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Our previous document described the NAT behavior discovery algorithms defined in RFC 3489. This document will explain what algorithms for discovering NAT behaviors are defined in RFC 5780. Again, to fully understand what's discussed below, we recommend you read the following posts first: 1. NAT Behavioral Requirements, as Defined by the IETF (RFC 4787) - Part 1. Mapping Behavior 2....
11/18/2013
37,540
NAT Behavioral Requirements, as Defined by the IETF (RFC 4787) Part 1. Mapping Behavior Part 2. Filtering Behavior Part 3. Deterministic Properties Many applications like Skype, online games, etc. are all Peer-to-Peer (P2P) applications based on UDP. When running these applications, two devices communicate with each other without a...
09/12/2013
34,893
Let us introduce the NAT behavior discovery algorithms defined in RFC 3489. To fully understand what's discussed below, we recommend you read the following posts first: 1. NAT Behavioral Requirements, as Defined by the IETF (RFC 4787) - Part 1. Mapping Behavior 2. NAT Behavioral Requirements, as Defined by the IETF (RFC 4787) - Part 2. Filtering Behavior 3. STUN (RFC 3489) vs. STUN (R...
11/04/2013
42,059
Today, NATs are employed by Korean telecom operators in almost all of their access networks except for wired access networks (FTTH, Ethernet, DSL, etc.). 3G/LTE network: Large Scale NAT (LSN) installed beyond GGSN/P-GW in the 3G/LTE core networks. Also called "Carrier Grade NAT (CGN)". Wi-Fi Hotspot network: NAT implemented in Wi-Fi hotspot AP. Residential network: NAT implemented in su...
09/03/2013
32,476
NAT Behavioral Requirements, as Defined by the IETF (RFC 4787) Part 1. Mapping Behavior Part 2. Filtering Behavior Part 3. Deterministic Properties This is the last post on RFC 4787. 4. Application Level Gateway For information about Application Level Gateways (ALGs), please click here....
10/10/2013
31,945
What are the differences between NAT types defined in RFC 3489 and RFC 5780? To understand the differences to be explained below, you must be familiar with the Mapping Behavior and Filtering Behavior of a NAT that we covered last time. What is STUN? STUN is a protocol that allows two devices (P2P devices) to discover the presence and types of a NAT between them, and to find out what Exte...
10/21/2013
45,348
NAT Behavioral Requirements, as Defined by the IETF (RFC 4787) Part 1. Mapping Behavior Part 2. Filtering Behavior Part 3. Deterministic Properties Now that we learned a NAT's mapping behaviors last time, below we will study its filtering behaviors as defined in RFC 4787. For information about the terms used below (Internal En...
09/23/2013
32,905
We are pleased to share with you all an interesting article contributed by Zeeshan Rizvi. Zeeshan Rizvi Cloud / DevOps / SDN Strategy at Irsols Inc https://www.linkedin.com/in/zeeshanrizvi All Articles by Zeeshan Rizvi...
03/25/2019
21,404
Ministry of Science, ICT and Future Planning (MSIP), a ministry of the Government of South Korea, is going to collect bandwidth of 800 MHz National Convergence Network (Frequency Common Communication TRS method), which is used by railroads, police departments, and fire departments, by 2018 and use it for mobile communication or IoT. Its goal is to solve increase of communication traffic and...
09/02/2015
6,811
Upon his inauguration in 2014, KT's Chairman Hwang Chang Kyu presented a vision of GiGAtopia where all things and users are connected via GiGA infra and communication and other industries (like healthcare, media and traffic control) can integrated effectively on the infra, serving as a next-generation growth engine. In GiGA infra that will connect everything, the key elements of wired a...
10/05/2016
26,117
Changwon National Industrial Complex in Korea Gyeongnam Techno Park will start building private 5G in Central (CTR), an automobile parts manufacturer, at the end of this month Optimized communication required for smart factory, smart logistics, etc. Gyeongsangnam-do to build 890 smart factories by 2025 Gyeongsangnam-do(province) will begin building private 5G networks in the Changwon Nat...
03/20/2023
1,258
We are pleased to share with you all an interesting article contributed by Dean Bubley who is mobile & telecom sector analyst, expert consultant & conference speaker. Dean Bubley Founder and Director at Disruptive Analysis All Articles by Dean Bubley...
05/31/2017
20,665
According to the recently amended Telecommunication Business Act (Article 56-2), telecommunication service providers now are required to release information needed for their subscribers to select wired and wireless Internet service, including which areas are covered, how service is provided, etc. To comply with the regulation, on the 28th of July, the South Korea’s big 3 operators ha...
08/13/2016
42,166
SK Telecom today held a press conference to announce the completion of the nationwide deployment of Low Power Wide Area Network (LPWAN) based on LoRa technology; the launch of price plans for LoRa-based IoT services; and its plans to vitalize the IoT ecosystem. The company finished building LoRaWAN across the country by end of June, six months earlier than its initial schedule, covering 99...
07/04/2016
10,462
The Ministry of Science, ICT and Future Planning (MSIP) signed a memorandum of understanding (MOU) for information and communication technology (ICT) cooperation with the Ministry of Information and Communication of Vietnam, and hosted meetings to encourage greater cooperation between business from both nations (July 3rd). The latest event was part of efforts to expand ICT cooperation with...
08/18/2015
5,237
We are pleased to share with you all an interesting article contributed by Dean Bubley who is mobile & telecom sector analyst, expert consultant & conference speaker. Dean Bubley Founder and Director at Disruptive Analysis All Articles by Dean Bubley...
01/10/2017
23,659
Earlier this year in May, the South Korean Ministry of Science, ICT, and Future Planning (MSIP) adjusted the maximum transmit power in the 900 MHz unlicensed band from 10 mW to 200 mW, offering frequencies dedicated for wide area IoT purpose. Initially, 6.5 MHz (917 - 923.5 MHz) was offered, and additional 6 MHz (940 - 946 MHz) is scheduled to be offered in the 2nd half of the year. The de...
08/03/2016
27,049
Revenue of KRW 4.267 trillion, operating income of KRW 407.4 billion and net income of KRW 291 billion (K-IFRS consolidated) The revenue increased by 0.3% YoY backed by increased sales of its subsidiaries The operating income edged down by 1.3% compared to the same period last year affected by expanded expenses caused by growth in subsidiaries’ business activities The net income decrea...
07/30/2016
5,767
On June 20th, SK Telecom unveiled its strategies for utilizing the frequencies in 2.6GHz that it acquired at the last auction, and for developing more evolved next-generation network. The company has become an operator with most frequency in 2.6GHz band in the nation after acquiring additional frequency at the auction held earlier this year. Once new network utilizing these wider bandwidth...
06/01/2016
28,376
Samsung Electronics today announced a new contract with SK Telecom to deploy the world’s first commercial Internet of Things (IoT)-dedicated nationwide LoRaWAN network. The network will be deployed across Korea using the 900 MHz frequency band. The commercial service is scheduled to launch in Daegu, Korea’s fourth largest city, next month and will be available nationwide by the mi...
05/24/2016
8,560
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