我正在尝试从我的大学网络（代理）通过 SSH 连接到远程服务器。但是，每当我尝试通过 SSH 连接到主机时，我都会收到此错误
ssh_exchange_identification: Connection closed by remote host
这是完整的描述：-
命令 ：-
ssh -vvv root@serverIP -p serverPort
输出 ：-
OpenSSH_5.9p1 Debian-5ubuntu1, OpenSSL 1.0.1 14 Mar 2012
debug1: Reading configuration data /home/prashant/.ssh/config
debug1: /home/prashant/.ssh/config line 1: Applying options for *
debug1: Reading configuration data /etc/ssh/ssh_config
debug1: /etc/ssh/ssh_config line 19: Applying options for *
debug2: ssh_connect: needpriv 0
debug1: Executing proxy command: exec /usr/bin/corkscrew 144.16.192.213 8080 serverIP serverPort
debug1: identity file /home/prashant/.ssh/id_rsa type -1
debug1: identity file /home/prashant/.ssh/id_rsa-cert type -1 …