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001-es BibID:	BIBFORM046735
Első szerző:	Almási Béla (informatikus, matematikus)
Cím:	Establishing direct connection between two remote wireless clients / Almási Béla
Dátum:	2011
Megjegyzések:	Wireless clients are usually placed into private address realm (private network) in the Internet. The clients in the private address realm are able to communicate to each other in the same private network, and using special boxes (NAT boxes) the clients can also communicate to the public internet. This solution "hides" the wireless clients from the outside public internet world: they are unreachable from the outside world, or from other private networks. In special situations the requirement of the direct connection between two wireless clients (located in different private networks) may occur. One widely used solution for this kind of problem is the special configuration of the NAT boxes (called "port forwarding"), but also there are many cases, where the NAT box configuration is not allowed (e.g. the applied security policy does not allow it).In this paper we would like to introduce a software based solution for the mentioned situation: The solution (named UDPTUN) establishes a direct tunnel connection between two clients located in different private networks (without changing or touching the configuration of the NAT boxes).
Tárgyszavak:	Műszaki tudományok Informatikai tudományok idegen nyelvű folyóiratközlemény külföldi lapban network wireless nat
Megjelenés:	Carpathian Journal of Electronic and Computer Engineering 4 : 1 (2011), p. 1-5. -
Internet cím:	Intézményi repozitóriumban (DEA) tárolt változat
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001-es BibID:	BIBFORM046736
Első szerző:	Almási Béla (informatikus, matematikus)
Cím:	A simple solution for wireless network layer roaming problems / Almási Béla
Dátum:	2012
Megjegyzések:	The trouble-free moving of wireless clients between access points (i.e. "roaming") is a basic requirement in wireless sensor networks (e.g. when the sensor is attached to a moving object). The network layer roaming issues a problem to solve: the IP address is changed during the roaming, so basically it would close all the running communication sessions. The Mobile IP specification offers a solution idea for this problem by keeping the old IP address, and establishing a tunnel between the "old" and the "new" network. In this solution the optimality of the communication is lost: The path between the peers must travel through the "old" network, so the triangle inequality holds.In this paper we introduce a new idea for wireless network layer roaming, which ensures the usage of the optimal path and also guarantees that the network connection will not be lost during the IP address changing.
Tárgyszavak:	Műszaki tudományok Informatikai tudományok idegen nyelvű folyóiratközlemény külföldi lapban wireless network roaming
Megjelenés:	Carpathian Journal of Electronic and Computer Engineering 5 : 1 (2012), p. 5-8. -
Internet cím:	Szerző által megadott URL Intézményi repozitóriumban (DEA) tárolt változat
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