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rules oreder

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rules oreder - 25.Oct.2006 2:32:25 AM   
mekaneky

 

Posts: 95
Joined: 15.Feb.2006
Status: offline
Hi all ,

ISA 2006 SE on 2003 EE with SP1 , i have alot of rules and i want to know what is best order to avoide miscopnfigurations.

we always using that parameters so how can i rorder them ( allow / deny ) ( selected protocol / all protocols / all excpet selected ) ( all users / selected users )

anyone can help in which must be above ??
Post #: 1
RE: rules oreder - 26.Oct.2006 5:04:39 AM   
Guest
Hi mekaneky,
the rules order is very important but you are too general here.
what exactly are you trying to do?

(in reply to mekaneky)
  Post #: 2
RE: rules oreder - 28.Oct.2006 4:16:16 AM   
mekaneky

 

Posts: 95
Joined: 15.Feb.2006
Status: offline
hi ,
my network infra as
ISA 2006 SE on win2003 EE with SP1
WAN-NIC :  IP : 81.x.x.x / 30
                    DG : 81.x.x.x / 30 ( my adsl router lan IP )
                    DNS : empty

INT-NIC1   : IP : 172.20.20.1 / 24
                     DG : empty
                     DNS : 172.20.20.100

INT-NIC2   : IP : 10.0.0.1 / 24
                   DG : empty
                   DNS : 10.0.0.100



DNSSERVER

NIC 1  :  IP: 172.20.20.100 / 24
              DG : 172.20.20.1
              DNS : 127.0.0.1

NIC2 : IP : 10.0.0.100/24
           DG : 10.0.0.1
           DNS : 127.0.0.1

DNS listen on all server NICs and forward to ISP dns servers

ISA rules :

1- deny >> ( HTTP / HTTPS / FTP / HTTP PROXY ) >> form clients on NIC2>> to selected domains and URL >> always >> all users

2- allow >>> all except select >> from clinets on NIC2 >> external >> always >> all users

3- allow >>> DNS / DNS SERVER >> from computer object ( dns-server ) >>> to external >> always all users

4- allow >> all protocols >> local host >>> external >> always >> all users
5- allow >>> all protocols >> clients on NIC1 >> external >>> always >> all users

6- allow >> all protocols >> NIC1 & local >> NIC1 & local >> always >> allusers

7-allow >> all protocols >> NIC2& local >> NIC2& local >> always >> allusers
8-  allow >> published RDP nonstander port >> from selected network >> to 172.20.20.100 >> always
9- allow >> published RDP >> from selected network >> to 172.20.20.1 >> always
10 - allow >> published FTP>from selected network >> to 172.20.20.100 >> always

11- last >> defualt tule.

how can i order them with take in consdations :
  • in rule 2 may i will make it for Authenticated Users and network services
  • in rule 6 and 7 i allow all users to make it firewall client and share work OK( if it reconfigure i would do .)

kindly how can i order them and any recommendtions

(in reply to Guest)
Post #: 3
RE: rules oreder - 28.Oct.2006 5:51:38 PM   
Guest
your rules open up way too many ports.
the idea is to keep closed as many ports as possible and allowing strict the ones needed.
rule 4 should not exist.
in rule 2 you should allow just the protocols needed not block some and the others remain wide open.
rules 5,6,7 opens pretty much everythings
quote:

in rule 6 and 7 i allow all users to make it firewall client and share work

you don't have to worry about that.

(in reply to mekaneky)
  Post #: 4

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