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87 (62)caching only server with forwarderA caching only server with a forwarder is a DNS server that will get all its information from the forwarder.
In an interesting turn of events, a C&C used in the Carbanak targeted attack campaign now resolves to an IP linked to the Russian Federal Security Service (FSB). For those who are not familiar, Carbanak is a targeted attack campaign that hit banks and financial organizations earlier this year. Based on reports, it employed methods and techniques such as spear phishing email and exploits, commonly seen in targeted attacks. I checked for other interesting details in the other IOCs but didn’t find anything related to this particular anomaly. Dark Motives Online: Are Cybercriminals and Terrorist Organizations More Similar than We Think? This interactive map shows how diverse the cybercriminal underground economy is, with different markets that are as unique as the country or region that it caters to.
A sophisticated scam has been targeting businesses that work with foreign partners, costing US victims $750M since 2013. The forwarder must be a dns server for example the dns server of an internet service provider.This picture shows a dns server on the company LAN that has set the dns server from their isp as a forwarder. Accordingly, attackers did intelligence gathering about their target networks in order to infiltrate it. I still do not know why it happened; I do not really think that FSB Russia would point the Carbanak-related domain name to an IP address which is affiliated with Russian Federal Security Service. Some zones will contain delegate authority over a child domain to another zone.A dns server can be authoritative over 0, 1 or more dns zones.

To resolve an IP address by reverse lookup (get a computer’s name if you only have its IP address), use this NSLookup tool. Actually dns is much more than that, but let's keep it simple for now.When you use a browser to go to a website, then you type the name of that website in the url bar. We will see more details later on the relation between a dns server and a dns zone.A dns zone consists of records, also called resource records.
Explains how to use reverse nslookup command under UNIX or MS-Windows operating systems to find out an IP address to resolve a hostname or domain name.
But for your computer to actually communicate with the web server hosting said website, your computer needs the ip address of that web server. We will list some of those resource records on the next page.dns recordsA recordThe A record, which is also called a host record contains the ipv4-address of a computer. When a DNS client queries a DNS server for an A record, then the DNS server will resolve the hostname in the query to an ip address. To resolve names, computers had a flat file that contained a table to resolve hostnames to ip addresses. An AAAA record is similar but contains an ipv6 address instead of ipv4.PTR recordA PTR record is the reverse of an A record. It contains the name of a computer and can be used to resolve an ip address to a hostname.NS recordA NS record or nameserver record is a record that points to a DNS name server (in this zone). We will discuss this file later, as it can influence name resolution.forward and reverse lookup queriesThe question a client asks a dns server is called a query.

There is exactly one SOA record for each zone.CNAME recordA CNAME record maps a hostname to a hostname, creating effectively an alias for an existing hostname. The name of the mail server is often aliased to mail or smtp, and the name of a web server to www.MX recordThe MX record points to an smtp server. When you send an email to another domain, then your mail server will need the MX record of the target domain's mail server.caching only serversA dns server that is set up without authority over a zone, but that is connected to other name servers and caches the queries is called a caching only name server. NSLOOKUP or Reverse DNS (rDNS) is a method of resolving an IP address into a domain name, just as the domain name system (DNS) resolves domain names into associated.
Instead they connect to other name servers and cache that information.There are two kinds of caching only name servers.
Those with a forwarder, and those that use the root servers.caching only server without forwarderA caching only server without forwarder will have to get information elsewhere. In the end, our hard working dns server will find an answer and report this back to the client.
It will then contact the .be server and be refered to one of the name servers of Openminds.

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