Is my ISP blocking port forwarding

honest1

honest1

Guide
I want to access my home network from external IP but unfortunately its not working. I have tried with 2 different routers and both giving me same error.
Questions:
1. Is it possible that ISP may be blocking port forwarding?
2. If yes, then how remote desktop like teamviewer works? ( I have a slight idea that it works because both the remote and server are connected to same teamviewer server)
3. I need some concrete proof that it is the ISP who is blocking it,so that I can write to ISP.

Also ,earlier I used to access it and it was working fine. This was around 6-8 months back.

I tried to use this service and its giving me the following error, I dont know whether its the best method to check the port forwarding or not.

Screenshot_13.png
 
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This is because your ISP is giving you a private IP in the 172.16.X.X range. Recently, my ISP too stopped giving a public IP and is giving a private IP. There is no solution for this AFAIK without the intervention of your ISP.

In my case, its worse, because torrents have stopped working. However, if they dont fix the issue for me - I am going to enable OpenVPN client and bypass the issue.
 
vivek.krishnan said:
This is because your ISP is giving you a private IP in the 172.16.X.X range. Recently, my ISP too stopped giving a public IP and is giving a private IP. There is no solution for this AFAIK without the intervention of your ISP.

In my case, its worse, because torrents have stopped working. However, if they dont fix the issue for me - I am going to enable OpenVPN client and bypass the issue.
Click to expand...

How does this private / public IP matter and @honest1 is it affecting torrents as well ?
I am asking because I am going to subscribe to the same ISP which honest1 is using as of now.
 
When you have a private IP, OR Double NAT as I prefer to call it, this is what happens

uTorrent wants to open port 12345 - your router opens it - but the ISP NAT router does not.

When you have a public IP, you are directly connected to the internet, bypassing any NAT devices. So, you open port 12345, the router opens the port and the others can connect to you.[DOUBLEPOST=1411367825][/DOUBLEPOST]
raksrules said:
But what may be the reason the ISP assigns a private IP instead of public one ?
Click to expand...

Cost. Money. Greed.

IMO, they can use a single public IP and need not pay for an entire range. If they have more users than IPs, then they need to buy more IPs

Private IPs are free. No cost.

They also will ask yearly 2K for a public static IP. Pretty sure. If they do that, I am going to VPN my way out.
 
Most probably they are running out of IPs and don't want to buy another IP series block as mentioned by Vivek. These local ISPs should implement IPV6 now. its high time.
 
Is this a concern that the ISP is assigning private IPs ? Because If it is then I will chuck it and not take the connection.
I want torrents to work fine and across devices like PC, Android tablet and such.
@honest1 any views on this ?
 
cisco_tech said:
Most probably they are running out of IPs and don't want to buy another IP series block as mentioned by Vivek. These local ISPs should implement IPV6 now. its high time.
Click to expand...

I too agree with IPv6 deployment. However, from my experience, no one has the expertise for IPv6. After talking to my ISP, I felt that he has no idea what is private and public IP :banghead:
 
Tried setting up OpenVPN on DD WRT and stuck. Installed the desktop VPN application and torrents are running smooth. So, now need to finetune the DD-WRT script, else will have to setup pfSense.
 
Not able to setup either L2TP or OpenVPN on DD WRT. Cannot pinpoint exact issue. Also will be resetting the ASUS N13 to stock and then back to the latest DD WRT. It might be time to upgrade as well, finally!

On my ISP end, we have complete nutjobs here. If anyone is from Ghatkopar/Powai/Bhandup/Vikhroli, please seriously do not use Rajesh Internet if they continue to give such pathetic services. I feel that MTNL is far better compared to them now - I raised my voice a little bit, and the guy is like - I wont help you - Do what you want.

I dont think they are going to refund the money, so time to get back my board from Gigabyte, where it has been in RMA for about 3 months, and install pfSense.
 
@vivek.krishnan

You are doing all this only so that your home machine is accessible from outside internet right? For a person who doesn't want to do that, this public or private IP stuff doesn't matter right?
 
raksrules said:
@vivek.krishnan

You are doing all this only so that your home machine is accessible from outside internet right? For a person who doesn't want to do that, this public or private IP stuff doesn't matter right?
Click to expand...

I have two uses - Firstly, I need torrents to be working. Though I rarely download these days - for the odd distro or movie apart from TV shows. Secondly, I would prefer to have RDP working so that I can connect to my laptop from outside - this can be done through Teamviewer/Ammyy Admin as well - so not much of an issue.
 
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vivek.krishnan said:
On my ISP end, we have complete nutjobs here. If anyone is from Ghatkopar/Powai/Bhandup/Vikhroli, please seriously do not use Rajesh Internet if they continue to give such pathetic services. I feel that MTNL is far better compared to them now - I raised my voice a little bit, and the guy is like - I wont help you - Do what you want.
Click to expand...

Is that only ISP, except MTNL, in your area?
 
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