Ssh server unexpectedly closed network

gdy1039

pfsnese2.0.2

I enable sshd by type "14" in the shell without any other config.
then I use putty 0.60 connect it through lan interface.

after input user name and password,it login success
in this time, if put a "Enter" input,
I will lost the connect, and get a error "server unexpectedly closed network connection"

if I input a number, for example 8
I can use the shell normal.

does someone know how to correct it?
thanks?

wallabybob

@gdy1039:

does someone know how to correct it?

What do you think is the correct behaviour? When I do … I see ... but I expect to see ...

On my system shell option 14 is to DISABLE sshd server. (But maybe option 14 toggles sshd server enable/disable.)

When you give an invalid input to the menu I am not surprised your invalid selection results in closing of your ssh session.

phil.davis

I just checked this on my 2.1-BETA1 system. Yes, pressing return at the menu gives the "server unexpectedly closed network connection" message, and that is the end of the SSH session. I thought it used to redisplay the menu after pressing return - but maybe that is my memory confusing this with the behaviour of the real console.
Normally you enter menu options (e.g. 8 to shell, 0 to logout) so don't see this "feature". I wonder what happens on a 2.0.1 system? Anyone out there still on 2.0.1 could try and post the result.

wallabybob

@phil.davis:

Anyone out there still on 2.0.1 could try and post the result.

From my 2.0.1 system:

Logout (SSH only) 8) Shell

Assign Interfaces 9) pfTop

Set interface(s) IP address 10) Filter Logs

Reset webConfigurator password 11) Restart webConfigurator

Reset to factory defaults 12) pfSense Developer Shell

Reboot system 13) Upgrade from console

Halt system 14) Disable Secure Shell (sshd)

Ping host

Enter an option:

Connection to pfsense closed by remote host.
Connection to pfsense closed.
$

I hit the Enter key at the Enter an option prompt.

cmb

Just hitting "Enter" there has always disconnected the session by design, going back to the very early days. To log out of a SSH session from a command prompt, "exit", enter enter.

gdy1039

thanks for all peoples reply

to:wallabybob
in the local shello, "Enter" is a valid input.
I except to see a redisplay menu.
so I try to do this in the remote ssh shell

to:cmb
It's bad news for me this a normal behavior.
If the screen is flushed by some message,how can i redisplay menu?

and question 2:
in local shell,<ctrl>+ <c>can terminate running job and return to menu,for example command 7 of "ping"
in ssh, It will close the connect.
so how to terminate a running jobs?</c></ctrl>

wallabybob

@gdy1039:

If the screen is flushed by some message,how can i redisplay menu?

8 (to select the shell) then Ctrl-D to exit the shell and return to the menu.

@gdy1039:

in ssh, It will close the connect.

It doesn't for me: If I ssh into pfSense, select option 8 (Shell) , start a ping then type Ctrl-C the ping terminates and I get a shell prompt.

If your ssh sessions behave differently, please provide more details such as the system you ssh'd from and exactly what you are doing. Screen capture would probably be helpful.

gdy1039

It doesn't for me: If I ssh into pfSense, select option 8 (Shell) , start a ping then type Ctrl-C the ping terminates and I get a shell prompt.

If your ssh sessions behave differently, please provide more details such as the system you ssh'd from and exactly what you are doing. Screen capture would probably be helpful.

I test what you say,yeah, I can type ctrl+C terminate ping in local shell.
but I mean's in the pfsense menu selected option 7 to ping host.

ok,get in the shell and then ctrl+D is a good way to redispay the menu.
thanks.