Check for External IP

[ghanisoft]

Does any ASUS beta version has an option to check for external ip under DDNS. I'm using ASUS RX 55 and my ISP assigns a Wan IP that is private and DDNS is not working and hence the mobile app. Can any one help me on this?

Thanks

 

[eibgrad]

If your ISP assigns a *private* IP, then it's typically NOT going to matter if your DDNS works since remote access is NOT possible w/ a private IP. It must be a public IP.

Use of an external IP checker only makes sense if your ISP provides a public IP, but it happens your router is downstream of the ISP's primary router (the one where the public IP is assigned). Now you can port forward from the primary router to your own router.

 

[ghanisoft]

I cannot access the primary router as it is with ISP. I just get cable directly from ISP that I need to connect to my router WAN port. Is there any option to access my router via app using this setup?

Thanks

 

[ghanisoft]

Also, prior to using Asus routers. I used TP Link, DLink and MI router and was able to access the router via their app without any issues with the same setup.

 

[eibgrad]

Perhaps I misunderstood. It initially sounded to me as if you were claiming your router is being assigned a private IP. But if it's the case the ISP's router is being assigned a *public* IP, but your own downstream ASUS router's WAN ip is assigned a private IP by the ISP's router, then remote access *is* possible.

I have no idea if the ASUS oem/stock firmware is capable of using an external IP checker. Does the ISP's router offer a DDNS option?

 

[SimoniZ]

If you are unable to access the ISP supplied router and login using a cusadmin account, then contact the ISP and ask if either of these options are available:

1. Ask if they is willing to place their router in bridge mode (highly unlikely).
2. Ask if the router they manage has IP Passthrough capability and if they could enable this option on one of the free switch ports. This will disable all of the gateway/firewall features on one of the switch ports and just pass through a second public IP to your Asus router.

I use IP Passthrough and it works well. No one in this forum wants to deal with a double NAT situation, so bridge more or IP Passthrough are the only options in this case.

I suspect some people have managed to get DDNS or anything that requires remote access to work by using port forwarding on the ISP router to forward the required ports to their Asus router, but no one wants to go through that headache.

 

[ghanisoft]

Perhaps I misunderstood. It initially sounded to me as if you were claiming your router is being assigned a private IP. But if it's the case the ISP's router is being assigned a *public* IP, but your own downstream ASUS router's WAN ip is assigned a private IP by the ISP's router, then remote access *is* possible.

I have no idea if the ASUS oem/stock firmware is capable of using an external IP checker. Does the ISP's router offer a DDNS option?

Thanks for the answer. My router is getting assigned a private wan IP but when I check for my external IP using https://www.ipchicken.com/, it shows my public IP. Can I make the remote access work in this situation as DDNS is not working it says you have a private IP.

 

[ghanisoft]

If you are unable to access the ISP supplied router and login using a cusadmin account, then contact the ISP and ask if either of these options are available:

1. Ask if they is willing to place their router in bridge mode (highly unlikely).
2. Ask if the router they manage has IP Passthrough capability and if they could enable this option on one of the free switch ports. This will disable all of the gateway/firewall features on one of the switch ports and just pass through a second public IP to your Asus router.

I use IP Passthrough and it works well. No one in this forum wants to deal with a double NAT situation, so bridge more or IP Passthrough are the only options in this case.

I suspect some people have managed to get DDNS or anything that requires remote access to work by using port forwarding on the ISP router to forward the required ports to their Asus router, but no one wants to go through that headache.

Thanks for the answer. I don't think my ISP allows any of the 2 options. If we have an option to check for external IP in DDNS then it might help. Are you aware does any of the beta versions of ASUSWRT provides this option?

Thanks,

 

[SimoniZ]

Sounds like you can see your public IP, but the issue is that your ISP's router will block remote access, so without any access to the ISP router and if the ISP is unwilling to do anything, then I do not know what else you can do.