RegEx to prohibit some special characters -

what proper regular expression exclude or prohibit

< > * % : & \

i trying

^[^<>*%:&\\]$

but not seem work. please help, thanks.

it correct single characters. if want validate longer strings,

^[^<>*%:&\\]*$ 

if empty strings okay, or if not,

^[^<>*%:&\\]+$