Problem when access ssh server under proxy
 

I have a ssh server expose on the internet, and I can ssh it when I am in home(which my home network is directly connect to the internet by ADSL).

When I am in the office, the network for access internet is under a proxy(which likes "xxx.xxx.xxx.xxx 8080"), and what i did is:
1. Install the corkscrew,
2. ceate the ~/.ssh/config file like:
Host *
ProxyCommand corkscrew xxx.xxx.xxx.xxx 8080 %h %p
3. ssh -vvv my.ssh-server.com

But unfortunately the connect is failed with this debug info:

test@test-laptop:~/.ssh$ ssh -vvv server@xxx.xxx.xxx.xxx
OpenSSH_4.7p1 Debian-8ubuntu1.2, OpenSSL 0.9.8g 19 Oct 2007
debug1: Reading configuration data /home/test/.ssh/config
debug1: Applying options for *
debug1: Reading configuration data /etc/ssh/ssh_config
debug1: Applying options for *
debug2: ssh_connect: needpriv 0
debug1: Executing proxy command: exec corkscrew xxx.xxx.xxx.xxx 8080 xxx.xxx.xxx.xxx 22
debug1: permanently_drop_suid: 1000
debug1: identity file /home/test/.ssh/identity type -1
debug1: identity file /home/test/.ssh/id_rsa type -1
debug1: identity file /home/test/.ssh/id_dsa type -1
ssh_exchange_identification: Connection closed by remote host


Anybody knows what the problem ???

That last line of the error makes me think it has something to do with the host key. What authentication mode are you in, you might need to copy your key to the allowed hosts file.