关于ssh登录外网的问题

lwsy711

我是教育网用户，需要通过ssh登录到国外的实验室，但是现在不能登录，ssh返回的错误信息是域名解析不正确。试图通过学校的http代理服务器登录，可是国外实验室不支持http登录。请问有什么方法能够登录？
请教各位大侠了，谢谢！
以下是通过connect.c连接的错误信息：
connect -d -H proxy.lzu.edu.cn xxx@jlab.org 8080
DEBUG: No direct address are specified.
DEBUG: relay_method = HTTP (3)
DEBUG: relay_host=proxy.lzu.edu.cn
DEBUG: relay_port=80
DEBUG: relay_user=lw
DEBUG: local_type=stdio
DEBUG: dest_host=xxx@jlab.org
DEBUG: dest_port=8080
DEBUG: Program is $Revision: 1.96 $
DEBUG: resolving host by name: xxx@jlab.org
DEBUG: failed to resolve locally.
DEBUG: resolving host by name: proxy.lzu.edu.cn
DEBUG: resolved: proxy.lzu.edu.cn (202.201.0.150)
DEBUG: connecting to 202.201.0.150:80
DEBUG: begin_http_relay()
DEBUG: >>> "CONNECT xxx@jlab.org:8080 HTTP/1.0\r\n"
DEBUG: >>> "\r\n"
DEBUG: <<< "HTTP/1.1 500 ( The specified Secure Sockets Layer (SSL) port is not allowed. ISA Server is not configured to allow SSL requests from this port. Most Web browsers use port 443 for SSL requests.  )\r\n"
DEBUG: http proxy is not allowed.
FATAL: failed to begin relaying via HTTP.