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There were such examples if you were using X11 forwarding, for example as described in this report: https://thejh.net/written-stuff/openssh-6.8-xsecurity Similar issue was published many years ago: http://www.giac.org/paper/gcih/571/x11-forwarding-ssh-considered-harmful/104780 All these should be fixed now, but using -X forwarding to untrusted machines ...


Can someone crawl back down your SSH connection and infect your computer? No. Can they see there's a connection from your external IP address then scan/enumerate/potentially exploit your gateway (e.g. router)? Yes. What you should really be concerned with is if the proxy provider is worth trusting with your web traffic. By proxying your traffic through ...


Quoting Comcast Business Internet: Static IP is not supported on retail devices due to technical limitations. Static IP is only supported via Comcast Business CCR & BWG leased devices: CCR (Comcast Commercial Routers: SMC D3G-CCR or Netgear CG3000DCR) / BWG (Business Wireless Gateways: Cisco DPC3939B or Cisco DPC3941B). For more information ...


If you understand what is going on in X11 forwarding, you will know that it is not so simple as described in the answer from @yaegashi. X11 forwarding is creating another layer under the ssh and it can't be chained as normal terminal data streams. But you are able to do it using port forwarding: Based on this blog post, which does it as hardcoding in shell ...


Why doesn't that solution with ProxyCommand work for X11 forwarding? I think you can directly reach mum's computer with X11 forwarding using the following configuration. Host mum ProxyCommand ssh -q -W localhost:1993 login@vps0 ForwardX11 yes


Second case is very useful in situation when example.com can connect to [google.com] host while your box can't. For example, you have VPN connection which is restricted to a number of boxes, while you want to access host not in list. ssh -L 123:target.host.com:456 user@vpn.host.com. So, basic usage is to jump INSIDE the network or jump OUTSIDE the network ...


This is not answering you question, but this answer on SU is solving your problem, I guess: Using ProxyCommand in your ~/.ssh/config should do everything for you: Host server HostName server.tld User {server user} Host proxy ProxyCommand ssh server -W %h:%p User {proxy user} Then you can access your server simply by using ssh server

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