Hi Guys - I have a stunnel setup in a linux box kernel 2.4 Advanced sever release 2.1AS (pensacola) . I am trying to increase the number of file descriptors with which stunnel could handle. So I did a ulimit -n 4096 for root and restarted the stunnel process. Now in the stunnel logs i see, ..... FD_SETSIZE=1024, file ulimit=4096- > 500 clients allowed. I dont completely understand the relation between FD_SETSIZE and file ulimit. I also read that a single stunnel connection might use around 2 or 3 file descriptors. So what is the cap on the number of file descriptors used by stunnel. To make it use , around 4096 file descriptors should i recompile the stunnel again with FD_SETSIZE set to 4096.? -- ARUN ARUMUGAM Galbraith's Law of Human Nature: Faced with the choice between changing ones' mind and proving that there is no need to do so, almost everybody gets busy on the proof.