PuTTY Network error: Connection Refused SSH Error, Odroid C2, OpenPHT, WIN10

I thought I’d take my day off and try to turn off the blue LED and configure a remote for my ODroid C2, but I can’t even get past step 1; SSH. I’m a linux newb, so I’m hoping it’s a simple fix I don’t know about. Here’s what I’ve done.

Downloaded PuTTY for Win10
Open and use IP address of Odroid as confirmed in System Settings (photo attached)
Click “Open” and I get “PuTTY Fatal Error - Network error: Connection Refused” (photo attached)

In Odroid Sstem Settings, I’ve confirmed that “Disable SSH Password” is unchecked. Please help, feeling really frustrated that I can’t even get past the first step.

Your odroid does not have ssh enabled. You may need to install it in the OS that’s running OpenPHT.

What manual did you follow to install OpenPHT on Odroid?

Thank you for your help.

I simply followed the instructions here. Does Rasplex/OpenELECLibreELEC not have SSH installed by default?: https://forums.plex.tv/discussion/223080/openpht-for-odroid-c2-information-and-tips/p1

“Install to SD card using GetRasplex, download the OpenPHT for Odroid .img.gz file (see release notes) and use ‘Select image file’, choose the file downloaded.”

Edit: Odroid OpenPHT uses LibreELEC, based on comments in another thread.

In case it matters, I’ve tried 2 computers, both Win10, one wired, one wireless. The Odroid is wired. Haven’t opened any ports on my router, do I need to?

Do I need to somehow shutdown OpenPHT or exist the Odroid to a system screen before attempting SSH? To be clear, I’ve just plugged in the Odroid, and let OPEnPHT load, no other actions taken. Sorry, just wringing my brain and no amount of searching seems to be pulling up the answer for this one.

I tried a different router. Same error.
Tried to use a crossover cable, got something like “No route to host”

I got in with a current version of putty, just like in every version of Rasplex or ‘embedded’ OpenPHT.
I have not disabled the ssh password, because it is known (but better than no password.)

Upon the first connection you are asked if you want to accept the device’s security certificate. Which you must do or there will be no connection.
when logging in, use rootas the user name
and openpht as password

Thank you for your help. I’m not getting a request to accept a security certificate. The SSH password is NOT disabled in the system settings.

Here’s my steps:
a) Open Putty.
b) Type in address of Odroid device as listed in system settings (shown in first post).
c) Click open.
d) Within one second, get the error message listed and shown in post 1. I’m not getting to the point that I can enter a user name and password, or any prompt.

I haven’t changed any other settings in PuTTY. Is there something that would prevent the security certificate from popping up?

@eugovector said:
I haven’t changed any other settings in PuTTY. Is there something that would prevent the security certificate from popping up?

Are you on the same subnet as your Odroid?

Do you use a different firewall than the default Windows one? (usually integrated in some Antivirus package) those sometimes prevent connections too.

Yes on subnet, very simple setup with a commercial router and mostly stock settings except for forwarding some ports (tried opening port 22, didn’t fix it). Tried another router, same error.

I’ll check my laptop, but I’m pretty sure I don’t have an antivirus on it. On my desktop, I just turned off windows firewall and Avast Anti-Virus. Still the same error.

I have no other idea than this:
go here and download the zip version
http://www.chiark.greenend.org.uk/~sgtatham/putty/download.html (this is the real author’s web site)

extract the whole zip file into a folder where a normal user is allowed to write in (so don’t put it into C:\program files)
start putty.exe and watch out for any pop-up windows asking for firewall exemptions and the like

Thank you for your help, but no love there. Extracted to desktop, same behavior (error message in less than 1 second).

I’m going to pull an older, more basic router out when I get home, restore it to factory settings, and try the two devices with nothing else connected (including internet). That’s about as isolated an environment as I can get unless there is a way to SSH without a router using something like a crossover cable. ANyone have suggestions for a more isolated system?

Is WIN10 possibly the issue? Anyone else able to use PuTTY on WIN10 successfully?

@OttoKerner said:
I have no other idea than this:
go here and download the zip version
Download PuTTY: latest release (0.80) (this is the real author’s web site)

extract the whole zip file into a folder where a normal user is allowed to write in (so don’t put it into C:\program files)
start putty.exe and watch out for any pop-up windows asking for firewall exemptions and the like

@eugovector said:
Is WIN10 possibly the issue? Anyone else able to use PuTTY on WIN10 successfully?

I use it on an upgraded install (from Win8.1 to Win 10). No issues.

Well, that’s not it then. I suppose I could try a reinstall of OpenPHT, but I just got everything setup the way I like it. Would hate to lose all my configuration. I’ll have to see if I have another MicroSD hidden away somewhere and save my old install.

I also have access to a chromebook. I’m going to try SSH with that later tonight (I think I found the right instructions online for use with the Secure Shell extension).

Thanks.

@OttoKerner said:

@eugovector said:
Is WIN10 possibly the issue? Anyone else able to use PuTTY on WIN10 successfully?

I use it on an upgraded install (from Win8.1 to Win 10). No issues.

Tried Secure Shell on a chromebook over wireless (Odroid wired), still not connecting. This is what I got (P.S. I renamed the system “PLEXBox”):


Tried a factory reset, as new router, with only the ODroid and a Win10 computer connected. No internet or wireless devices. Same error, so I’m ready to rule out the router unless there are specific ports that need to be forwarded or other common router settings changed.

Are you positive 192.168.10.71 is the IP address of the ODroid-C2?

I mention this because you posted that you have a “simple setup with a commercial router and mostly stock settings”. And generally the default IP range is 192.168.1.X, not 192.168.10.X

Yes on subnet, very simple setup with a commercial router and mostly stock settings except for forwarding some ports (tried opening port 22, didn’t fix it). Tried another router, same error.

100% sure it’s 192.168.10.71:

Also, the behavior is different with an incorrect IP. PuTTY grinds for about a minute then returns a “timeout” as opposed to an immediate “refused”

@hthighway said:
Are you positive 192.168.10.71 is the IP address of the ODroid-C2?

I mention this because you posted that you have a “simple setup with a commercial router and mostly stock settings”. And generally the default IP range is 192.168.1.X, not 192.168.10.X

Yes on subnet, very simple setup with a commercial router and mostly stock settings except for forwarding some ports (tried opening port 22, didn’t fix it). Tried another router, same error.

I have another microSD and will try a fresh install tonight.

@eugovector said:
I have another microSD and will try a fresh install tonight.

I’ve experienced this exact issue with a corrupted SD card.