bouncing SSH connections jumping SSH connections jumping SSH connections jumping SSH connections jumping SSH connections very clever solution Proxy Jump Proxy Jump very clever solution Proxy Jump bouncing SSH connections ProxyCommand Proxy Jump jump host SSH jump host in Gentoo Wiki SSH jump hosts very clever solution Gentoo doc, SSH jump host https://wiki.gentoo.org/wiki/SSH_jump_host пример bouncing SSH connections Gentoo doc, SSH jump host bouncing SSH connections SSH jump hosts Gentoo: SSH jump host Proxy Jump https://wiki.gentoo.org/wiki/SSH_jump_host Gentoo: SSH jump host SSH_jump_host