I am trying to connect on fedora 32 via ssh using a host only adapter. I use cygwin mintty as the ssh client and vbox fedora guest to run the ssh server.

If I try to connect to host like this from the server I get prompted to check the key:

ssh serverusername@serverlistenIPaddress -p 22 ( from server )

From the client:

ssh -vvv serverusername@serverlistenipaddress -p 22 (from client)
OpenSSH_8.4p1, OpenSSL 1.1.1f 31 Mar 2020
debug2: resolve_canonicalize: hostname 192.168.1.125 is address
debug3: expanded UserKnownHostsFile '~/.ssh/known_hosts' -> '/home/user/.ssh/known_hosts'
debug3: expanded UserKnownHostsFile '~/.ssh/known_hosts2' -> '/home/user/.ssh/known_hosts2'
debug2: ssh_connect_direct
debug1: Connecting to 192.168.1.25 [192.168.1.25] port 22.
debug1: connect to address 192.168.1.125 port 22: Connection timed out
ssh: connect to host 192.168.1.125 port 22: Connection timed out

There is something about ssh that always gives me time out errors. I use firewalld. I thought it might block things and cause a timeout.

thanks for any helpful tips-
roboloki

I suppose 192.168.1.25 is a typo and 192.168.1.125 is correct.

Connection timed out indicates that the firewall blocks port 22. Use firewall-cmd --list-ports and firewall-cmd --list-services on the server to confirm.

Alternatively, something is wrong with your VirtualBox configuration.

1 members found this post helpful.

Hi all-

I have this linksys router e2500. It doesn't let you configure anything.

Could that be interfering with connecting with ssh if it won't let you change any ports or services or dmz etc?

I mean firewalld is one firewall. As I understand it a router has a built in firewall.

Please let me know if it is possible that my router is interfering.

I don't think it is firewalld. I can ssh on the local host (the server ).

thanks,
robobloki

Hi all-

Yeah. I don't know beans about networking but my theory is I got punked by this router.
Cisco used to let you mess with ports on this model. When Belkin bought linksys that went away.

I have another router I can check out but not tonight.

I am glad I have this spare router because when you live in horse and buggy town they don't exactly sell routers here.

A router with no firewall will blindly pass data between 2 different networks.

I am guessing that is not the case with this thing.

Have a very cool night. I will report back on a separate thread hopefully before the weekend.
roboloki

I am confused about your setup. Can you please state from where to where your ssh succeeds, and from where to where it fails?

If you set up host-only networking, I would expect that the VM is only accessible from the host, and that the router doesn't even know that the VM exists.

Hi B-

This SSH is crazy. I make changes and they don't work. I don't know if there is some kind of poisoned cache like a browser.

The latest is no matter what settings I use it won't let me use passwords instead of keys. It keeps asking for the keys even though I shut that off in my sshd_config.

My connect string : ssh -o PreferredAuthentications=password -o PubkeyAuthentication=no user@127.0.0.1 -p 22

I am not sure why that connect string returns the challenge for the key instead of password..

I tried to pair it down and get a more basic setup. I am just connected to a nat adapter at the moment.

Well, anywho. I stood on my head and banged it against wall long enough for today. I am going to sleep!

thanks,
roboloki

Venting is OK, but to help me find a solution, give me the details that I asked for.

1 members found this post helpful.

Hi B-

I figured out what is going wrong. Thanks for helping.

I needed to tweak my ssh_config under cygwin.

There are many moving pieces to ssh as I am finding out.

Last night, I studied networking that I needed.

Tonight it will be tweaking the ssh_config.

I am sure I can solve the problem now.

thank, you-
roboloki