Security Basics mailing list archives
RE: NetScreen XP and NetMeeting
From: "HOULE, FRANCIS" <francis.houle () bell ca>
Date: Fri, 13 Dec 2002 09:00:39 -0500
Hello, I beleive Netmeeting is using H.323. There is a support for H.323 sessions in the Netscreen. If you configure that support you will not have to open all those dynamic ports. It will track the session and allow the ports to be open dynamically. That way, you are a lot more secure than openning a range of ports permenently. -- Francis Houle Conception Interréseautage Bell Canada -----Original Message----- From: Sarbjit Singh Gill [mailto:ssgill () gilltechnologies com] Sent: 12 décembre, 2002 08:59 To: Rick Darsey; security-basics () lists securityfocus com Subject: RE: NetScreen XP and NetMeeting Greetings and thanks for the reply. To give you folks some more details: The NetScreen 5XP does not support a DMZ:Only trusted and untrusted interfaces. I have a ADSL router/modem. There is no NetMeeting server. What my client would like to do is use the built-in netmeeting client in Windows to "chat/talk(audio)/see(video)/remote control/share application with another person on the internet with similar software. I believe this no-server scenario can hold up 20 people in a single chat session. It is similar when one stars the netmeeting from MSN Messenger. Cheers Gill -----Original Message----- From: Rick Darsey [mailto:rdarsey () aims1 com] Sent: Thursday, December 12, 2002 9:49 PM To: ssgill () gilltechnologies com Subject: RE: NetScreen XP and NetMeeting Gill, What is the layout of your network. Do you have a router and a firewall, or is the router acting as the firewall. If you have both, would it be possible to place the Netmeeting server outside of the firewall, between it and the router? Depending on the type of OS, ie Windows 2000 server, etc., there are some filtering capabilities within the OS that will let you limit the traffic to the server. Just an idea. Rick -----Original Message----- From: Sarbjit Singh Gill [mailto:ssgill () gilltechnologies com] Sent: Wednesday, December 11, 2002 5:19 PM To: Rick Darsey Subject: RE: NetScreen XP and NetMeeting Greetings Rick, The NS XP does not support a DMZ. Gill -----Original Message----- From: Rick Darsey [mailto:rdarsey () aims1 com] Sent: Thursday, December 12, 2002 6:22 AM To: ssgill () gilltechnologies com; security-basics () lists securityfocus com Subject: RE: NetScreen XP and NetMeeting I would think you could setup the NetMeeting server in a DMZ zone outside of the firewall, and then turn on keep state on the firewall to allow users within the LAN to connect, but I am not sure about the keep state part. Rick Darsey -----Original Message----- From: Sarbjit Singh Gill [mailto:ssgill () gilltechnologies com] Sent: Wednesday, December 11, 2002 1:37 PM To: security-basics () lists securityfocus com Subject: NetScreen XP and NetMeeting Greetings, As the subject goes, i need to get net meeting to work via NetScreen. I found a KB article(http://support.microsoft.com/default.aspx?scid=kb;en-us;158623) but it seems to show, i had to open a whole range of ports. I am skeptical about that! e.g.. Pass through primary TCP connections on ports 522, 389, 1503, 1720 and 1731. Pass through secondary UDP connections on dynamically assigned ports (1024-65535). the above shows a whole range of ports that i have to open. Is there a work around. Kind Regards Gill
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Current thread:
- RE: NetScreen XP and NetMeeting Sarbjit Singh Gill (Dec 12)
- Re: NetScreen XP and NetMeeting Igor D. Spivak (Dec 13)
- RE: NetScreen XP and NetMeeting HOULE, FRANCIS (Dec 13)
- RE: NetScreen XP and NetMeeting Sarbjit Singh Gill (Dec 16)
- <Possible follow-ups>
- RE: NetScreen XP and NetMeeting Murat_Korkmaz (Dec 12)
- RE: NetScreen XP and NetMeeting Gunn, Jeff (Dec 13)
- RE: NetScreen XP and NetMeeting Sarbjit Singh Gill (Dec 16)
- AW: NetScreen XP and NetMeeting Robert Sieber (Dec 16)
- RE: NetScreen XP and NetMeeting Gunn, Jeff (Dec 16)
- RE: NetScreen XP and NetMeeting Brian Bruns (Dec 17)
- RE: NetScreen XP and NetMeeting Sarbjit Singh Gill (Dec 18)