RE: External clients & firewall not in a domain

  • From: "Steve Moffat" <steve@xxxxxxxxxxxxxxxxxxxxxxxxxx>
  • To: "[ExchangeList]" <exchangelist@xxxxxxxxxxxxx>
  • Date: Fri, 5 Sep 2003 14:17:55 +0100

Ahhh...the open port buttons strike again.
 
 
:))


________________________________

From: Mike Liddekee [mailto:mliddekee@xxxxxxxxx] 
Sent: Friday, September 05, 2003 10:03 AM
To: [ExchangeList]


http://www.MSExchange.org/


The only way for outlook to log in from the outside (even though you
already have the ip open) is to have several ports open at that address.
However opening those ports blindly to the internet == BAD.  Repeat
after me... "I will not open up my network to hackers"

 

Since you're using Exch2K, You would have really two options:  1) VPN
and 2) OWA.  Of course I guess you could do dial-up RAS but does anybody
actually still use that stuff?  :-)

 

We use a combination of VPN & OWA here at our facility and have a number
of users who travel frequently with laptops.  Do you have any type of
firewall in place besides the ISA server?

 

 

Regards,

Mike Liddekee

Network Engineer

 

Humco Holding Group, Inc.

7400 Alumax Dr. 

Texarkana, TX  75501

Ph:  (903) 831-7808 ext 697

 

-----Original Message-----
From: Varga Pavol [mailto:pavol.varga@xxxxxxxxxxx] 
Sent: Friday, September 05, 2003 1:11 AM
To: [ExchangeList]
Subject: [exchangelist] RE: External clients & firewall not in a domain

 

http://www.MSExchange.org/

    Hello Tom,

    we use M$Outlook 2000, and we want access ours mailboxes for
e-mailing.

    Regards!

    Pavol.

 

    

        -----Original Message-----
        From: Thomas W Shinder [mailto:tshinder@xxxxxxxxxxxxxxxxxx] 
        Sent: Thursday, September 04, 2003 9:44 PM
        To: [ExchangeList]
        Subject: [exchangelist] RE: External clients & firewall not in a
domain

        http://www.MSExchange.org/

        Hi Varga,

         

        What services do you want to access from the external Outlook
client? What version of Outlook are you using?

         

        Thanks!

        Tom

         

         

        Thomas W Shinder

        www.isaserver.org/shinder <http://www.isaserver.org/shinder>  

        ISA Server and Beyond: http://tinyurl.com/1jq1

        Configuring ISA Server: http://tinyurl.com/1llp
<http://tinyurl.com/1llp> 

         

                -----Original Message-----
                From: Varga Pavol [mailto:pavol.varga@xxxxxxxxxxx] 
                Sent: Thursday, September 04, 2003 2:29 PM
                To: [ExchangeList]
                Subject: [exchangelist] External clients & firewall not
in a domain

                http://www.MSExchange.org/
                
                

                        
                        Hi all, 
                        please, how to configure firewall (which is not
in domain) and Exchange 2k Server (with internal IP) to allow external
client access to their mailboxes?

                        
                        I have already set: 
                        Exchange 2k Server 
                        - Active
Directory\Users\Properties\Dial-in\Remote Access Permission (Dial-in or
VPN)\Allow access & No Callback

                        ISA Server (firewall & proxy server, not in a
domain) 
                        - Access Policy: 
                                Mail wizard rule SMTP, SMTPs 
                                outgoing smtp, pop3, imap4 
                                ssh, imcp, dns 
                                + IP Packet filters VPN (PPTP, L2TP),
DHCP, DNS, ICMP 

                        I was trying also to configure Outlook account
with external IP of firewall = Outlook could not logon. 
                        Is VPN configuring both client and servers only
way to resolve it? And how? 

                        Thank for any advice. 

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