RE: ISA-/DNS Query-Please Advice
- From: "Jim Harrison" <Jim@xxxxxxxxxxxx>
- To: "[ISAserver.org Discussion List]" <isalist@xxxxxxxxxxxxx>
- Date: Sat, 13 Aug 2005 13:01:45 -0700
Those are two separate questions.
You need to install DNS on ISA *or* you need to point the internal
clients to the ISP DNS server.
-----Original Message-----
From: hodakara kara [mailto:hatem20102011@xxxxxxxxx]
Sent: Saturday, August 13, 2005 12:35 PM
To: [ISAserver.org Discussion List]
Subject: [isalist] RE: ISA-/DNS Query-Please Advice
http://www.ISAserver.org
dear jim;
thanks for reply.
Actually i do not want to let the external user connect to my internal
network , do i need to make dns on isa
Jim Harrison <Jim@xxxxxxxxxxxx> wrote:
http://www.ISAserver.org
Two problems with this scenario:
1 - you don't own the 90.0.0/24 netblock - you should not be
using it
for your internal network. Instead, use something from the
RFC-1918
set:
10/8
169.254/16
172.16/12
192.168/16
2 - Unlike WinProxy, ISA will *not* perform "DNS proxy", so
installing
DNS on the ISA will be required. Just *don't* make this DNS
server
available from the Internet (no "allow all" rules)
Jim
-----Original Message-----
From: hodakara kara [mailto:hatem20102011@xxxxxxxxx]
Sent: Saturday, August 13, 2005 3:59 AM
To: [ISAserver.org Discussion List]
Subject: [isalist] ISA-/DNS Query-Please Advice
http://www.ISAserver.org
Dear all,
My network consist of the follwoing enviroment - with WinProxy
as
Firewall- :-
1. Domain Controller,with DNS on it ,, with the following
Settings
on the IP :-
IP:- 90.0.0.10
SM: 255.255.255.0
GW: 90.0.0.20 --------------------------> this is the internal
IP of
WinProxy Interface.
DNS: 90.0.0.10 --------------------------> it register it self
in the
current DNS - internal DNS-
2. 30 users, Windows XP-Pro, SP2 on it and they configured to
register
there self in the DNS which is ( 90.0.0.10 ), and GW which is (
90.0.0.20), i mean all the users have this DNS ( 90.0.0.10), and
have
this Default Gateway ( 90.0.0.20).
3. The internal DNS server configured to forward all the quires
to the
internal IP-Address of WinProxy which is ( 90.0.0.20), inorder
to be
able to browse internet names and able to reslove the external
domains
as well.
4. One Firewall which is WinProxy, not under our doamin, which
have 2
NIC with the following informations:-
First Nic on WinProxy:-
===================
IP : 90.0.0.20
SM : 255.255.255.0
GW : N/A
DNS : N/A
Second Nic on WinProxy which is connected to Router, and then
the router
connect to VSAT:-
================================
IP : 213.255.237.106
SM : 255.255.255.248
GW : 213.255.237.105
DNS : 213.255.237.8
213.255.237.9
and we are behind firewall, even we configure the Outlook to use
the IP-
Address of the internal WinProxy interface as POP3 & SMTP.
and on the WinProxy, we configured the SMTP& POP3 with the real
IP-Address.
=====================================================================
Now we are going to install ISA server 2000.
i want to know if this steps which i am going to do is correct
or not .
1. i will bring new server for ISA, with 2 Nic.
2. install Win Server on it .
3. Give the internal interface of the ISA this IP ( 90.0.0.10),
and this
DNS ( 90.0.0.10), without Gateway on it .
4. install DNS server on ISA.
5.Configure the DNS to lisiten only on the Internal Interface -
not
external.
6.Create the Forward lookup Zone and Reverse Lookup Zone.
7.Make the Local DNS forward the query to the external DNS of
the ISP.
8. install the domain controller on the other machine and let it
to
register it self on the Internal IP of ISA. and put the gateway
also for
that .
9. let all the user register them self in the the current DNS.
10. Configure the users normally.
11. make sure that the server & the Clients able to browse and
see the
internt.
=================================================================
second Part , install the DNS server on the ISA server it self
and we
will start working on it .
So my question is :-
1. is there any thing wrong in this configuration, from
installing DNS
server on the ISA server and let all the users register them
self in the
DNS which is located on the ISA, and configured the ISA server
to
forward the quires to the external DNS of the ISP ? if there is
any
Problem, do you receommend any other solution . ?
2. After i install on each client the Firewall Client software
which is
come from ISA server , is there any traffic i should allow for
the
inbound / outbound for the DNS to go from ISA server to the
external DNS
server of the ISP, so is there any Protocol Rule or Packet
filter should
i do it , in order to let the traffic go out from my ISA server
to the
external DNS, and to inter from the external DNS to my ISA
server ?
Please Help in this situation , as soon as possible .
--
thanks
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