Minimum NAT/firewall settings for iChat audio/video to work?

I've read the docs on teh ports and firewall issues but it is still unclear to me.
I have
1. An OS X Server 10.5.2 connected to the internet behind a router with NAT and running a firewall. NAT and of course the firewall are under my control. I've opened up the iChat Server SSL port (5223) on the OS X Server's firewall. I've put a 5223 redirect on the router to my OS X Server system. iChat is configured on this system and several users have permission to use iChat. The NAT table on the router is restricted, only ports I want to serve (e.g. 25, 22, 5223) are redirected to my server, the rest of incoming connections are blocked at the NAT (safer that way).
2. An OS X 10.5.2 client behind a NAT setup in another part of the world.
3. An OS X 10.5.2 client behind a NAT setup in another part of the world.
Both clients I can manage the firewall of the client, but I cannot manage anything on the router.
WIth this set up on both systems users have successfully connected to my OS X Server's iChat server using SSL. Text chat works. So I can assume that iChat Server works, that the permissions and login is OK, that SSL is OK.
But neither audio not video works. I cannot establish an audio or video connection because the connection fails. The iChat connection log says
2008-02-21 20:49:53 +0100: user@fqdn2: Error -8 (Did not receive a response from 0x18c09b30.)
there is nothing in appfirewall.log on the client.
The clients should work OK behind NAT. But my guess is that the server needs more than what I am giving it. However, I have been unable to find out what a minimum set of NAT redirects and firewall ports open is that would enable me to let these two clients do voice chat via my OS X Server at that other location.
Any tip for information on how to set up the server side minimally and safely would be welcome.
Thanks,
G

Hi,
Several things.
1) iChat server does in fact use an SSL Login on port 5223 (Tiger does not do the SSL but is still on the same port.
This does not allow the other data on port 5220 that the Jabber side of iChat needs.
Apple Doc http://docs.info.apple.com/article.html?artnum=93208 see item 6
2) It also ignores the fact iChat uses a completely different set of ports to the A/V Chat
So an AIM Login is port 5190 in those mentioned in item 6
port 5297, 5298 and 5353 are the Bonjour ones.
That leaves 5060, 5678, 16384-16403 for A/V chats in Tiger
5678, 16393-16402 in Leopard
The pics and Table are for Panther and Tiger. See the Table at the bottom http://www.ralphjohns.co.uk/pantherports.html
The changes from Tiger to Leopard in the port Usage for A/V chats is documented here http://docs.info.apple.com/article.html?artnum=306688 (Hence the none use of port 5060 and the smaller groupfor the actual A/V Chats)
3) Check out the two server forums for Leopard > iChat Server http://discussions.apple.com/forum.jspa?forumID=1235
And Tiger/OS X Server 10.4 > Collaboration Services http://discussions.apple.com/forum.jspa?forumID=700 as they maybe other issues that I am not aware of on the Server side.
So Leopard Jabber/iChat Server needs 14 ports
5220, 5222, 5223 on TCP and
5678, 16393-16402 on UDP
Tiger needs the A/V ports to include 5060 and extend the group to 20 ports (16384-16403)
I hope this helps.
8:44 PM Sunday; February 24, 2008

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IChat audio/video not working in a particular scenario.

Three differnt people with 3 different setups trying to do an audio chat:
John: MacBook(2.0Ghz, Leopard), connected via AirportExpress, using an AIM account
Anne: MacBook(2.4Ghz, Snow Leopard), connected via a 3G USB Modem, using a .Mac account
Mark: iMac(2.0 Ghz C2D, Tiger), connected via AirportExtreme, using an AIM account
John can voice and video chat with both Anne and Mark, no problem. But Anne and Mark constantly get the Error-8. (But strangely Anne and Mark can share files via iChat just fine.)
If it was a firewall issue, wouldn't one of the three be excluded from any voice/video chat completely ? Im starting to wonder if it's the NAT/PMP issue as well, cause it doesn't seem to be an issue when connecting to the other person.
I have scoured the web looking for a solution but to no avail.
This is a snippet from the error log:
Video Conference Error Report:
11.657163 @/SourceCache/VideoConference/VideoConference-415.13/SIP/SIP.c:2917 type=4 (900A0015/0)
SIPConnectIPPort failed
13.658210 @/SourceCache/VideoConference/VideoConference-415.13/SIP/SIP.c:2917 type=4 (900A0015/0)
SIPConnectIPPort failed
Cheers

Hi,
Re 1)
iChat makes a Connection that is Peer-to-Peer when doing Audio Only and Video chats.
To do this it uses a method of going through NAT Devices (Network Address Translation)
NAT Is not a standard. It is a vague description of things that happen in most domestic routers to share one IP between many computers and other devices.
There are about 4 main ways of doing it See Here
Realistically iChat can be Fussy as to how NAT is done. (Some methods don't seem to "Play Nicely" together)
So you can get what looks like intermittent symptoms.
Re 2)
I am on a Leopard booted computer and my AIRPORT UTILITY is version 5.5.1
I don't have an Airport Base Station so posting a pic is useless at this point.
The older firmware I am thing of popped up a very small Window asking for the Password before giving you the main window.
The version I have lists the different Base Station it can find down the left with a manual Configure Button and a first time set up button on the right (I forget the name).
It sounds like he has something closer to my version.
The Port Mapping Protocol may be "Greyed Out" if the Device is NOT "Sharing an IP" on the main Internet icon/pane. (On the current version I believe the NAT tab disappears if this is the case).
Re the Zyxel.
Not particularly iChat Friendly as a range.
There is something about them logging in to AIM on Port 5190 on the TCP Protocol and iChat send files on port 5190 on UDP that these modems don't like (Dual use of the same port)
This may be related to Port Forwarding.
With setting up Port Forwarding you point one port to one IP (Computer) (multiple ports one at a time for iChat)
This means that other computers cannot then use those ports (ports Cannot Be Forwarded Twice).
Not all devices specify Protocols to do this but the Zyxels do seem have an issue with and for some reason this crosses over into A/V Chats.
SOLUTION
In iChat go to the Preferences > Accounts > Server Settings tab when Logged out.
Change th Login port from 5190 to 443
This port is memorable as it is below the 1024 threshold in most domestic devices (all ports below this are Open to everyone) and is used by Web Browser for Secure sites (such as Banks and the Sign-in here to post).
It is also used by some mail servers.
The Modem most likely routes.
This means two things.
1) the Airport Base Station should NOT - Set it to Bridge (Off) Mode in the drop down at the bottom of the Internet pane (Port Mapping will not be needed then either).
2) the ports need to be allowed in the Modem.
See this page
This is the instructions to access a P660R-HW T1v2 I am not sure what the difference the HW means
Do the pics look like his set up pages ?
Most likely he will have to Look for UPnP - Try the Advanced menu item.
He will not need the Port Forwarding if he Enables UPnP.
He may have set up pages that look more like these pics EQ 660 R
Here you can plainly see UPnP in the middle menu 9At the bottom)
Summary
Change port for Login in iChat
Set Base Station to Not Route.
Enable UPnP in Zyxel modem. (DO NOT use Port Forwarding despite the Links (they are just for the Pics and Instruction on how to access the device).
If he cannot find UPnP come back to us.
He may have to set Port Forwarding if it is only one computer.
As he is on Tiger he cannot do iChat Screen Sharing so that will not be so much of an issue.
8:36 PM Friday; April 30, 2010
Please, if posting Logs, do not post any Log info after the line "Binary Images for iChat"

IChat audio/video not working: bonjour over computer-to-computer network

My girlfriend has a brand new MacBook Pro 15". I have a 3 year old PowerBook. Both running 10.4.9 and iChat 3.1.8. We are currently sitting right next to each other, and yet have been unable to connect to an audio or video chat by any method.
To completely eliminate the router from the equation I created a computer to computer network which she joined. Both of us have our firewalls off, and both of us have our Quicktime streaming speed set to 1.5Mbps. We tried to create an audio connection over Bonjour. I got an error -7 and she got an error -8.
There are many threads reporting the same error, but most of the solutions involve changing router settings. I figured that since this is on a computer-to-computer connection there is no router involved. It would be nice to be able to get this working over the general internet, but I figure if it doesn't work in this very limited setting it will never work. Any help? Much appreciated.

Yep - did that on both computers, to no avail:
Here's the first section of the error messages from both computers. (I can post more if it's helpful.)
Date/Time: 2007-06-09 14:39:41.370 -0500
OS Version: 10.4.9 (Build 8P135)
Report Version: 4
iChat Connection Log:
AVChat started with ID 1641059161.
0x5294770: State change from AVChatNoState to AVChatStateWaiting.
shwayder@oberon2: State change from AVChatNoState to AVChatStateInvited.
0x5294770: State change from AVChatStateWaiting to AVChatStateConnecting.
shwayder@oberon2: State change from AVChatStateInvited to AVChatStateConnecting.
0x5294770: State change from AVChatStateConnecting to AVChatStateEnded.
Chat ended with error -7
shwayder@oberon2: State change from AVChatStateConnecting to AVChatStateEnded.
Chat ended with error -7
Date/Time: 2007-06-09 14:41:41.469 -0500
OS Version: 10.4.9 (Build 8Q1058)
Report Version: 4
iChat Connection Log:
AVChat started with ID 1641059161.
nicole@nicole-computer1: State change from AVChatNoState to AVChatStateWaiting.
0x4be3e0: State change from AVChatNoState to AVChatStateInvited.
0x4be3e0: State change from AVChatStateInvited to AVChatStateConnecting.
nicole@nicole-computer1: State change from AVChatStateWaiting to AVChatStateConnecting.
nicole@nicole-computer1: State change from AVChatStateConnecting to AVChatStateEnded.
Chat ended with error -8
0x4be3e0: State change from AVChatStateConnecting to AVChatStateEnded.
Chat ended with error -8
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What are the ports required for the Audio, Video and A/V conferencing when the following end points are enabled for QoS in Lync 2013 server?

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What are the ports required for the Audio, Video and A/V conferencing when the following clients are enabled for QoS in Lync 2013 server?
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Looking for a back up drive for photos and videos that works with time machine, prefer wireless. Time capsule has poor reviews and already have BT hub

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IChat Audio/Video not happening

Three differnt people with 3 different setups trying to do an audio chat:
John: MacBook(2.0Ghz, Leopard), connected via AirportExpress, using an AIM account
Anne: MacBook(2.4Ghz, Snow Leopard), connected via a 3G USB Modem, using a .Mac account
Mark: iMac(2.0 Ghz C2D, Tiger), connected via AirportExtreme, using an AIM account
John can voice and video chat with both Anne and Mark, no problem. But Anne and Mark constantly get the Error-8. (But strangely Anne and Mark can share files via iChat just fine.)
If it was a firewall issue, wouldn't one of the three be excluded from any voice/video chat completely ? Im starting to wonder if it's the NAT/PMP issue as well, cause it doesn't seem to be an issue when connecting to the other person.
This is a snippet from the error log:
Video Conference Error Report:
11.657163 @/SourceCache/VideoConference/VideoConference-415.13/SIP/SIP.c:2917 type=4 (900A0015/0)
[SIPConnectIPPort failed]
13.658210 @/SourceCache/VideoConference/VideoConference-415.13/SIP/SIP.c:2917 type=4 (900A0015/0)
[SIPConnectIPPort failed]
Cheers

Hi,
Mark should go to the set up pages of the Airport he has and in the Internet icon/Pane > NAT tab he should have Port Mapping Protocol turned On.
If he has the much older firmware I will need to see pics (again) to remind me.
The other potential issues is what modems are John and Mark using in front of the Airport base Stations ?
Are they routing modems ? Cable modems tend not to route and DSL one do.
They should not have two DHCP servers on their LAN's ( A Base station set to "Share An IP" will be doing DHCP and a routing modem will most likely be doing it by default)
9:25 PM Thursday; April 29, 2010
Please, if posting Logs, do not post any Log info after the line "Binary Images for iChat"

Ichat audio/video

I know many people have posted their issues with ichat's audio/video, but I haven't found any solutions that would help me. My problems are, every time I open ichat's preferences and try to click on 'Audio/Video' ichat crashes, you can probably guess that I also can't video chat with any of my peers, nor can I screen share. A couple of months ago I was able to, I'm not sure if there is any relation, but ever since I set up time machine through my AirPort Extreme Base Station, thats when I noticed problems. If any additional info is need to help solve my problem please let me know. Thanks for the help.

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Use the Manual Configure button.
Go to the Internet iCon/pane.
Select NAT tab
Enable Port Mapping Protocol (You do not have to set ports)
From the first part of the Internet Pane make sure any DNS server listed are copied or show in System Preferences > Network > Advanced Button > TCP/IP tab.
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Post back with results as we may have to get you to delete a .plist to get ichat to be stable.
9:22 PM Wednesday; April 7, 2010
Please, if posting Logs, do not post any Log info after the line "Binary Images for iChat"

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It doesn't matter if I'm on my wireless network (linksys WRt54G) or connected via ethernet. My firewall settings in System Preferences is open.
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Hi,
Welcome to the  Discussions
I am a bit confused as to what stage you are up to.
I think it is the difference in the words you had used (and where you have used them) compared to how I tend to think about iChat
I would like to use iChat. I set up a .mac account, a Google/Gmail account and an AIM account.
I take this means that you have Registered Screen Names at the required places.
I get to the Account Set Up page, enter the log-in info, get to the "Encrypted Chat" window, but cannot see any "Done" button that iChat says I have to select to start using iChat.
I am therefore assuming this mean you are stuck in the Start Up Screens ?
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A place to Add ("set up" in my speak) an AIM or Apple Screen name. It has a place to Add your First Name Last name details - which may be pre-filled from the Address Book.
This pic is from iChat 4 but should be the same in iChat 5
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Try setting up just one Name (You can add more in iChat Later).
If that does not work can you click though all the screen without adding any details at all ?
Longer version of this here http://www.ralphjohns.co.uk/versions/ichatvers4/howtoStartiChat.html
As I provided a link to my Site I am required to place this:-
I may receive some form of compensation, financial or otherwise, from my recommendation or link.
9:59 PM Tuesday; November 9, 2010
Please, if posting Logs, do not post any Log info after the line "Binary Images for iChat"

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Hi.
I am unable to connect two computers to chat over AIM with iChat AV 3.
Both of us are using ibook 1.42, 10.4.6, isight, iChat AV 3. Both of us can connect to the appleu3test03 test page successfully but when we try to connect over AIM we both get the dreaded '<user> declined' message.
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Using the above settings an 8 minute video would be encoded in around 20 minutes (depending on computer speed) and would be well under 100MB.
Is that too big?
Message was edited by: Ian R. Brown

Firewall settings for websites

Hello All:
Is there a way to set a Firewall setting/level for an individiual web site?
We have a DSL service and use a Verizon Westell 7500 modem/router with four ports. The Firewall setting had been on medium and the Firewall was turned off on the Mac Mini. With these settings we were unable to get into a web site.
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Minimum NAT/firewall settings for iChat audio/video to work?

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