alert http any any -> $HOME_NET any (msg:"ET EXPLOIT TP-LINK TL-WR841N Router DNS Change GET Request"; flow:to_server,established; http.method; content:"GET"; http.uri; content:"/userRpm/LanDhcpServerRpm.htm?"; fast_pattern; content:"dhcpserver=1"; content:"&dnsserver="; content:"&Save="; reference:url,www.exploit-db.com/exploits/34584; classtype:attempted-admin; sid:2020878; rev:4; metadata:created_at 2015_04_09, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_05_21;)