[ksherlock]

    alias sandbox-no-network='sandbox-exec -p "(version 1)(allow default)(deny network*)"'

pro-tip on alias:

for sh-compliant shells, including a whitespace at the end of the alias string causes the next token to also go through alias expansion. (maybe it would also be a hint to the shell for tab completion as well). This is a perfect example of when, where, and why you would want to do that.