Tag Archives: Network

What is IPv6? and Why do we need IPv6?

What is IPv6?

increasing number of Internet users, the limited IP4, IP6 has been no new generation of more flexibility, efficiency,capability, and optimized functionality That can truly meet ourever-Increasing needs.

People refer to IPv6 as “the next-generation Internet protocol,” and it was originally created as the answer to IPv4’s inevitable, looming address-exhaustion crisis.

Though you’ve probably heard a thing or two about IPv6 already, it has been improved even further in the quest to bring us the flexibility, efficiency, capability, and optimized functionality that can truly meet our ever-increasing needs.

Why do we need IPv6?

Because we need to communicate, and our current system isn’t really cutting it anymore—kind of like how the Pony Express can’t compete with airmail. Just look at how much time and effort we’ve invested in coming up with slick new ways to conserve bandwidth and IP addresses.
The amount of people and devices that connect to networks increases each and every day.

You can actually leave out parts of the address to abbreviate it, but to get away with doing that you have to follow a couple of rules. First, you can drop any leading zeros in each of the individual blocks. After you do that, the sample address from earlier would then look like this:

2001:db8:3c4d:12:0:0:1234:56ab

Okay, that’s a definite improvement—at least we don’t have to write all of those extra zeros! But what about whole blocks that don’t have anything in them except zeros? Well, we can kind of lose those too—at least some of them. Again referring to our sample address, we can remove the two blocks of zeros by replacing them with double colons, like this:

2001:db8:3c4d:12::1234:56ab

NAT (Network Address Translation) table untuk  MASQUERADING dengan LINUX

1. Enabling packet forwarding dengan command:

#echo 1 > /proc/sys/net/ipv4/ip_forward

2. Edit NAT table untuk MASQUERADING

Command berikut khusus untuk server Dedicated saja:

#iptables -t nat -A POSTROUTING -s 192.168.1.0/24 -o eth0 -j MASQUERADE

Sedangkan untuk VPS, command nya adalah sbb:

#iptables -t nat -A POSTROUTING -s 192.168.1.0/24 -o venet0 -j SNAT –to 69.156.x.x