Hope they never do it.

ale5000 · #1 (**permalink**) February 6th, 2016

Quote:

Originally Posted by h4x5h17

It is interesting that they don't firewall cable to cable. Is there a big difference is speed between connection inside and outside the network?

I don't know but I think probably yes.

It isn't a real firewall, it is like a private LAN without the possibility of doing port forwarding or use UPnP.
All your PCs in the LAN see eachother directly, instead PCs over the internet see only the IP of your router and not the IPs of PCs in the LAN.

So all users of this ISP see every other directly, but they aren't seen directly from outside.
As example 100 different people (the number is an example) of this ISP may be seen from internet as having the same IP; if one website ban a single IP it is actually banning a lot of people.

The ISP is Fastweb and the eMule mod is "eMule AdunanzA".

h4x5h17 · #2 (**permalink**) February 6th, 2016

Quote:

Originally Posted by ale5000

I don't know but I think probably yes.

It isn't a real firewall, it is like a private LAN without the possibility of doing port forwarding or use UPnP.
All your PCs in the LAN see eachother directly, instead PCs over the internet see only the IP of your router and not the IPs of PCs in the LAN.

So all users of this ISP see every other directly, but they aren't seen directly from outside.
As example 100 different people (the number is an example) of this ISP may be seen from internet as having the same IP; if one website ban a single IP it is actually banning a lot of people.

The ISP is Fastweb and the eMule mod is "eMule AdunanzA".

Do they offer a business class account that provides you with an independent static IP and external port access or would you have to go through a different provider?

Does you modem receive an IPV4 or IPV6 address? I assume the external world IP is IPV4?

Lord of the Rings · #3 (**permalink**) February 6th, 2016

Quote:

Originally Posted by ale5000

... So all users of this ISP see every other directly, but they aren't seen directly from outside...

I have major doubts all fibre-optic services around the world would work in that same way.
I am wondering if the Fastweb company is using that custom technique to greatly reduce it's rollout and/or running costs. Such as the licensing costs of ip addresses.
Even the company name FastWeb sounds like a marketing tool to simply offer fast speeds but limited options for a cheap to fair price.

I wonder if the ipv4 address is in fact an ipv6 address but shows up on ipv4 systems as a private networking address.

Do you know if any of them (your friends) use fibre-optic net phones?

Edit: Long reads & cannot be bothered reading it all. Just investigating the ipv4 & ipv6 conversion techniques.

Quote:

Originally Posted by p23, https://tools.ietf.org/html/rfc7059

Note that ISPs may have multiple subscribers share a public IPv4 address by performing NAT (Carrier-Grade NAT in this context). In this case, the subscribers' home gateways may receive an address in the 100.64.0.0/10 block [RFC6598]. For the purposes of tunnel mechanisms, this address block is similar to the RFC 1918 address blocks. However, tunnel implementations that are aware of NAT and RFC 1918 addresses may not recognise 100.64.0.0/10 as non-public addresses and fail to operate successfully.