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Macintosh Routing Problems

By larryrh ·
I have a G3 Mac on the same TCP/IP network, (mostly windows NT) that is working fine. I can use Microsoft Mail Exchange and also use the Proxy server to surf the intranet. Now when I moved the Mac to another subnet, using a NT server as the router, not changing anything on the Mac, the Mac now can not use the proxy to get to the internet. The Mac is using DHCP and has a good address for the new subnet. I have tried using Mac-ping to ping the proxy, I do get a reply. When I use trace route to the proxy it also gets a reply thru the gateway. When using IE4.5 for Mac?s, I get a ?HTTP Error 403?, ?403.6 Forbidden: IP Address Rejected?. The new Mac address of the new subnet is in the "LAT" table on the proxy, also other windows NT pc's on that subnet are all using the proxy server without any problems. I also have modified the host file on the Mac to define the address of the proxy server. The Mac is using os9. As I said works just fine on the same subnet as the proxy server.

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Macintosh Routing Problems

by Gus g In reply to Macintosh Routing Problem ...

Hey there, we had a similar problem at the building with a couple of our macs after moving them to a different office. Our solution was to enter all the tcp/ip information manually. After we did this everything worked fine, good luck.

Gus g

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Macintosh Routing Problems

by larryrh In reply to Macintosh Routing Problem ...

I have tried to add all info manually, static address, router, mask, not using the DHCP, in the TCP/IP setting on the Mac. it does not make any differance. Also edited the Host file on the mac to define the Host name of the proxy server.Still noluck.. I even made all these changes and moved the Mac back on our subnet to make sure it still works, and it still did. Any more ideas? I think the problem is in the Host file but can't find any info about how to enter a routing table on a Mac.

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Macintosh Routing Problems

by dcaratti In reply to Macintosh Routing Problem ...

What version of Mac OS are you using on the G3?

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Macintosh Routing Problems

by larryrh In reply to Macintosh Routing Problem ...

Poster rated this answer

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Macintosh Routing Problems

by dcaratti In reply to Macintosh Routing Problem ...

Sorry, I didn't see that you mentioned that you are using OS 9.

Instead of manually tying in all of the IP info, try inputing only your domain (ie intranet.company.com) in the additional search domains box of the TCP/IP Control Panel. You may have to go to advanced mode to see that box. Advanced mode is activated by selecting Edit - User Mode... click on the Advanced radio button.

I've had to do that with my Macs. It allows them to still receive a DHCP address yet still find the router.
Hope that helps.

Dave

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Macintosh Routing Problems

by larryrh In reply to Macintosh Routing Problem ...

Tried this. But no help either. Added the doman name, the router name, added all the names. there's gotta be a way to make or eddit the routing tables on a Mac to define the route. Even thou using tracert or ping it resolves the address or name through the Hosts file.

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Macintosh Routing Problems

by cuziyq In reply to Macintosh Routing Problem ...

I also have run into a similar problem at my company. Here's what I did to fix it, as unorthodox as it sounds. Disable AppleTalk, get rid of any static hosts files you have, remove all entries from your DNS search order, then disable DHCP. Then Ire-enabled DHCP and AppleTalk, then rebooted. It sounds bass-ackward to do it that way, but ti worked for me. Maybe it'll work for you.

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Macintosh Routing Problems

by larryrh In reply to Macintosh Routing Problem ...

Tried this, didn't help but was a good thought, never know what a clean install of the network does. Have fixed many problems on windows nt doing this. Thanks for the answer.

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Macintosh Routing Problems

by redwards In reply to Macintosh Routing Problem ...

Well, I would suspect that it has something to do with the proxy configuration. You are getting responses back from the proxy server, so you are able to connect to it just fine. You can traceroute and ping it as well.

If I remember correctly, the MAC address does not travel accross routers, and is only used on a local subnet. Therefore your proxy server must have a rule to allow the IP number of the mac on a different subnet, you can't use the MAC address at this point.

If it was a routing issue, you would not be able to ping or tranceroute, and browsers would complain of not finding the computer.

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Macintosh Routing Problems

by larryrh In reply to Macintosh Routing Problem ...

There are Windows Nt pc's using the Proxy server on the same subnet as the Mac that's having the problem. I did hard code the Mac's ip in the proxy's LAT table. or maybe I didn't understand your answer. Thanks

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