RE: It is possible to install ISA web proxy server to joint with e

Yes, you can do this.

First ISP IP --> Mail Gateway/Filter --> Internal network switch --> Mail
Server on Internal network

Second ISP IP --> ISA Server --> Internal network switch --> browsing users

However, I would recommend you use ISA Server to publish mail services as
well because then you would be more secure, thanks to ISA's firewalling
capabilities.

In the above scenario, even if you have properly configured ISA server for
maximum security, your internal network is still vulnerable to attack if the
connection from the first ISP IP is not secure. This can act as a potential
backdoor.

HTH,

--
Shijaz Abdulla
MVP, MCSE:Security, CCNA

Articles: www.shijaz.com/isaserver
Forums: www.tech-links.org


"vuth" wrote:

I mean that, i want to install ISA web proxy to share internet connection to
user, and this ISA server user other ISP IP address . and keep my routing
mail to still going out by using old IPS address

Note: We have two ISP provide to access internet
does anyone can help me to going to direct document about his senario

thank,


"Shijaz Abdulla" wrote:

Yes.

--
Shijaz Abdulla
MVP, MCSE:Security, CCNA

Articles: www.shijaz.com/isaserver
Forums: www.tech-links.org


"vuth" wrote:

It is possible to install ISA web proxy server to joint with our domain that
have exiting hardware firewall with wingate as a proxy server

note: my existing network are

DNS
WIN
Exchanger Server
Gateway
Smart host at mail filter

Thanks



.

Relevant Pages

  • Re: Intermittent Firewall 15108 Events on SBS2003/ISA2004
    ... This newsgroup only focuses on SBS technical issues. ... of |> the internal network object). ... If the ISA server receives a package with an |> internal IP as source address from the external port, the package would be |> treated as a spoof attack. ... |> 825763 How to configure Internet access in Windows Small Business ...
    (microsoft.public.windows.server.sbs)
  • Re: Eventid 15108... spoof address ????
    ... This newsgroup only focuses on SBS technical issues. ... the ISA server identifies the spoof attacking according to ... |> the internal network object). ... |> server could receive some spoof attacks from the internet. ...
    (microsoft.public.windows.server.sbs)
  • RE: Unable to allow Internet Access from ISA Server Machine
    ... Thanks for the info. I've got my ISA Server setup exactly this way. ... Server is only aware of two networks: the Local Host network that represents ... the ISA Server computer itself, and the Internal network, which includes all ... I configured the Local Host network to enable Web Proxy client connections ...
    (microsoft.public.isaserver)
  • RE: Intermittent Firewall 15108 Events on SBS2003/ISA2004
    ... Thank you for posting in SBS newsgroup. ... the ISA server identifies the spoof attacking according to the ... the internal network object). ... 825763 How to configure Internet access in Windows Small Business Server ...
    (microsoft.public.windows.server.sbs)
  • Re: Still having firewall issues
    ... How many subnets are in your SBS internal network? ... > 4) Click Add Adapter and then select Server Local Area Connection. ... No default gateway difined. ... > to the same internal default gateway address as the ISA Server computer. ...
    (microsoft.public.windows.server.sbs)
Loading