Regarding POP3 and SMTP

  • From: "arun prasadh" <mrarunprasadh@xxxxxxxxxxx>
  • To: isalist@xxxxxxxxxxxxx
  • Date: Mon, 11 Nov 2002 09:39:18 +0530


Dear Members,

I need your Help in configuring the access to my Internal /DMZ Network from Internet. We have a ISA FW protecting our Network.

My Internal Network uses a Private Address Range and my DMZ has legal
address.

I have created Protocol Rules to control my internal net users accessing the Internet.

I have created two Client Address Sets Net Users - Who can only Browse the internet , I have enabled HTTP , DNS for them Power User - Who can Browse , Download, FTP, Telnet , Send / Receive Mails. - We have enabled HTTP, FTP,DNS,Telnet, POP3,SMTP

Now I want to create another Client Address Set and assign to a Protocol
rule - who can send and receive SMTP mails only. The Mail Server is on the Internet.They should not browse , FTP, Telnet..

I tried creating a new protocol rule to allow the POP3 and SMTP traffic. It didn't work , only w! hen I add HTTP to it I am able to send and receive mails.

My doubt is whether I should have a IP Packet Filter also which should allow internal traffic to my internal clients.

We have a Basic Doubt , my understanding is the IP Packet Filters are used to control the inward traffic / access. I have problems like when the FW service is enabled the packet filter doesn't work. Only if I disable/ stop the FW service the Packet filter works. My understanding is the FW service should always be enabled.

Can someone clarify the
1.Whether the FW Service should be stopped for Packet Filters to Work
2.How do i create a Packet Filter / Protocol Rule for my Internal Net work users to send and receive POP3/SMTP mail from the Mail Servers on the Internet. ( My Internal Network uses Outlook 2K to send and receive POP3 / SMTP Mails)

Pls help me in resolvin! g the above issues.

Thanks and Regards

Arun.M

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