Increase Steam's dedicated server time out timer

My server time out timer is way to short of 60 seconds, other people are constantly timing out, i need it increased idk how to do it, i been searching everywhere for it, idc about optimizing my server i can connect in 20 secs other people can take 2-3 mins to connect, all i want to know is how to increase the timer and thats it, if you dont have that info then dont say anything please.