alert udp $EXTERNAL_NET any -> $HOME_NET 111 (msg:"GPL RPC portmap mountd request UDP"; content:"|00 01 86 A0|"; depth:4; offset:12; content:"|00 00 00 03|"; within:4; distance:4; byte_jump:4,4,relative,align; byte_jump:4,4,relative,align; content:"|00 01 86 A5|"; within:4; content:"|00 00 00 00|"; depth:4; offset:4; reference:arachnids,13; classtype:rpc-portmap-decode; sid:2100579; rev:9; metadata:created_at 2010_09_23, signature_severity Informational, updated_at 2019_07_26;)