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Cable Modem won't work on SBS2000

Posted on 2003-12-11
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Last Modified: 2012-05-04
I have just installed a Motorola SB5100 Surfboard cable modem on our MS Small Business Server.  The modem appears to work OK and I can send and recieve email, ping www and IP adresses. What I can't do is surf the net, I assume that ISA is blocking HTTP in some way.

If I run the internet connection wizard and replace the cable modem wiith the old dial up settings the system works fine?
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Question by:DavidBurchett
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Author Comment

by:DavidBurchett
ID: 9928266
Need to get this fixed have increased points to 500
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Expert Comment

by:drev001
ID: 9930378
I must admit, I always use routers in situations like this as they're so cheap and exceptionally reliable. But back to the problem in hand. Does the cable connection have proprietary connection software for PPPoE? Is the cable modem provided by your ISP? Is it an Ethernet or USB connection? If ethernet, second NIC?
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Author Comment

by:DavidBurchett
ID: 9932564
Hi Drev001, nice to hear from you again.

As you can see I'm still developing our home network and learning heaps along the way!

I have had a look at other posts on experts and most seem to be of the same opinion, I now wonder if that would be the best way to go, what are the Pro's and Con's?
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Expert Comment

by:drev001
ID: 9934130
The pro's are that the dialling, connecting etc. is not done by the server, the link is always up and in my experience routers are ultra reliable and possibly slightly quicker.

There aren't really any cons that I can think of other than the fact that incoming connections (SMTP Mail feeds, running a web server, VPN etc.) need configuration work on the router but this is not really a negative thing, just something to be aware of.

An alternative to this would be to use a second network card and plug this into the ethernet interface on the modem. You may have better results with this. It's worth a go if you have a spare network card knocking around. 10MBit card would be fine.
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Author Comment

by:DavidBurchett
ID: 9936713
OK, thanks for that.

I have made enquiries about purchasing a router but so far all I can find are ADSL models, nothing that will work with a cable modem. One store told me I could use my existing D-Link 8 port Ethernet hub but I can't quite see how that would work, it would seem there would be no way of protecting the system if I bypass ISA and packet filtering, the hub has no software or any setup options, it's a basic model I guess.

I purchased and installed a second Ethernet NIC when Paradise came to install the modem, it is currently connected to the modem by a straight though CAT5 cable.  The modem is working correctly and is talking to the server OK. I can ping IP and www addresses from the server but can not surf or send/receive email (my 1st post is wrong, I thought the email was working).

Luckily I still have access to my old dial up account (till the 18th Dec anyway) and the old 56K dial up modem is still in the server so I am able to get online to check email and post messages to Experts etc. Of course I have to run the internet connection wizard each time to do so but that's not a big deal.  It seems odd that everything works fine when I use the dial up modem but it falls to bits when I set ICW to the cable modem.

What do you think I should do?

Continue to look for a router that works with cable modem or attempt to find the problem that is preventing it working with the NIC?

My servers IP settings are as follows
Microsoft Windows 2000 [Version 5.00.2195]
(C) Copyright 1985-2000 Microsoft Corp.

C:\Documents and Settings\Administrator>ipconfig/all

Windows 2000 IP Configuration

        Host Name . . . . . . . . . . . . : server
        Primary DNS Suffix  . . . . . . . : burchettfamily.local
        Node Type . . . . . . . . . . . . : Hybrid
        IP Routing Enabled. . . . . . . . : Yes
        WINS Proxy Enabled. . . . . . . . : No
        DNS Suffix Search List. . . . . . : burchettfamily.local

Ethernet adapter Local Area Connection:

        Connection-specific DNS Suffix  . :
        Description . . . . . . . . . . . : Realtek RTL8139(A) PCI Fast Ethernet Adapter
        Physical Address. . . . . . . . . : 00-05-1C-0A-DF-79
        DHCP Enabled. . . . . . . . . . . : No
        IP Address. . . . . . . . . . . . : 192.168.16.2
        Subnet Mask . . . . . . . . . . . : 255.255.255.0
        Default Gateway . . . . . . . . . :
        DNS Servers . . . . . . . . . . . : 192.168.16.2
        Primary WINS Server . . . . . . . : 192.168.16.2

Ethernet adapter Local Area Connection 3:

        Connection-specific DNS Suffix  . :
        Description . . . . . . . . . . . : ADMtek AN983 10/100Mbps Fast Ethernet Adapter
        Physical Address. . . . . . . . . : 00-02-2A-B2-24-6D
        DHCP Enabled. . . . . . . . . . . : No
        IP Address. . . . . . . . . . . . : 203.79.67.192
        Subnet Mask . . . . . . . . . . . : 255.0.0.0
        Default Gateway . . . . . . . . . : 203.79.67.1
        DNS Servers . . . . . . . . . . . : 203.96.152.4
                                            203.96.152.12

C:\Documents and Settings\Administrator>
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Expert Comment

by:drev001
ID: 9937918
I've known issues like this to occur when the ISP is expecting a specific MAC address to be connecting to them. It's possible that the MAC address of the network card is being passed to them rather than the cable modem. Give the ISP a call and ask them if this is a possibility.

As far as the router is concerned, you should get away with any cable\dsl router device that has two ethernet ports:

Internet
|
Cable Modem
|
Router (one port connected to the modem and the other port connected to the LAN via your switch)
|
LAN
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Author Comment

by:DavidBurchett
ID: 9938783
The guys from Paradise "phoned in" the MAC address of the cable modem when they installed it.  I just rang them to check and they confirm the number corresponds to thier log (they issue the modems in order to keep tabs on MAC addresses). They also confirmed that I would not be able to ping with the wrong MAC address, I can ping IP and WWW addresses.

I'm going to try Quay computors at lunchtime to see if they have any cable/dsl router devices available.  Dick Smith only have ADSL which I am told are unsuitable for cable modems.
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Author Comment

by:DavidBurchett
ID: 9939148
Just got back from the PC store and they have recomended a NETGEAR RP614 Router with a 4 port 10/100 Mbps switch. http://www.netgear.com/products/prod_details.asp?prodID=131

Do you think it will do the job?

Now that I have a static IP address I will at some stage, set up web access to outlook, host our own site and set up a VPN.

Do you see any problems lurking if I end up installaing the RP614 Router?
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Expert Comment

by:drev001
ID: 9944327
That looks like it'll do the job. There should be no problems with hosting services behind the router. All routers these days have the facility to forward incoming traffic to specific internal hosts based on the tcp/udp port. So if you want to use Outlook web access, you'd forward tcp port 80 traffic to your server's ip address.
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Author Comment

by:DavidBurchett
ID: 9944450
OK, thanks for that I'll go with the router method.

It would be nice to figure why the cable modem won't work with the existing set up though, especially as the dial up is now working (thanks to your help!).  Would you be happy to continue with the question (even though the router option has really answered it) or is that pushing the rules?
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Expert Comment

by:drev001
ID: 9944701
There's no problem continuing.

When you run the Internet Connection Wizard, what options are available for accessing the internet and which option are you using? If there's an option to use a direct connection via a second network card, use this instead of anything to do with dialup.
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Author Comment

by:DavidBurchett
ID: 9945825
I'l check tonight and get back to you on the 5 or 6 options availabale but I have been using the Broadband (permanant connection) option for setting up the cable modem and Dial Up for the old 56K modem.
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Author Comment

by:DavidBurchett
ID: 9948907
ICW has only three connection options available:

1. Modem or Terminal Adaptor
2. Router
3. Full Time Broadband

No1 (my old 56K dial up) works and I've tried No2 and 3 with the cable modem without success
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Expert Comment

by:drev001
ID: 9968307
It's possible that the ICW is not being 100% efficient in removing the settings for the 56k modem. Have a look at he settings within the ISA Server config, under the netork configuration and make sure the references to the modem are not still there. It should be configured to use a direct connection the internet.
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Author Comment

by:DavidBurchett
ID: 9968767
Could not find any referance to the old modem under ISA Network so I ran ICW again to see if that would overide any old settings using the Full Time Broadband option.

No go initially but as soon as I deselected "Automatically Detect Settings" and "Use Proxy Server" in the LAN section on the connections tab of IE6's Internet Options menu item I got access to web pages.

This is only on the server at this stage, no web or email getting through to the clients.

Do I need to set up ISA and Exchange differently for the cable modem than they were for the dial up?

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Author Comment

by:DavidBurchett
ID: 9969082
I checked my Paradise webmail interface and found mail waiting for me, waited for about 20 minutes refreshed the browser and found that it had been picked up so assume that part of exchange is working.  The mail has not been delivered to the internal network clients though.
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Author Comment

by:DavidBurchett
ID: 9970512
I wonder if this has anything to do with the Local Address Table under Network Configuration in ISA?

I have taken a screenshot of the contents of the table and poped it on our website at http://www.burchettfamily.com/Screenshots. The table lists all our internal IP ranges but no ref to the fixed IP address 203.79.67.192 that Paradise assigned for the new cable modem?

Also placed a shot of the ISA monitoring alerts as there are errors there that appear to be related to the problem.

I have also checked the contents of the mailbox section of the First Storage Group of Exchange and found that, while email messages are presumably getting picked up from Paradise by exchange, they are not appearing in the mailbox store (or any of the Outlook clients)?
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Expert Comment

by:drev001
ID: 9980921
The LAT looks fine, you're using the standard SBS ip addressing scheme of 192.168.16.x and this is permitted.

Looking at the errors you have, I think Routing and Remote access may be conflicting with your ISA settings. It looks like there may be a demand-dial interface setup in RRAS for the modem. The best way to eliminate RRAS is to open up the Routing and Remote Access console from Administrative Tools and disable it completely. Do this by right clicking on the server and select Disable RRAS or similar. Then rerun the ICW and see what happens.
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Author Comment

by:DavidBurchett
ID: 9984961
I removed ISA over the weekend and following a re:install got internet and outgoing email back, just need to get incoming email going and we're there !
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Author Comment

by:DavidBurchett
ID: 9990726
Still no luck with incoming email, have checked my POP3 Packet Filters and Connector settings and can't see anything obviously wrong, I've posted up some screenshots at http://www.burchettfamily.com/Screenshots

Have also posted up the Router settings as I couldn't see any mention of RRAS under Routing in the Network Configuration of ISA Server. The re:install of ISA seemed to have cleared out the last of the old Dial Up settings though... the modem has stopped trying to dial out whenever we access the internet so assume that's a good sign!

Have also removed the USB drivers that Paradise installed when they made the original connection to the cable modem. I only had one NIC at the time so they tried going in through a USB port and for some reason the uninstall routine of the software that came with the modem left the USB resource in the system.  It was hidden but retained the same fixed IP address and was causing occasional USB/NIC conflict messages. The uninstall Hardware wizard found them after I checked the "show Hidden Devices" box.

Not sure where to go from here really, running out of ideas!
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Author Comment

by:DavidBurchett
ID: 10007337
I think I have two seperate but possibly related problems with incoming email:


No 1. May relate to http://support.microsoft.com/default.aspx?scid=kb;en-us;279999

Following the re install of ISA and Exchange... when I open the POP3 connector and click the "retrieve" button on the connect and Download Tab of the POP3 Connector I occasionally get an "Initialisation Error" message.  I clicked the "Router Trigger" button on the Connect and Download Tab of the POP3 Connector as suggested in the MS article but found no entries or Ping commands.

This error only seems to occur when the POP3 Connector is "Stopping" and then, only when it is taking an unusually long time to do so.  When in this condition the POP3 Connector will not download mail from the ISP but once it has finally stopped and I click the Retrieve Mail button the mail is picked up. The mail is not delivered to the clients though and I think that is a seperate problem (See No 2 below).


No 2. May relate to http://support.microsoft.com/default.aspx?scid=kb;en-us;324236

I understand that the POP3 Connector is responsible for picking up mail from the ISP and delivering it to the correct Outlook Client User through the map in the User Mailboxes Tab on the POP3 Connector.  I have checked the settings and they appear to be unchanged from what they were previous to this problem occuring.

I have also checked that the appropriate services are running and permissions set as indicated in the MS article but I still have mail in the "Inforward Folder" and on checking the mail in Notepad can confirm that they are the same messages that were previously waiting for the Connector to download.  I have also moved all the messages in the "C:\Program Files\Microsoft BackOffice\Connectivity\POP3 Connector\InForward Folder" to a new folder at C:\InForward as a check for corrupt files but that did not seem to help.
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Expert Comment

by:drev001
ID: 10012517
So it's just POP3 causing a problem. To rule out the POP3 connector, do a basic telnet test:

Start | Run, type telnet pop3server 110 <ENTER>
user yourusername <ENTER>
pass yourpassword <ENTER>
list <ENTER>

If this works, the problem is with the POP3 connector itself. Give it a go and see what happens.
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Author Comment

by:DavidBurchett
ID: 10013384
Yes I'm sure one of the problems is the POP3 connector, I have tried telnetting and can establish a connection, the results are:

+OK <30827.1072737394@pop3-3.paradise.net.nz>
+OK
+OK
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Expert Comment

by:drev001
ID: 10013462
Yep, that confirms it. Next thing to do is increase the diagnostic logging level on the POP3 connector. Go into the properties of the POP3 connector, Diagnostic Logging and set the logging level to Maximum on all items. Check the Event Viewer for any new events.
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Author Comment

by:DavidBurchett
ID: 10013587
I changed the logging level to maximum a couple of days ago after reading one of the MS Kb articles but could not see any ref to the change in the event viewer.  Actually I'm way out of my depth here having no clues what to look for anyway!

I have posted a screenshot at http://www.burchettfamily.com/Screenshots if it helps.
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Expert Comment

by:drev001
ID: 10017882
The POP3 connector logs events in the Application Log. Have a look in there check the events.
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Author Comment

by:DavidBurchett
ID: 10019035
There were close to 2000 events in the application log and they would not display, tried filtering to only show a few but that did not work so I saved the log and cleared it out.

I have added a screenshot of the events in the last hour at http://homepages.paradise.net.nz/~david_b/Screenshots/Event_Viewer_Settings.html

Hope that make sense, I can't make head nor tail of what it all means!
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Author Comment

by:DavidBurchett
ID: 10206560
Hi, Just back from holiday, hope you had a good break :-)

Looking at the codes (see screenshot link above) I checked out the MS site to see if I could find something under the 4020 and 4032 events

I found an article at http://support.microsoft.com/default.aspx?scid=kb;en-us;268643 that talks about the internet mail service not starting due to the Server running Winsock Proxy Client but I don't think this is the case as the email works fine on the old dial up system.

The other find is at http://support.microsoft.com/default.aspx?scid=kb;en-us;255125 but that seems to deal with email that the server can't deliver to it's local clients.  In my case the server is unable to retrieve email from the ISP server.

At this point any/all suggestions are welcomed :-)
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Author Comment

by:DavidBurchett
ID: 10319730
Gave up with the event logs, can't find an article that matches this problem so have had a look around the MS site to see what help is available.

I checked out the following articles and did what they suggested but to no avail
 
274539 - SBS XIMS: POP3 Gateway Mail Disappears After Download
303741 - Users May Not Receive Messages from Connector for POP3 Mailboxes
324236 - The POP3 Connector May Stop Delivering Mail

Just to recap - I have inbound mail stuck in the InForward folder at C:\Program Files\Microsoft BackOffice\Connectivity\POP3 Connector\InForward that is not getting sent on to the outlook 2000 clients. I can send and recieve email internally without any problems and can also send email externally.

Any ideas or should I just reinstall exchange and hope that it overwrites the setting that's causing the problem?
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Expert Comment

by:drev001
ID: 10326142
First, make sure that mail can be accepted by normal means (not coming in from the POP3 connector or internal mail) To do this, telnet into the server and send a test to your email address:

telnet servername 25
helo
mail from: outsideaddress@outsidedomain.com
rcpt to: your email address
data
subject: test message
test
.
quit

I think reinstalling Exchange is a bit drastic. It's possible to remove and reinstall just the POP3 connector by running the Exchange setup. Try this before reinstalling exchange.

Have you rebooted the server recently? It's the kind of thing that a reboot may fix.

Let me know the outcome of the first test before you reinstall anything.
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Author Comment

by:DavidBurchett
ID: 10329668
I have sent a telnet message set out exactly as below and can see it on the paradise webmail page.
(I don't have a problem with outgoing mail it's the incoming that is stuck in the InForward folder that is the problem)
I will leave it for a while before I click the "retrieve now" button on the pop3 connector to bring it in to my server and get back to you with the results.

telnet pop3.paradise.net.nz 25
helo
mail from: david.burchett@parliament.govt.nz
rcpt to: david_b@paradise.net.nz
data
subject: test message
test
.
quit

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Author Comment

by:DavidBurchett
ID: 10331340
The test email came down to the server along with my regular external email but is stuck in the InForward folder along with the others.

The pop3 connector retrieved the email without any user intervention as I had previously it set to do so every 15mins on the schedule tab.

The email address above (david_b@paradise.net.nz) is mapped to my own Win2K profile on the "User Mailboxes" tab.

I checked that there was a valid SMTP email adress in the email tab of the profile dialog as one of the MS articles pointed out previously.

I rebooted the server as suggested but has had no effect.
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Expert Comment

by:drev001
ID: 10335856
I didn't mean telnet into the paradise server, I meant YOUR server. This will test that mail can be delivered by means other than through the pop3 connector.
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Author Comment

by:DavidBurchett
ID: 10336717
I didn't know I could do that with a "local" server, the servername is server.burchettfamily.local.

Our fully qualified domain (burchettfamily.com) is hosted on one of the servers at www.namezero.com with email forwarded to matching individual mailboxes at paradise.  So david@burchettfamily.com gets forwarded to david_b@paradise.net.nz these are then mapped to our individual email addresses on our internal server via the pop3 connector.

I know this is a long winded way to go about it but I have not yet set up our server as a web or email server as we only recently got a static IP address with the cable modem. I eventually want to do this but thought it best to get this problem out of the way first.

Should I abandon this and get straigt into configuing our server for the web?  
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Expert Comment

by:chuckgogo
ID: 10657945

You may not be able to establish a connection to the Exchange 2000 Server Simple Mail Transfer Protocol (SMTP) service. Also, you may experience mail-flow problems with the server.  ie mail stuck in the InForward folder

http://support.microsoft.com/default.aspx?scid=kb;en-us;319880
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Author Comment

by:DavidBurchett
ID: 10664521
Thanks for that but I ended up re installing exchange and all is now working as it should be.
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ID: 10850512
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