pico -w /etc/httpd/conf/httpd.conf
locate ExtendedStatus
Make sure ExtendedStatus is on and without the comment at the start
and add this line to every virtual directory you want to limit
or add it once to the main directory to limit all
MaxConnPerIP 3
# exempting images from the connection limit is often a good
# idea if your web page has lots of inline images, since these
# pages often generate a flurry of concurrent image requests
NoIPLimit image/*
MaxConnPerIP 1
# In this case, all MIME types other than audio/mpeg and video*
# are exempt from the limit check
OnlyIPLimit audio/mpeg video
press cntrl O to save
then cntrl X
then service httpd restart
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