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Proxy servers-firewalls

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Ali Asgar Patanwala
Ali Asgar Patanwala

Browser proxy, Network security, firewall, Animated process of proxy in computer

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Proxy Servers & Firewalls
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Objectives
What is proxy ? Proxy Proxy is hardware / software Indirect access to other networks e.g INTERNET. all computers on the local network have to go through it before accessing information on the Internet. Organization , universities , companies use proxy systems Proxy act as gateway Proxy act as Cache Server/Firewall Proxy share a connection to others LAN INTERNET
Main purpose of using proxies ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Improve Performance ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],INTERNET 64 Kbps 128 Kbps 512 Kbps 1 Mbps
Filter Requests ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
What do you need for proxy installation? ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
How a proxy works ? ,[object Object]
IP : 172.16.0.2 Gw : 172.16.0.1 IP : 172.16.0.1 IP : 217.219.66.2 Gw : 217.219.66.1 LAN INTERNET Proxy Server Source IP 172.16.0.2 www.yahoo.com Dest IP 209.191.93.52
IP : 172.16.0.2 Gw : 172.16.0.1 IP : 217.219.66.2 Gw : 217.219.66.1 IP : 172.16.0.1 Change Source IP Address LAN INTERNET Proxy Server Source IP 217.219.66.2 www.yahoo.com Dest IP 209.191.93.52 Source IP 172.16.0.2 www.yahoo.com Dest IP 209.191.93.52
IP : 217.219.66.2 Gw : 217.219.66.1 IP : 172.16.0.1 Change Source IP Address & Destination IP Address IP : 172.16.0.2 Gw : 172.16.0.1 LAN INTERNET Proxy Server Source IP 209.191.93.52 Dest IP 217.219.66.2
IP : 217.219.66.2 Gw : 217.219.66.1 IP : 172.16.0.1 Change Dest. IP Address IP : 172.16.0.2 Gw : 172.16.0.1 LAN INTERNET Proxy Server Source IP 209.191.93.52 Dest IP 217.219.66.2 Source IP 209.191.93.52 Dest IP 172.16.0.2
IP : 172.16.0.2 Gw : 172.16.0.1 IP : 217.219.66.2 Gw : 217.219.66.1 IP : 172.16.0.1 LAN INTERNET Proxy Server Source IP 209.191.93.52 Dest IP 172.16.0.2
Proxy types ,[object Object],[object Object],[object Object],[object Object],Proxy setting in IE
Popular hardware & software proxies Software Proxy Hardware Proxy Ms. ISA Server Cisco PIX Squid Blue Coat Kerio WinRoute Cyberoam 1st Up Net Server Alacer CCProxy CProxy Windows ICS WinGate
What is firewall ? Firewall Firewall is hardware / software protects the resources of a private network from users from other networks Organization , universities , companies use firewall systems Firewall can act as gateway Firewall can act as proxy Firewall filter Incoming & Outgoing information LAN INTERNET
Main purpose of using firewalls ,[object Object],[object Object],[object Object],[object Object],  LAN INTERNET
How a firewall works ? ,[object Object],[object Object],[object Object],[object Object],[object Object],Sniffing Mode 1) An attacker tries to compromise a service on the protected network. 2) The Firewall identifies the attempt . LOG Alert  Reset Harden
What firewall protects us from ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Popular hardware & software firewalls Software Firewall Hardware Firewall Ms. ISA Server Cisco PIX Norton Internet Security Blue Coat Mcafee Internet Security Cyberoam ZoneAlarm Check Point Kerio NetScreen BlackICE D-link SECURESPOT Outpost WatchGuard
Thank You ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

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Proxy servers-firewalls

  • 1. Proxy Servers & Firewalls
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  • 3. What is proxy ? Proxy Proxy is hardware / software Indirect access to other networks e.g INTERNET. all computers on the local network have to go through it before accessing information on the Internet. Organization , universities , companies use proxy systems Proxy act as gateway Proxy act as Cache Server/Firewall Proxy share a connection to others LAN INTERNET
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  • 9. IP : 172.16.0.2 Gw : 172.16.0.1 IP : 172.16.0.1 IP : 217.219.66.2 Gw : 217.219.66.1 LAN INTERNET Proxy Server Source IP 172.16.0.2 www.yahoo.com Dest IP 209.191.93.52
  • 10. IP : 172.16.0.2 Gw : 172.16.0.1 IP : 217.219.66.2 Gw : 217.219.66.1 IP : 172.16.0.1 Change Source IP Address LAN INTERNET Proxy Server Source IP 217.219.66.2 www.yahoo.com Dest IP 209.191.93.52 Source IP 172.16.0.2 www.yahoo.com Dest IP 209.191.93.52
  • 11. IP : 217.219.66.2 Gw : 217.219.66.1 IP : 172.16.0.1 Change Source IP Address & Destination IP Address IP : 172.16.0.2 Gw : 172.16.0.1 LAN INTERNET Proxy Server Source IP 209.191.93.52 Dest IP 217.219.66.2
  • 12. IP : 217.219.66.2 Gw : 217.219.66.1 IP : 172.16.0.1 Change Dest. IP Address IP : 172.16.0.2 Gw : 172.16.0.1 LAN INTERNET Proxy Server Source IP 209.191.93.52 Dest IP 217.219.66.2 Source IP 209.191.93.52 Dest IP 172.16.0.2
  • 13. IP : 172.16.0.2 Gw : 172.16.0.1 IP : 217.219.66.2 Gw : 217.219.66.1 IP : 172.16.0.1 LAN INTERNET Proxy Server Source IP 209.191.93.52 Dest IP 172.16.0.2
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  • 15. Popular hardware & software proxies Software Proxy Hardware Proxy Ms. ISA Server Cisco PIX Squid Blue Coat Kerio WinRoute Cyberoam 1st Up Net Server Alacer CCProxy CProxy Windows ICS WinGate
  • 16. What is firewall ? Firewall Firewall is hardware / software protects the resources of a private network from users from other networks Organization , universities , companies use firewall systems Firewall can act as gateway Firewall can act as proxy Firewall filter Incoming & Outgoing information LAN INTERNET
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  • 20. Popular hardware & software firewalls Software Firewall Hardware Firewall Ms. ISA Server Cisco PIX Norton Internet Security Blue Coat Mcafee Internet Security Cyberoam ZoneAlarm Check Point Kerio NetScreen BlackICE D-link SECURESPOT Outpost WatchGuard
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