IP addresses have been assigned in Israel since the late 70s (then only within universities) and since the early 90s commercially by ISPs. However, with the accelerated penetration of the Internet worldwide (there are currently about 1.9 billion users on the Internet), addresses The IPv4 we are familiar with is dwindling.In fact, experts estimate that In the coming years we will witness a severe shortage At these addresses, at least until the ISPs move to the new address format, IPv6.
As part of the "Recent Preparations for IPv6" seminar held recently in Tel Aviv by NDI Technologies, in collaboration with the website Routing.co.il, Participants heard about the ever-diminishing IPv6NUMX address system, future solutions, transition tools and transition programs for organizations and companies.
In discussions towards the end of the IPv4 era, the claim was made that "Israel has a lot of IPv4 addresses" and therefore there is no need to activate IPv6 in Israel immediately. New information presented at the conference revealed the number of IP addresses in Israel (see diagram), as well as the IPv6 addresses already purchased By the Israeli suppliers.
|IP addresses purchased in Israel (by years)|
As you can see, the number of IPv4 addresses in Israel amounts to about 5 million addresses in total.
At the same time, the status of the IPvxNUMX addresses was displayed in Israel, and vendors were exposed אינטרנט Who have already purchased IPv6 addresses, but it turned out that some of them do not use the blocks they have already received.
The Alternative - NAT-444
Admittedly, the immediate switch to IPv6 is not the only solution to the problem. One of the alternatives presented at the conference is the NAT-444, or in general the so-called LSN - Large Scale NAT.
According to the NAT-444 method, addresses will be converted by the Internet Service Provider (ISP) in addition to the addresses that are performed at home.
The following is a structure Network NAT-444 is offered:
Users אינטרנט Sophisticated homeowners (or with the help of experts) know how to "open ports", or rather to map TCP traffic coming from their external IP address to an internal address and port. This is how it can actually be installed on a server אינטרנט, FTP, etc.
With the NAT-444 method, another mapping will be performed by the ISP, so that in practice several users will be bound under a single external IP address. In this method, it is difficult for home users to define specific port forwarding because it is necessary to define this in the Internet provider as well.
An existing option is to offer surfers such a definition system through an ISP portal, but in order to realize this, the provider will be required to assign users a fixed "intermediate" address.
If the NAT-444 option is implemented, the service provider will have to offer its customers a technologically inferior connectivity route that does not give the customer a global Internet address. Proposals have been made to offer such a service to new customers at a reduced price, however the regulatory legality and ISP license currently granted to suppliers should also be examined.
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* The writer is a webmaster Routing, A blog about communications