Now we can STOP Instanse Messangers Using Layer-7 Filtering. You Require Mikrotik Router OS V3.x
In This Topic We will Try to STOP some known Messangers Like YM, MSN,MIRC etc
First you need to Configure Layer-7 protocols
# jul/29/2008 19:13:33 by RouterOS 3.10
# software id = RG87-8FT
#
/ip firewall layer7-protocol
add comment=”” name=yahoo regexp=”^(ymsg|ypns|yhoo).\?.\?.\?.\?.\?.\?.\?[lwt].*\\xc0\\x80″
add comment=”” name=msn regexp=\
“ver [0-9]+ msnp[1-9][0-9]\? [\\x09-\\x0d -~]*cvr0\\x0d\\x0a\$|usr 1 [!-~]+ [0-9. ]+\\x0d\\x0a\$|ans 1 [!-~]+ [0-9. ]+\\x0d\\x0a\$”
add comment=”” name=irc regexp=”^(nick[\\x09-\\x0d -~]*user[\\x09-\\x0d -~]*:|user[\\x09-\\x0d -~]*:[\\x02-\\x0d -~]*nick[\\x09-\\x0d -~]*\\x0d\\x0a)”
add comment=”” name=AIM regexp=”^(\\*[\\x01\\x02].*\\x03\\x0b|\\*\\x01.\?.\?.\?.\?\\x01)|flapon|toc_signon.*0x”
add comment=”” name=Skype-to-Phone regexp=”^(\\x01.\?.\?.\?.\?.\?.\?.\?.\?\\x01|\\x02.\?.\?.\?.\?.\?.\?.\?.\?\\x02|\\x03.\?.\?.\?.\?.\?.\?.\?.\?\\x03|\\x04.\?\
.\?.\?.\?.\?.\?.\?.\?\\x04|\\x05.\?.\?.\?.\?.\?.\?.\?.\?\\x05|\\x06.\?.\?.\?.\?.\?.\?.\?.\?\\x06|\\x07.\?.\?.\?.\?.\?.\?.\?.\?\\x07|\\x08.\?.\?.\?.\?.\?.\
\?.\?.\?\\x08|\\x09.\?.\?.\?.\?.\?.\?.\?.\?\\x09|\\x0a.\?.\?.\?.\?.\?.\?.\?.\?\\x0a|\\x0b.\?.\?.\?.\?.\?.\?.\?.\?\\x0b|\\x0c.\?.\?.\?.\?.\?.\?.\?.\?\\x0c|\
\\x0d.\?.\?.\?.\?.\?.\?.\?.\?\\x0d|\\x0e.\?.\?.\?.\?.\?.\?.\?.\?\\x0e|\\x0f.\?.\?.\?.\?.\?.\?.\?.\?\\x0f|\\x10.\?.\?.\?.\?.\?.\?.\?.\?\\x10|\\x11.\?.\?.\?\
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|\\x23.\?.\?.\?.\?.\?.\?.\?.\?\\x23|\\\$.\?.\?.\?.\?.\?.\?.\?.\?\\\$|\\x25.\?.\?.\?.\?.\?.\?.\?.\?\\x25|\\x26.\?.\?.\?.\?.\?.\?.\?.\?\\x26|\\x27.\?.\?.\?.\
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\\x46|\\x47.\?.\?.\?.\?.\?.\?.\?.\?\\x47|\\x48.\?.\?.\?.\?.\?.\?.\?.\?\\x48|\\x49.\?.\?.\?.\?.\?.\?.\?.\?\\x49|\\x4a.\?.\?.\?.\?.\?.\?.\?.\?\\x4a|\\x4b.\?\
.\?.\?.\?.\?.\?.\?.\?\\x4b|\\x4c.\?.\?.\?.\?.\?.\?.\?.\?\\x4c|\\x4d.\?.\?.\?.\?.\?.\?.\?.\?\\x4d|\\x4e.\?.\?.\?.\?.\?.\?.\?.\?\\x4e|\\x4f.\?.\?.\?.\?.\?.\
\?.\?.\?\\x4f|\\x50.\?.\?.\?.\?.\?.\?.\?.\?\\x50|\\x51.\?.\?.\?.\?.\?.\?.\?.\?\\x51|\\x52.\?.\?.\?.\?.\?.\?.\?.\?\\x52|\\x53.\?.\?.\?.\?.\?.\?.\?.\?\\x53|\
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|\\].\?.\?.\?.\?.\?.\?.\?.\?\\]|\\^.\?.\?.\?.\?.\?.\?.\?.\?\\^|\\x5f.\?.\?.\?.\?.\?.\?.\?.\?\\x5f|\\x60.\?.\?.\?.\?.\?.\?.\?.\?\\x60|\\x61.\?.\?.\?.\?.\?.\
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.\?.\?.\?.\?.\?.\?.\?.\?\\||\\}.\?.\?.\?.\?.\?.\?.\?.\?\\}|\\x7e.\?.\?.\?.\?.\?.\?.\?.\?\\x7e|\\x7f.\?.\?.\?.\?.\?.\?.\?.\?\\x7f|\\x80.\?.\?.\?.\?.\?.\?.\
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.\?.\?.\?.\?.\?\\xb5|\\xb6.\?.\?.\?.\?.\?.\?.\?.\?\\xb6|\\xb7.\?.\?.\?.\?.\?.\?.\?.\?\\xb7|\\xb8.\?.\?.\?.\?.\?.\?.\?.\?\\xb8|\\xb9.\?.\?.\?.\?.\?.\?.\?.\
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.\?.\?.\?\\xc2|\\xc3.\?.\?.\?.\?.\?.\?.\?.\?\\xc3|\\xc4.\?.\?.\?.\?.\?.\?.\?.\?\\xc4|\\xc5.\?.\?.\?.\?.\?.\?.\?.\?\\xc5|\\xc6.\?.\?.\?.\?.\?.\?.\?.\?\\xc6\
|\\xc7.\?.\?.\?.\?.\?.\?.\?.\?\\xc7|\\xc8.\?.\?.\?.\?.\?.\?.\?.\?\\xc8|\\xc9.\?.\?.\?.\?.\?.\?.\?.\?\\xc9|\\xca.\?.\?.\?.\?.\?.\?.\?.\?\\xca|\\xcb.\?.\?.\
\?.\?.\?.\?.\?.\?\\xcb|\\xcc.\?.\?.\?.\?.\?.\?.\?.\?\\xcc|\\xcd.\?.\?.\?.\?.\?.\?.\?.\?\\xcd|\\xce.\?.\?.\?.\?.\?.\?.\?.\?\\xce|\\xcf.\?.\?.\?.\?.\?.\?.\?\
.\?\\xcf|\\xd0.\?.\?.\?.\?.\?.\?.\?.\?\\xd0|\\xd1.\?.\?.\?.\?.\?.\?.\?.\?\\xd1|\\xd2.\?.\?.\?.\?.\?.\?.\?.\?\\xd2|\\xd3.\?.\?.\?.\?.\?.\?.\?.\?\\xd3|\\xd4\
.\?.\?.\?.\?.\?.\?.\?.\?\\xd4|\\xd5.\?.\?.\?.\?.\?.\?.\?.\?\\xd5|\\xd6.\?.\?.\?.\?.\?.\?.\?.\?\\xd6|\\xd7.\?.\?.\?.\?.\?.\?.\?.\?\\xd7|\\xd8.\?.\?.\?.\?.\
\?.\?.\?.\?\\xd8|\\xd9.\?.\?.\?.\?.\?.\?.\?.\?\\xd9|\\xda.\?.\?.\?.\?.\?.\?.\?.\?\\xda|\\xdb.\?.\?.\?.\?.\?.\?.\?.\?\\xdb|\\xdc.\?.\?.\?.\?.\?.\?.\?.\?\\x\
dc|\\xdd.\?.\?.\?.\?.\?.\?.\?.\?\\xdd|\\xde.\?.\?.\?.\?.\?.\?.\?.\?\\xde|\\xdf.\?.\?.\?.\?.\?.\?.\?.\?\\xdf|\\xe0.\?.\?.\?.\?.\?.\?.\?.\?\\xe0|\\xe1.\?.\?\
.\?.\?.\?.\?.\?.\?\\xe1|\\xe2.\?.\?.\?.\?.\?.\?.\?.\?\\xe2|\\xe3.\?.\?.\?.\?.\?.\?.\?.\?\\xe3|\\xe4.\?.\?.\?.\?.\?.\?.\?.\?\\xe4|\\xe5.\?.\?.\?.\?.\?.\?.\
\?.\?\\xe5|\\xe6.\?.\?.\?.\?.\?.\?.\?.\?\\xe6|\\xe7.\?.\?.\?.\?.\?.\?.\?.\?\\xe7|\\xe8.\?.\?.\?.\?.\?.\?.\?.\?\\xe8|\\xe9.\?.\?.\?.\?.\?.\?.\?.\?\\xe9|\\x\
ea.\?.\?.\?.\?.\?.\?.\?.\?\\xea|\\xeb.\?.\?.\?.\?.\?.\?.\?.\?\\xeb|\\xec.\?.\?.\?.\?.\?.\?.\?.\?\\xec|\\xed.\?.\?.\?.\?.\?.\?.\?.\?\\xed|\\xee.\?.\?.\?.\?\
.\?.\?.\?.\?\\xee|\\xef.\?.\?.\?.\?.\?.\?.\?.\?\\xef|\\xf0.\?.\?.\?.\?.\?.\?.\?.\?\\xf0|\\xf1.\?.\?.\?.\?.\?.\?.\?.\?\\xf1|\\xf2.\?.\?.\?.\?.\?.\?.\?.\?\\\
xf2|\\xf3.\?.\?.\?.\?.\?.\?.\?.\?\\xf3|\\xf4.\?.\?.\?.\?.\?.\?.\?.\?\\xf4|\\xf5.\?.\?.\?.\?.\?.\?.\?.\?\\xf5|\\xf6.\?.\?.\?.\?.\?.\?.\?.\?\\xf6|\\xf7.\?.\
\?.\?.\?.\?.\?.\?.\?\\xf7|\\xf8.\?.\?.\?.\?.\?.\?.\?.\?\\xf8|\\xf9.\?.\?.\?.\?.\?.\?.\?.\?\\xf9|\\xfa.\?.\?.\?.\?.\?.\?.\?.\?\\xfa|\\xfb.\?.\?.\?.\?.\?.\?\
.\?.\?\\xfb|\\xfc.\?.\?.\?.\?.\?.\?.\?.\?\\xfc|\\xfd.\?.\?.\?.\?.\?.\?.\?.\?\\xfd|\\xfe.\?.\?.\?.\?.\?.\?.\?.\?\\xfe|\\xff.\?.\?.\?.\?.\?.\?.\?.\?\\xff)”
add comment=”” name=Skype regexp=”^..\\x02\85\85\85\85.”
add comment=”” name=”MSN FT” regexp=”^(ver [ -~]*msnftp\\x0d\\x0aver msnftp\\x0d\\x0ausr|method msnmsgr:)”
/ip firewall address-list
add address=10.10.11.240/28 comment=”” disabled=yes list=YM-DENY
add address=10.10.11.244 comment=”” disabled=no list=YM-ALLOW
add address=10.10.11.243 comment=”” disabled=no list=YM-ALLOW
add address=10.10.11.240/28 comment=”” disabled=no list=IRC-DENY
/ip firewall filter
add action=accept chain=forward comment=YM-ALLOW disabled=no layer7-protocol=yahoo src-address-list=YM-ALLOW
add action=accept chain=forward comment=IRC-ALLOW disabled=no layer7-protocol=irc src-address-list=IRC-ALLOW
add action=drop chain=forward comment=IRC-DENY disabled=no layer7-protocol=irc src-address-list=IRC-DENY
add action=accept chain=forward comment=AIM-ALLOW disabled=no layer7-protocol=AIM src-address-list=AIM-ALLOW
add action=drop chain=forward comment=AIM-DENY disabled=no layer7-protocol=AIM src-address-list=AIM-DENY
add action=drop chain=forward comment=YM-DENY disabled=no layer7-protocol=yahoo src-address-list=YM-DENY
TXT 