I typically find myself with voluminous bashrc files filled with aliases and functions for connecting to specific hosts via ssh. I would like an easier way to manage the various ssh hosts, ports, and keys.<\/p>\n
I typically maintain an ssh-agent across multiple hosts<\/a>, as well as various tunnels; reverse tunnels<\/a>, and chained tunnels<\/a> — but I would like to simplify my normal ssh commands using an ssh config.<\/p>\n First, always remember to RTFM,<\/p>\n This is an excellent starting point, the man page contains plenty of information on all the ins-and-outs of an ssh config.<\/p>\n To get started, simply create a plaintext file “config” in your .ssh\/ directory.<\/p>\n $HOME\/.ssh\/config will be used by your ssh client and is able to set per-host defaults for username, port, identity-key, etc<\/p>\n For example,<\/p>\n On this particular host, I can now run<\/p>\n Which is much easier than “ssh -A -p 22000 twarnock@dev.tech.avant.net<\/em>”<\/p>\n You can also use wildcards, e.g.,<\/p>\n which I find very useful for cases where usernames are different than my normal username.<\/p>\n Additionally, you can add tunneling information in your .ssh\/config, e.g.,<\/p>\n Even if you chose to use shell functions to manage tunnels, the use of an ssh config can help simplify things greatly.<\/p>\n","protected":false},"excerpt":{"rendered":" I typically find myself with voluminous bashrc files filled with aliases and functions for connecting to specific hosts via ssh. I would like an easier way to manage the various ssh hosts, ports, and keys. I typically maintain an ssh-agent across multiple hosts, as well as various tunnels; reverse tunnels, and chained tunnels — but […]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[14,5],"tags":[],"_links":{"self":[{"href":"https:\/\/tech.avant.net\/q\/wp-json\/wp\/v2\/posts\/865"}],"collection":[{"href":"https:\/\/tech.avant.net\/q\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/tech.avant.net\/q\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/tech.avant.net\/q\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/tech.avant.net\/q\/wp-json\/wp\/v2\/comments?post=865"}],"version-history":[{"count":10,"href":"https:\/\/tech.avant.net\/q\/wp-json\/wp\/v2\/posts\/865\/revisions"}],"predecessor-version":[{"id":1221,"href":"https:\/\/tech.avant.net\/q\/wp-json\/wp\/v2\/posts\/865\/revisions\/1221"}],"wp:attachment":[{"href":"https:\/\/tech.avant.net\/q\/wp-json\/wp\/v2\/media?parent=865"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/tech.avant.net\/q\/wp-json\/wp\/v2\/categories?post=865"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/tech.avant.net\/q\/wp-json\/wp\/v2\/tags?post=865"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}man ssh\n<\/pre>\n
Setting Defaults<\/h2>\n
# $HOME\/.ssh\/config\nHost dev\n HostName dev.tech.avant.net\n Port 22000\n User twarnock\n ForwardAgent yes\n<\/pre>\n
$ ssh dev\n<\/pre>\n
Host *amazonaws.com *ec2.nytimes.com *.dev.use1.nytimes.com\n User root\n<\/pre>\n
Tunnels<\/h2>\n
Host tunnel.tech.avant.net\n HostName tech.avant.net\n IdentityFile ~\/.ssh\/avant.key\n LocalForward 8080 localhost:80\n User twarnock\n<\/pre>\n