mod_dontdothat is an Apache module that allows you to block specific types of Subversion requests. Specifically, it's designed to keep users from doing things that are particularly hard on the server, like checking out the root of the tree, or the tags or branches directories. It works by sticking an input filter in front of all REPORT requests and looking for dangerous types of requests. If it finds any, it returns a 403 Forbidden error. You can compile and install it via apxs: $ apxs -c \ -I$PREFIX/include/subversion-1 \ -L$PREFIX/lib -lsvn_subr-1 mod_dontdothat.c $ apxs -i -n dontdothat mod_dontdothat.la It is enabled via single httpd.conf directive, DontDoThatConfigFile: DAV svn SVNParentPath /path/to/repositories DontDoThatConfigFile /path/to/config.file The file you give to DontDoThatConfigFile is a Subversion configuration file that contains the following sections. [recursive-actions] /*/trunk = allow / = deny /* = deny /*/tags = deny /*/branches = deny /*/* = deny /*/*/tags = deny /*/*/branches = deny As you might guess, this defines a set of patterns that control what the user is not allowed to do. Anything with a 'deny' after it is denied, and as a fallback mechanism anything with an 'allow' after it is special cased to be allowed, even if it matches something that is denied. Note that the wildcard portions of a rule only swallow a single directory, so /* will match /foo, but not /foo/bar. They also must be at the end of a directory segment, so /foo* or /* are valid, but /*foo is not. These rules are applied to any recursive action, which basically means any Subversion command that goes through the update-report, like update, diff, checkout, merge, etc.