do? Focus for security decisions Stop hackers from accessing your computer Can enforce security policy Protects your personal information Limits your exposure Blocks “pop up” ads and certain cookies Can log Internet activity efficiently Determines which programs can access the Internet 7
- 8. What Can't a Firewall Do? Can't protect you against malicious insiders Can't protect you against connections that don't go through it Can't protect against completely new threats Can't protect against viruses 8
- 9. Types of Firewalls Packet Filtering Firewall Application level Gateway Circuit level gateway 9
- 12. Making The Firewall Fit IP address Domain names Protocols Ports 12
- 13. What It Protects You From Remote login SMTP session hijacking Operating system bugs Spam E-mail bombs Source routing 13
- 14. Security Strategies implemented 14 Default Deny Prohibit all communication that is not expressly permitted Default Permit Permit all communication that is not explicitly prohibited Least Privilege reduces the authorization level at which various actions are performed Defense in Depth security approach whereby each system on the network is secured to the greatest possible degree Choke Point forces attackers to use a narrow channel to bypass the network
- 15. Testing a Firewall Configuration 15 • A faster and easier method is available with the Linux firewall implementation • Allows you to manually generate tests • Suppose our local network is 172.16.1.0 • And we allow only TCPconnections
- 16. Example 16 # ipchains -C forward -p tcp -s 172.16.1.0 1025 -d 44.136.8.2 80 -ieth0 accepted # ipchains -C forward -p tcp -s 172.16.2.0 1025 -d 44.136.8.2 80 -ieth0 denied # ipchains -C forward -p udp -s 172.16.1.0 1025 -d 44.136.8.2 80 -ieth0 denied # ipchains -C forward -p tcp -s 172.16.1.0 1025 -d 44.136.8.2 23 -ieth0 denied source Destination Wrong Wrong Wrong
- 18. 18 Conclusion
- 19. T H A N K U TESTING A FIREWALLCONFIGURATION 19