The Appleshare compatibility page that Equill mentions says some things that are not crystal clear. For example, I have an 030 SE/30 running System 7.5.5. I read through that information with that in mind. But the "Support Platforms" section at the top says "AppleShare 3.0.1" is for 68000~68030 computers running System 7.0~7.5.1. Moving down one row says "AppleShare 4.0" but that "All users should update to AppleShare 4.0.1." Okay... Move down another row to that version. The comment on 4.0.1 only says compatibility with 040 computers which implies no compatibility with my 030 SE/30. Hmmm. Now skip down to the "Supported Mac OS Releases" table. I am running 7.5.5, so I scroll my eyes down to the AppleShare 4.2.1 section. Now scroll back up to the "Supported Platforms" table and note the lack of mention for 030 processors, but a specific mention of PPC and incompatibility for the 68000.
So this AppleShare info page seems to say that if you're running 7.5.5 you need AppleShare 4.2.1, but it does not enlighten SE/30 owners about compatibility for their machine when running System 7.5.5.
Cut through all the confusing compatibility info and get your 030 SE/30 running System 7.5.5 (and 7.6.1 and 8.1, if you have the appropriate ROM) by using OT 1.3 and AppleShare extension version 3.7.4 and applying the TCPQuantum fix on the Tiger Mac. (Again, this may work on Leopard, but I've not personally tried it.) I talk about this in detail on this Vintage Macs post.
And yes, I did at one time use "ShareWAY IP" (not "shareware IP") on my SE/30, but I no longer need that. Indeed, I find this new implementation to be better than ShareWay IP. Again, read through the posts in that Vintage Macs thread. The TCPQuantum fix (on the OS X Mac) is really a fix when used in conjunction with the appropriate AppleShare extension version. You can then use the Chooser to mount OS 10.4.11 drives just fine.
(And as I wrote in my final post in that Vintage Macs thread, if anyone has the means of linking to a Tiger Mac via the Chooser on System 7.1, I'd like to hear about. Ditto for a method of doing the same under System 6.0.8. I can get System 6 to link to my G4 Cube just fine, but only when I boot the Cube into OS 9.)
So this AppleShare info page seems to say that if you're running 7.5.5 you need AppleShare 4.2.1, but it does not enlighten SE/30 owners about compatibility for their machine when running System 7.5.5.
Cut through all the confusing compatibility info and get your 030 SE/30 running System 7.5.5 (and 7.6.1 and 8.1, if you have the appropriate ROM) by using OT 1.3 and AppleShare extension version 3.7.4 and applying the TCPQuantum fix on the Tiger Mac. (Again, this may work on Leopard, but I've not personally tried it.) I talk about this in detail on this Vintage Macs post.
And yes, I did at one time use "ShareWAY IP" (not "shareware IP") on my SE/30, but I no longer need that. Indeed, I find this new implementation to be better than ShareWay IP. Again, read through the posts in that Vintage Macs thread. The TCPQuantum fix (on the OS X Mac) is really a fix when used in conjunction with the appropriate AppleShare extension version. You can then use the Chooser to mount OS 10.4.11 drives just fine.
(And as I wrote in my final post in that Vintage Macs thread, if anyone has the means of linking to a Tiger Mac via the Chooser on System 7.1, I'd like to hear about. Ditto for a method of doing the same under System 6.0.8. I can get System 6 to link to my G4 Cube just fine, but only when I boot the Cube into OS 9.)