Name translation monitoring
Systems, methods, and related technologies for analyzing traffic based on naming information are described. In certain aspects, name information and address information from a name translation response are stored. The name information is associated with a device based on the device sending a communication to an address associated with the name information.
1. A method comprising:
accessing network traffic;
accessing name translation traffic from the network traffic;
accessing name information and address information from the name translation traffic;
storing the name and address information;
accessing subsequent network traffic sent by a device, wherein the network traffic includes address information;
determining a match between address information of the subsequent network traffic and the address information of the name translation traffic;
associating network traffic from the device with the name information;
classifying the device based on the name information, wherein classifying the device is based on a subdomain name of the name information; and
assigning a security policy to the classified device, wherein the security policy is assigned based on the classification of the device.
2. The method of claim 1 , wherein the name translation traffic is a domain name system (DNS) response and the address information comprises an internet protocol (IP) address.
3. The method of claim 1 further comprising:
determining a session classification based on the name information.
4. The method of claim 1 further comprising:
determining an indication of compromise (IoC) of the device based on the name information.
5. The method of claim 1 further comprising:
determining an indication of intrusion based on the name information.
6. The method of claim 5 wherein the indication of intrusion is based on a signature.
7. The method of claim 1 , wherein the name translation traffic is accessed from an intermediate naming device.
8. The method of claim 1 further comprising:
accessing time information from the name translation traffic.
9. A system comprising:
a memory; and
a processing device, operatively coupled to the memory, to:
access a domain name system (DNS) response packet, wherein the DNS response packet includes a domain name and an internet protocol (IP) address and wherein the DNS response packet is accessed in response to a reverse DNS request;
access the domain name and the IP address from the DNS response packet;
access a packet comprising the IP address of the DNS response packet, wherein the packet is sent from a device;
classify the device based on the domain name of the DNS response packet;
classify a session associated with the device based on the IP address; and
determine a security characteristic associated with the device based on the classification of the device and the classification of the session, wherein the security characteristic comprises at least one of an indicator of compromise (IoC) or an intrusion indicator based on a signature associated with the domain name of the DNS response packet.
10. The system of claim 9 , wherein the processing device is further to:
access a time to live (TTL) associated with the DNS response packet.