These servers may or may not violate QL terms of service. Read the quakelive.com terms of use very carefully before advertising a server.

This contract binds any registered user to agree to monetary compensation for any violation of the terms, and grants id total discretionary authority over user accounts.

This contract is between a user and quakelive.com, not between a non-user and quakelive.com.

I am unaware of any patent or protection id has against reverse engineering QL communications protocols and encryption methods other than the quakelive.com terms of use. If somebody has a real understanding of these points, elaboration would be beneficial to the community.

The internet has changed drastically in a very short time. Reckless disregard for caution, especially in the face of such a stern contract as required to use quakelive.com, can have seriously negative consequences.

That is all.