Login properties define values used when logging in to a server. Login properties include CS_USERNAME, CS_PASSWORD, and CS_PACKETSIZE.
A server changes the values of some login properties during the login process. For example, if an application sets CS_PACKETSIZE to 2048 bytes and then logs in to a server that cannot support this packet size, the server overwrites 2048 with a packet size it can support. These property types are called negotiated properties.
