WAN gateway IP for VPN

[Twonefive]

I wanted to get my WAN gateway IP to set up a VPN. Yes, I know when comcast then switches my WAN IP address I would loose the VPN, thats fine. I call comcast tonight, and tell them, I know my WAN IP address, I would just like my WAN gateway IP (I already tried trcroute). The tech support told me to open command prompt and run ipconfig, so I tried to explain, ipconfig is for your internal LAN not your WAN info. Tech support still had no idea what I was talking about. They then said they couldn't help me because only I have access to my "admin tool" on my modem and router and without that, they can't help. It was extremely frustrating. So if tech support can't help me, what do I do? Where can I go for this information?

[BruceW]

Can't you log in to your router or gateway's admin pages and view the gateway IP there? If you don't know how, post the device model number.

[EG · Accepted solution]

A traceroute will tell you. It's the hop after your router's IP.

[BruceW]

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@EG wrote: A traceroute will tell you. It's the hop after your router's IP.

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I would have thought so, but that's not what I'm seeing here in South Central PA. The first Comcast hop in traceroutes (Win 10 "tracert") is 96.a.b.c, but my router reports a default gateway of 174.d.e.f, so not even on the same subnet. I may be missing something here . . .

[Twonefive]

Of course I can log in to my router. I have no issue there. Logging in to your router will not tell you your Wide Area Network Gateway IP only a trcroute from inside the network to outside the network will sometimes tell you that but it isn't working

[EG]

Why sometimes ? For my 30 years of I.T. experience, it always has.

[Twonefive]

Thats exactly what I'm seeing Bruce! My WAN is in the 7's and a trcroute's first hop is in the 9's. I tried plugging that address into the router anyway while setting it up with a static IP (required for setting up the VPN) and it won't let me save it because it says "Subnet error"

Either way though, this is something support should be able to provide you with ease. The fact they say they can't is very frustrating. I had everything working fine with the VPN until this past weekend when they switched my WAN IP knocking the VPN offline till I got home again. When I got home and attempted to set everything back up, I ran into this problem. Normaly a trcroute solves it but in this case I'm stuck 

[Twonefive]

That's great for you EG? I guess. I don't know why sometimes. Why do two people have the same subnet issue I'm referring to here?

[Twonefive]

For the record, I do appreciate everyone's help and comments on this. I apologize if I sounded short, I don't mean to be. I just get carried away lol, sorry everyone!

[EG]

Perhaps a web proxy is being employed somewhere ?

[BruceW]

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@Twonefive wrote: ... Logging in to your router will not tell you your Wide Area Network Gateway IP ...

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Why not? Mine does: https://i.imgur.com/Sc4gUU6.png

[Twonefive]

I wish mine did. In fact, like yours, my old netgear router did, it was very convenient. The one I have now does not. It'd be nice if it did though

From looking on some more forums, I believe it has something to do with PPPOE (Which I know nothing about but also learned router manufacturers are starting to allow the WAN IP and WAN Gateway IP to be in different subsets when setting up a static IP because of it, the brand I'm using has not done that yet)

https://community.spiceworks.com/topic/2064039-wan-ip-and-wan-gateway-ip

Bruce and EG thank you so much for the help, really appreciate it

[Twonefive]

subnets**

[Twonefive]

Also, EG, your 30 years of experience paid off. Tracert was giving me the correct info, I just didn't know it was possible to have a WAN Gateway IP in a different subnet than your WAN IP

[EG]

Good to hear !! BTW, PPPoE is a DSL protocol, not DOCSIS / cable. Good luck !