Hi all
I have the following ruleset
# File extension filtering.
deny set acl_m1 = ${extract{-1}{.}{${lc:$mime_filename}}}
message = This message contains a prohibited file extension ($acl_m1)
log_message = REJECTED ATTACHMENT ($acl_m1)
condition = ${if match{$acl_m1}{\N^(avi|asf|ade|adp|asx|asp|arj|\
bat|bin|btm|bas|\
cpl|com|cmd|class|cab|chm|crt|\
dll|\
exe|\
gz|\
hta|hlp|html|htm\
js|jse|java|jtd|\
mpeg|mp3|mpg|mda|mdb|mde|mdt|mdw|mdz|msc|msi|msp|mst|\
ole|ocx|oft|ovl|ops|\
prf|plx|pcd|prf|pub|pif|pl|php|pst|\
reg|\
shs|scr|pif|sys|shb|scf|sct|shtml|\
tar|\
rar|\
url|\
vb|vbs|vbe|vxd|vss|vst|vob|\
wav|wsf|wsc|wma|wsh|ws|wsf|pps|ppt|zip\
)$\N}{1}{0}}
Would anyone know how I can get the inverse check of this.
Instead of checking for list of denied mime types, Id rather your like to have a list of accepted mimes types (doc,
xls, pdf, etc), kinda like iptables policy of DROP, and then ACCEPT what you want.
Kind Regards
Brent Clark
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