I want to know how users can go to internet by proxy server??? i have setup a LAN and Internet firewall with a natting for the internal users.Windows team has ISA server (proxy server) ,located in inside network, client workstation has specified a proxy server IP address in internet explorer browser, tools options.
what my understanding is when a users type's a yahoo.com in a browser,the browser looks for the proxy server ip address,the packet comes to default gateway (core switch SVI vlan interface) from there it routes to proxy server address.Proxy server do the lookup and forwards to its default gateway (again core switch SVI) from core switch default route to firewall and the packet is natted and sent out to internet router and so on to the ISP.
Can anybody explain me why the packets are not going to internet.what i m missing.
I know that ISA with 2 LAN cards internal and external are statically natted on firewall,to make internet access for users.But i want to clear my above thought,pls dont Embarrass me and make me understand where my thinking is wrong.
I have posted for Expert's solution by knowing the mistake,can u make detailed explanation to make better understand of the problem. Nobody in the world is 100% and if so they r then thay have learned in this world.
As per ur above mail guidance i have done the static natting for the ISA server which is placed on inside interface LAN. Users are now able to browse the internet.
Jon what are the best practices for ISA to place in the network if i m not wrong it shld be in the DMZ interface with a static natting???
In future we will have 2 No's ISA servers so what is the best practice for the setup,what my thinking is 1 in the inside interface and the other in the DMZ interface with static natted, Users who have put the proxy setting for ISA-1 will hit traffic to ISA-1 and then ISA-1 will forward traffic to ISA-2 which is located in DMZ. (in terms of windows config)
For sure i have to enable natting between the DMZ interface and the inside interface.
Hi everyone, I would like to thank you in advance for any help you can provide a newcomer like myself!
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