I was doing some work on an older windows 2000 IIS 5 server, and noticed that IIS lockdown had never been run on it. So I ran IIS lockdown, and the sites on that server seem to be running OK, except for uploading.
The problem seems to be file size. Uploading a 10k file works OK, but trying to upload a 150k file seems to drop the connection. Un-doing the lockdown, the upload works fine.
During the lockdown, I deselected the option to restrict anonymous users for writing to content directories, so thats not the problem. I also did not install URLscan, so thats not the problem either.
The site uses AspSmartUpload for the uploading. There are no server errors, just the connection or network error. Nothing in the event logs either. It seems like IIS lockdown limited the content length allowed in the request, but I didnt think it was supposed to do that.
Ive searched this problem everywhere, but I only find this issue occurring with URLScan installed, but like I said, I did not install it. So any help would be appreciated.