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Everything You Need to Know About DNS AttacksIt's important to understand DNS, potential attacks against it, and the tools and techniques required to defend DNS infrastructure. This report answers all the questions you were afraid to ask.
Domain Name Service (DNS) is a critical part of any organization's digital infrastructure, but it's also one of the least understood. DNS is designed to be invisible to business professionals, IT stakeholders, and many security professionals, but DNS's threat surface is large and widely targeted.
Attackers are causing a great deal of damage with an array of attacks such as denial of service, DNS cache poisoning, DNS hijackin, DNS tunneling, and DNS dangling. They are using DNS infrastructure to take control of inbound and outbound communications and preventing users from accessing the applications they are looking for. To stop attacks on DNS, security teams need to shore up the organization's security hygiene around DNS infrastructure, implement controls such as DNSSEC, and monitor DNS traffic
Incident Readiness and Building Response Playbook
In this special report, learn the Xs and Os of any good security incident readiness and response playbook.
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User Rank: Ninja
6/25/2019 | 10:53:56 AM
Write-Host " "
Write-Host "Block Triton ICS Port 39929"
Write-Host "-------------------------------"
$Name = "Triton-ICS-Attack-Port-39929"
$Triton = (Get-NetFirewallRule -DisplayName $Name)
$TPort = (Get-NetFirewallrule -DisplayName $Name | Get-NetFirewallPortFilter).LocalPort
if ( ( ($Triton).DisplayName -eq $Name) -And ($TPort -eq 39929) ) {
Write-Host $Name "exists - ok"
} else {
New-Netfirewallrule -Action Block -Enabled True -Direction Inbound -LocalPort 39929 -RemoteAddress Localsubnet -Name $Name -Profile Any -Protocol TCP -DisplayName $Name -RemotePort Any -Description "Triton-ICS-Attack-Port-39929"
Get-NetFirewallRule -Name $Name
}
Antivirus Entry - Go to antivirus and program the software to look for "imain.bin, inject.bin and trilog.exe". Also, I recommend using Comodo HIDS or other software solutions that initiate system baselines. If the system identifies any changes, then the application would stop the file from executing if it was considered nefarious.
From a linux standpoint:
iptables -I INPUT 1 -p tcp -m multiport --dport 39929 -m conntrack --ctstate NEW,ESTABLISHED -j DROP (iptables FW that tracks and Drops the port)
or
ufw allow in proto tcp from 0.0.0.0/0 to 0.0.0.0 port 39929 comment "Triton Blocked Port" (UFW Firewall Entry)
Download chkrootkit and/or rkhunter on the Linux/Unix machines to help find this potential problem.
Todd S,
Enterprise Architect
https://itotsnetworks.com