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Many reports predicted that the number of connected IoT (Internet of Things) devices will reach to billions in the next several years, accordingly, how to securely and effectively manage, monitor and control them becomes a critical problem. In conventional IoT solutions, direct SSL/TLS based HTTP connections to IoT devices with high overhead are required and encryption is not considered due to low...
According to the Domain Name Industry Brief 2015 by VeriSign, the amount of domain names has reached to 296 million across all top-level domains (TLDs) with increase of 5.9 percent year over year. Considering each domain name may have at least one resource record requiring multi-step name resolution such as MX (Mail eXchange), CNAME (Canonical Name) and SRV (Service), etc. the DNS traffic and name...
Recent reports on Internet security have indicated that the DNS (Domain Name System) protocol is being used for botnet communication in various botnets; in particular, botnet communication based on DNS TXT record type has been observed as a new technique in some botnet-based cyber attacks. One of the most fundamental Internet protocols, the DNS protocol is used for basic name resolution as well as...
Domain Name System (DNS) is the most widely used name resolution system for computers and services in the Internet. The number of domain name registrations is reaching 276 million across all top level domains (TLDs) today and the DNS query count is increasing year over year. The main reason of the high DNS query count is the increase of out-of-bailiwick domain name delegation since it (NS without...
To combat with botnet, early detection of the botnet communication and fast identification of the bot-infected PCs is very important for network administrators. However, in DNS protocol, which appears to have been used for botnet communication recently, it is difficult to differentiate the ordinary domain name resolution and suspicious communication. Our key idea is that the most of domain name resolutions...
The attempts of malicious access and attacks from the Internet to the internal computers of organizations never stop today and corresponding countermeasure for each technique is required. Most organizations introduce some firewall facilities as one of the solutions to protect their internal computers as well networks from those attacks. However, in most organizations, the network administrator has...
As an important infrastructure of the current Internet, the Domain Name System (DNS) universally supports most of Internet applications. The DNS is established on top of Internet Protocol (IP) to provide an addressing of Internet resources. However, the IP based current Internet communication model is considered as inappropriate for supporting an explosive increase of Internet devices and contents...
With the popularity of the Internet services, network security becomes critical issue in the Internet world. Especially, the threats of malicious accesses make the firewall systems have to low down performance due to strict inspections. In this paper, we propose an adaptive firewall system in collaboration with DNS (Domain Name System) which introduces querier's IP address notification feature. With...
With the explosive widespread of the Internet, many fundamental and popular Internet services such as WWW and e-mail are becoming more and more important and are indispensable for the human's social activities. As one technique to operate the systems reliably and efficiently, the way of introducing multihomed networks attracts much attention. However, conventional route selection mechanisms on multihomed...
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