there's no place like 127.0.0.1

[idkfa]

You said passthrough, presumably with your router. Are both systems on your router?

Assuming yes, are you using ip address or DNS names to connect?

Correct, I have my own router.
Yes, both systems are on this same router and on the same subnet (the ATT modem/router is on the other subnet).
I'm using IP addresses.

 

[rhamersley]

That's 1-2-3-4-5

Gotcha…

 

[KellyinAvon]

Gotcha…
View attachment 148385

Some here (particularly the one with the Waco Kid avatar) will disagree, but I think this was Mel Brooks' best movie.

 

[rhamersley]

Some here (particularly the one with the Waco Kid avatar) will disagree, but I think this was Mel Brooks' best movie.

I like them all, actually. My text tone is “Hey boys, look what I got here” from blazing saddles…

 

[jkaetz]

Correct, I have my own router.
Yes, both systems are on this same router and on the same subnet (the ATT modem/router is on the other subnet).
I'm using IP addresses.

Which subnet are you using for your router? Is it different from the ATT gateway? The default is 192.168.1.x
Did you change anything else on your router to accommodate the switch to ATT?
What does

curl PC1:9000

return if run from PC1?
what about

curl 127.0.0.1:9000

from PC1?
If nothing changed on your router other than the WAN side of it, it shouldn't have had any impact on the app. Does this app reach out to the internet?

If your ATT gateway is a NOT a BGW-320 there are a few options that may allow you to remove it all together.

 

[druckernut]

In the old days you would finger some other ports

Ah yes, I remember those days.

 

[idkfa]

Which subnet are you using for your router? Is it different from the ATT gateway? The default is 192.168.1.x

It's 192.168.2.x
Yes, the ATT gateway is 192.168.1.254

Did you change anything else on your router to accommodate the switch to ATT?

Nope. Even the subnet was more of the router's "idea" (it just suggested using it for some reason).
It's a trusty Asus RT-N66W.

What does

curl PC1:9000

return if run from PC1?

Huh, it's

curl: (7) Failed to connect to 192.168.1.254 port 9000: Connection refused

what about

curl 127.0.0.1:9000

from PC1?

Huh again...

curl 127.0.0.1:9000
curl: (56) Recv failure: Connection was reset

Curiously,

curl localhost:9000

returns the correct HTML.

If nothing changed on your router other than the WAN side of it, it shouldn't have had any impact on the app.

Yeah... That seems to be the consensus...

Does this app reach out to the internet?

Yes, it does.

If your ATT gateway is a NOT a BGW-320 there are a few options that may allow you to remove it all together.

Yeah, I read about it, but I have that specific bugger, unfortunately.

 

[cbhausen]

When I was a kid we used to do some riddle math problem on it TI calculators and the answer was 71077345 which spelled ”SHELLOIL” upside down.

 

[druckernut]

Here's a real conundrum for all y'all IT-inclined.
I have an app running on port 9000 on one Windows 10 machine (let's call its IP PC1).
I have another Win 10 machine on the same network (PC2).

1) I can ping PC1 from PC2
2) I can

telnet PC1 9000

from PC2
3) I can

nc -v PC1 9000

from PC2's WSL2 instance
4) PROBLEM: I cannot PC1:9000 in the browser on PC2
5)

curl PC1:9000

returns

url: (56) Recv failure: Connection was reset

Cherry on the top: I was able to access the app from any machine on LAN.
The problem started when I recently moved and connected to ATT fiber, so I had to set up their POS modem/router as a passthrough.


So it's
- not the firewall,
- not the antivirus,
- not the app.

Out of ideas.

I stopped being a techie long ago when I went into design and project management. Looking back, I should have stayed a techie. :-)

I believe problem(s) has to be in the IP addresses (PCs and modem/router). Unfortunately, I neither have a solution nor time to educate myself to find one. Good news is I found some info. at community.cisco.com and stack.overflow.com (great places to search):

Link 1

Link 2

Link 3

Link 4

I'm also trying to get in contact with a friend who knows this stuff well. Will keep you informed. Also, please let me know how it goes or if I can help in other ways.

Mike

 

[idkfa]

I stopped being a techie long ago when I went into design and project management. Looking back, I should have stayed a techie. :-)

I believe problem(s) has to be in the IP addresses (PCs and modem/router). Unfortunately, I neither have a solution nor time to educate myself to find one. Good news is I found some info. at community.cisco.com and stack.overflow.com (great places to search):

Link 1

Link 2

Link 3

Link 4

I'm also trying to get in contact with a friend who knows this stuff well. Will keep you informed. Also, please let me know how it goes or if I can help in other ways.

Mike

Thank you, this is much appreciated!

 

[femurphy77]

BAH! Give me BR549 anytime.

 

[femurphy77]

When I was a kid we used to do some riddle math problem on it TI calculators and the answer was 71077345 which spelled ”SHELLOIL” upside down.

As I remember it it was something about so many Jews and so many Arabs going to war and who the winner would be. Definitely wouldn't fly in today's some society!

 

[jkaetz]

It's 192.168.2.x
Yes, the ATT gateway is 192.168.1.254


Nope. Even the subnet was more of the router's "idea" (it just suggested using it for some reason).
It's a trusty Asus RT-N66W.

Asus is good stuff, stick with it. Though the BGW 320 is supposed to be pretty good when compared to the usual WiFi 6 routers that people buy. There is an effort underway to gain root access to the 320 and turn it into a true bridge but the only person I know that did it actually pulled the eMMC off the board to gain root. They were going to then see if there was something that could be exploited without hardware modification.

Huh, it's

curl: (7) Failed to connect to 192.168.1.254 port 9000: Connection refused

This should be your smoking gun. If your network is 192.168.2.x, it shouldn't be trying to use 192.168.1.254. I'm guessing the app or computer has a hard coded default gateway of 192.168.1.254 and your ASUS network used to be in the 192.168.1.x range.

Two things should fix it. Find the offending IP settings in the app/pc and adjust or change the ATT gateway to some other network range and put the Asus back on 192.168.1.x

 

[Gaffer]

58008 on a Ti-30 calculator turned upside down spells boobs.

At least it is an even number!

 

[foszoe]

MAC address

 

[druckernut]

Someone looking for me?

Excellent!!!

 

[printcraft]

MAC address

They are everywhere. We’ve got 5 in Kokomo. Is the McRib back yet?

 

[druckernut]

I have no idea what's going on.

Hi DD,

If you ask me to build something that doesn't come with numbered instructions, my reaction would be the same. We all have our trade skills. :-)

The running joke explained (very briefly, and probably poorly):

Every piece of equipment attached to a local network (e.g., in a house) or public network (e.g., the internet) must have an IP address (Internet Protocol address) so other equipment on the network(s) can communicate with it. It works just like your actual home address with the post office.

The network in your house has a default address of 127.0.0.1. This is called the localhost or "home" address. So, in the joke substitute the word "home" for 127.0.0.1. Additionally, information, data, etc. are sent through ports (a PC has 65,535 virtual (intangible) ports). Ports work just like mailboxes.

Hope this helps a little.

 

[TheGrumpyGuy]

BAH! Give me BR549 anytime.

I deal with several large Telco's in my job, and they all use employee ID #'s for identification; whenever they ask me for mine (we don't use them) I always say "BR549" - so far in 12 years, only 2 people have gotten that reference

 

[DoggyDaddy]

Hi DD,

If you ask me to build something that doesn't come with numbered instructions, my reaction would be the same. We all have our trade skills. :-)

The running joke explained (very briefly, and probably poorly):

Every piece of equipment attached to a local network (e.g., in a house) or public network (e.g., the internet) must have an IP address (Internet Protocol address) so other equipment on the network(s) can communicate with it. It works just like your actual home address with the post office.

The network in your house has a default address of 127.0.0.1. This is called the localhost or "home" address. So, in the joke substitute the word "home" for 127.0.0.1. Additionally, information, data, etc. are sent through ports (a PC has 65,535 virtual (intangible) ports). Ports work just like mailboxes.

Hope this helps a little.

I figured it was an IP address, but had no idea what the significance was. I work in IT, but the mainframe environment is more my thing. Thanks for the clarification though! Some of you guys get going and my eyes just glaze over.