The Story of Getting SSH Port 22
How SSH port became 22 The default SSH port is 22. It is not a coincidence. This is a story of how it got that port. When I (Tatu Ylonen first published this story in April 2017, it went viral and got about 120,000 readers in three days. The story of getting SSH port 22 I wrote the initial version of SSH (Secure Shell) in Spring 1995. It was a time when telnet and FTP were widely used. Anyway, I d
Mac OSX keeps prompting SSH key passphrase, does not use KeyChain
Mac OSX keeps prompting SSH key passphrase, does not use KeyChain Want to help support this blog? Try out Oh Dear, the best all-in-one monitoring tool for your entire website, co-founded by me (the guy that wrote this blogpost). Start with a 10-day trial, no strings attached. We offer uptime monitoring, SSL checks, broken links checking, performance & cronjob monitoring, branded status pages & so
.ssh/configを管ç†ã™ã‚‹ .ssh/configã§ç®¡ç†ã™ã‚‹
PHPカンファレンス2016
最強ã®SSHè¸ã¿å°è¨å®š - Qiita
追記：openssh-7.3 以é™ãªã‚‰ ProxyJump ã‚„ -J ãŒä½¿ãˆã¾ã™ ホストåã‚’ + ã§ç¹‹ã’ã‚‹ã“ã¨ã§å¤šæ®µProxy接続も簡å˜ã«ã€ãŒã‚³ãƒ³ã‚»ãƒ—トã ã£ãŸæœ¬ã‚¨ãƒ³ãƒˆãƒªã®è¨å®šã§ã™ãŒã€OpenSSH 7.3 ã‹ã‚‰ ProxyJump ã¨ã„ã†è¨å®šãŒä½¿ãˆã‚‹ã‚ˆã†ã«ãªã£ãŸã®ã§ã€ä½¿ãˆã‚‹ãªã‚‰ ProxyJump を使ã†æ–¹ãŒå¥å…¨ã ã—柔軟ã§ä½¿ã„å‹æ‰‹ã‚‚良ã„ã®ã§ãã¡ã‚‰ã‚’覚ãˆã¦å¸°ã‚‹ã“ã¨ã‚’オススメã—ã¾ã™ã€‚ 使ã„æ–¹ã¯ç°¡å˜ã§ä»¥ä¸‹ã®ã‚ˆã†ãªæ„Ÿã˜ã§ã™ã€‚多段も行ã‘ã‚‹ã—ã€è¸ã¿å°ãƒ›ã‚¹ãƒˆæ¯Žã«ãƒ¦ãƒ¼ã‚¶åã‚„ãƒãƒ¼ãƒˆç•ªå·ã‚’変ãˆã‚‹ã“ã¨ã‚‚出æ¥ã¾ã™ã€‚ # 1. bastion.example.jp -> internal.example.jp ssh -J bastion.example.jp internal.example.jp # 2. bastion.example.jp -> internal.example.jp -> super-de
ssh越ã—ã«Atomä»–GUIエディタを使ã„ãŸã„？ãã‚Œã€åŒæœŸãƒ„ールunisonã§ã§ãるよ - Qiita
追記：ã“れを書ã„ãŸå½“時ã¯é–‹ç™ºè€…ã”ã¨ã«EC2インスタンスãŒé…られã¦ã‚‹ç’°å¢ƒã§ã—ãŸã€‚Amazon Linuxã‚„RDSã¨ã‹ã‚‚使ã£ã¦ã„ãŸã®ã§ã€ãƒãƒ¼ã‚«ãƒ«ã§ã‚„ã‚‹ã®ã¯é¢å€’ã¨ã„ã†çŠ¶æ³ã ã£ãŸã®ã§ã€ã„ã‹ã«EC2上ã§ãƒãƒ¼ã‚«ãƒ«ã¨åŒã˜ã‚ˆã†ã«é–‹ç™ºã™ã‚‹ã‹ã‚’追求ã—ãŸã¨ã„ã†èƒŒæ™¯ã§ã™ã€‚ EC2ã¨ã‹ã§ã‚‚Atom使ã„ãŸã„ãƒ»ãƒ»ï¼ Vimã¨ã‹Emacsã¨ã‹ã®CUIエディタã§ã®é–‹ç™ºã‹ã‚‰ã®è„±å´ã‚’ç‹™ã£ã¦ã„ã¦ã€ ãƒãƒ¼ã‚«ãƒ«ã‚¨ãƒ‡ã‚£ã‚¿ã§é–‹ç™ºã—ãŸã„ãŒãƒ»ãƒ» sshå…ˆã®ã‚µãƒ¼ãƒã§ã—ã‹é–‹ç™ºã§ããªã„ 手元ã®Macã«ä¾å˜é–¢ä¿‚ã®ã‚»ãƒƒãƒˆã‚¢ãƒƒãƒ—ã™ã‚‹ã®ãŒã¨ã¦ã‚‚é¢å€’ 実際やã£ã¦ã¿ãŸãŒãƒ»ãƒ» 変更都度rsyncã¨ã‹scpã¨ã‹è¨±ã›ãªã„ sshfsã¯é…ã™ãŽã¦ä½¿ã„ã‚‚ã®ã«ãªã‚‰ãªã„ エディタã®æ©Ÿèƒ½ã§ssh上ã®ãƒ•ã‚¡ã‚¤ãƒ«ã‚’é–‹ãã¨Git連æºã¨ã‹ã®ã„ã‚ã‚“ãªæ©Ÿèƒ½ãŒä½¿ãˆãšã¤ã‚‰ã„ （以å‰ä¸ŠãŒã£ã¦ã„ãŸAtomプラグインを使用ã™ã‚‹æ–¹æ³•ã ã¨ä¸€éƒ¨æ©Ÿèƒ½ãŒä½¿ãˆãªã„ã¯ãšã§ã™ï¼‰ エディタã ã‘ã˜ã‚ƒãªãシェルãªã©ã‚‚ãªã‚‹
SSF - Secure Socket Funneling - Network tool - TCP and UDP port forwarding, SOCKS proxy, Remote shell, Native Relay protocol, Standalone
Secure Socket Funneling (SSF) is a network tool and toolkit. It provides simple and efficient ways to forward data from multiple sockets (TCP or UDP) through a single secure TLS link to a remote computer. The initial aim of SSF was to provide an easy way for users and developers to multiplex and demultiplex various network data flows. It was designed to: be cross platform (Windows XP-10, Linux, OS
Auditing GitHub users' SSH key quality
If you have just/as of late gotten an email about your keys being revoked, this is because of me, and if you have, you should really go through and make sure that no one has done anything terrible to you, since you have opened yourself to people doing very mean things to you for what is most likely a very long time. A little known feature of GitHub is the ability to look at the public SSH keys tha
ãƒã‚°ã‚¢ã‚¦ãƒˆã—ã¦ã‚‚ãƒãƒƒã‚¯ã‚°ãƒ©ã‚¦ãƒ³ãƒ‰ ジョブを継続ã™ã‚‹æ–¹æ³•
ã¯ã˜ã‚ã« SSH 接続ã§æ™‚é–“ã®æŽ›ã‹ã‚‹ã‚·ã‚§ãƒ«ã‚¹ã‚¯ãƒªãƒ—トをãƒãƒƒã‚¯ã‚°ãƒ©ã‚¦ãƒ³ãƒ‰ã§èµ°ã‚‰ã›ã¦å¸°ã‚ŠãŸã„ã®ã«ã€SSH 接続を切るã¨ã‚¸ãƒ§ãƒ–ãŒæ»ã‚“ã§ã—ã¾ã„ã¾ã™ã€‚SSH 接続ã«é™ã‚‰ãšç›®ã®å‰ã® OS ã‹ã‚‰ãƒã‚°ã‚¢ã‚¦ãƒˆã—ãŸã‚Šã‚¿ãƒ¼ãƒŸãƒŠãƒ« エミュレータを終了ã—ã¦ã‚‚åŒã˜ç¾è±¡ãŒèµ·ã“ã‚Šã¾ã™ã€‚ ã“ã®ç—‡çŠ¶ã¯æ£å¸¸ã§ã™ã€‚ãªãœãªã‚‰ã€ãƒãƒƒã‚¯ã‚°ãƒ©ã‚¦ãƒ³ãƒ‰ ジョブを起動ã—ãŸãƒ—ãƒã‚»ã‚¹(ãƒã‚°ã‚¤ãƒ³ シェル)ãŒåプãƒã‚»ã‚¹ã§ã‚る該当ã®ãƒãƒƒã‚¯ã‚°ãƒ©ã‚¦ãƒ³ãƒ‰ã‚¸ãƒ§ãƒ–ã‚’ãƒãƒ³ã‚°ã‚¢ãƒƒãƒ— シグナル( HUP )ã«ã‚ˆã£ã¦çµ‚了ã•ã›ã‚‹ã‹ã‚‰ã§ã™ã€‚ シェルスクリプトを起動ã—ãŸè¦ªãƒ—ãƒã‚»ã‚¹ã¯åプãƒã‚»ã‚¹ã®çµ‚了状態を監視ã—ã¦ã„ã¾ã™ã€‚ã§ã™ã‹ã‚‰ãƒã‚°ã‚¢ã‚¦ãƒˆã—ã¦è¦ªãƒ—ãƒã‚»ã‚¹ã§ã‚るシェルãŒçµ‚了ã™ã‚‹ã¨åプãƒã‚»ã‚¹ã¯ã‚¾ãƒ³ãƒ“ プãƒã‚»ã‚¹ã¨ãªã£ã¦ã—ã¾ã†ã®ã§è¦ªãƒ—ãƒã‚»ã‚¹ã¨ãªã‚‹ã‚·ã‚§ãƒ«(ãƒã‚°ã‚¤ãƒ³ã‚·ã‚§ãƒ«)ã¯åプãƒã‚»ã‚¹ã§ã‚ã‚‹ãƒãƒƒã‚¯ã‚°ãƒ©ã‚¦ãƒ³ãƒ‰ ジョブを kill ( kill -HUP ) ã™ã‚‹ã®ã§ã™ã€‚ nohup コマンド
インフラエンジニアã˜ã‚ƒãªãã¦ã‚‚押ã•ãˆã¦ãŠããŸã„SSHã®åŸºç¤ŽçŸ¥è˜ - Qiita
最近ã¯ã‚¯ãƒ©ã‚¦ãƒ‰ä¸Šã®ã‚µãƒ¼ãƒãƒ¼ã‚’利用ã™ã‚‹äº‹ã‚‚多ããªã£ã¦ããŸã€‚ サーãƒãƒ¼ã®ç”¨æ„ã‚„ãƒãƒƒãƒˆãƒ¯ãƒ¼ã‚¯å‘¨ã‚Šã®è¨å®šã¯ã‚¤ãƒ³ãƒ•ãƒ©éƒ¨é–€ãŒã‚„ã£ã¦ãれるã‘ã©ã€ã‚¢ãƒ—リã®ãƒ‡ãƒ—ãƒã‚¤ï¼è¨å®šã¯é–‹ç™ºè€…ãŒã™ã‚‹äº‹ãŒå¤šã„ã®ã§ã€é–‹ç™ºãƒ¡ã‚¤ãƒ³ã§ã‚„ã£ã¦ã‚‹ã‚¨ãƒ³ã‚¸ãƒ‹ã‚¢ã§ã‚‚最低é™SSHã®çŸ¥è˜ã¯å¿…è¦ã«ãªã‚‹ã€‚ ã¾ãŸã€Vagrantç‰ã§ãƒãƒ¼ã‚«ãƒ«ç’°å¢ƒã«VMを作æˆã™ã‚‹äº‹ã‚‚ã‚ã‚‹ã®ã§ã€ãƒãƒ¼ã‚«ãƒ«ç’°å¢ƒå†…ã§SSHを使用ã™ã‚‹ã‚±ãƒ¼ã‚¹ã‚‚増ãˆã¦ããŸã€‚ ã¨ã„ã†ã‚ã‘ã§ã‚¤ãƒ³ãƒ•ãƒ©ã‚¨ãƒ³ã‚¸ãƒ‹ã‚¢ã˜ã‚ƒãªãã¦ã‚‚SSHクライアントã®çŸ¥è˜ã¯å¿…é ˆã«ãªã£ã¦ãã¦ã„ã‚‹ã®ã§ã€æ”¹ã‚ã¦SSHã®å†å¦ç¿’ã‚’ã—ã¦ã¿ã‚‹ã“ã¨ã«ã—ãŸã€‚ SSHã¨ã¯ æš—å·ã‚„èªè¨¼ã®æŠ€è¡“を利用ã—ã¦ã€å®‰å…¨ã«ãƒªãƒ¢ãƒ¼ãƒˆã‚³ãƒ³ãƒ”ュータã¨é€šä¿¡ã™ã‚‹ãŸã‚ã®ãƒ—ãƒãƒˆã‚³ãƒ«ã€‚ SSHã§ã¯ä»¥ä¸‹ã®ç‚¹ã§å¾“æ¥ã®Telnetより安全ãªé€šä¿¡ãŒè¡Œãˆã‚‹ã€‚1 パスワードやデータを暗å·åŒ–ã—ã¦é€šä¿¡ã™ã‚‹ã€‚ クライアントãŒã‚µãƒ¼ãƒãƒ¼ã«æŽ¥ç¶šã™ã‚‹æ™‚ã«ã€æŽ¥ç¶šå…ˆãŒæ„図ã—ãªã„サーãƒãƒ¼ã«èª˜å°Žã•ã‚Œã¦ã„ãªã„ã‹åŽ³å¯†ã«
OSXã§ECDSAéµã‚’作ã‚ㆠ- リア充爆発日記
http://d.hatena.ne.jp/hnw/20140705 ã‚’èªã‚“ã§ã€ã€ŒECDSAéµã«ã—ã¦ã„ã‚‹ã¨ä¸€ç›®ç½®ã‹ã‚Œã‚‹ã®ã‹ï¼ã€ã¨æ€ã£ãŸã®ã§å³åº§ã«å¯¾å¿œã™ã‚‹ã“ã¨ã«ã—ãŸã€‚ éµé•·ã¯ã€æœ€ä½Žã®256bitã§ã‚‚RSAéµã®3072bit相当ã¨ã„ã†ã“ã¨ã§ã€ç„¡æ„味ã«å¼·åº¦ã‚’å¼·ãã—ã¦ã‚‚コストã®ç„¡é§„ã¨æ€ã†ã—ã€ã©ã†ã›èª°ã«è¦‹ã›ã‚‹äºˆå®šã‚‚ãªã„パンツをãŠã—ゃれãªã‚‚ã®ã«å±¥ã替ãˆã‚‹ç¨‹åº¦ã®ãƒ¢ãƒãƒ™ãƒ¼ã‚·ãƒ§ãƒ³ãªã®ã§256bitã§ã‚ˆã—ã¨ã™ã‚‹ã“ã¨ã«ã—ãŸã€‚ ã§ã€ç”Ÿæˆã—よã†ã¨ã—ãŸã‚‰ãƒ»ãƒ»ãƒ» $ ssh-keygen -t ecdsa -b 256 unknown key type ecdsa ãªã‚“ã¨ã€ãŠã—ゃれã§ä¸€ç›®ç½®ã‹ã‚ŒãŸã„人ãŸã¡ãŒä½¿ã†PCã§å®šè©•ã®ã‚ã‚‹Macã§ã“ã‚“ãªçµæžœã«ãªã‚‹ã¨ã¯ã€‚ ã“ã‚Œã§æŒ«ã‘ãŸã‚‰ã‚¤ã‚«ãƒ³ã¨ã„ã†ã“ã¨ã§ã€sshã‚’updateã™ã‚‹æ–¹æ³•ã‚’調ã¹ãŸã€‚ã‚ã£ãŸã€‚ http://www.dctrwatson.com/2013/07/how-to-u
GitHubユーザーã®SSHéµ6万個を調ã¹ã¦ã¿ãŸ - hnwã®æ—¥è¨˜
（2015/1/30 追記）時期ã¯ä¸æ˜Žã§ã™ãŒã€ç¾æ™‚点ã®github.comã¯Ed25519éµã«ã‚‚対応ã—ã¦ã„ã¾ã™ã€‚ （2016/5/31 追記）「GitHubã«ãƒã‚°å ±å‘Šã—ã¦è³žé‡‘$500ã‚’é ‚ã„ãŸè©±ã€ã§ç´¹ä»‹ã—ãŸé€šã‚Šã€æ—¢ã«å¼±ã„éµã¯GitHubã‹ã‚‰å‰Šé™¤ã•ã‚Œã€æ–°è¦ç™»éŒ²ã‚‚ã§ããªããªã£ã¦ã„ã¾ã™ã€‚ GitHub APIを利用ã—ã¦ã€GitHubã®31661アカウントã«ç™»éŒ²ã•ã‚Œã¦ã„ã‚‹SSH公開éµ64404個をå–å¾—ã—ã¦ã¿ã¾ã—ãŸã€‚抽出方法*1ãŒé©å½“ã™ãŽã¦åã‚ŠãŒã‚るよã†ãªæ°—ã‚‚ã—ã¾ã™ãŒã€é¢ç™½ã„çµæžœãŒå¾—られãŸã¨æ€ã†ã®ã§ã¾ã¨ã‚ã¦ã¿ã¾ã™ã€‚ SSHéµã®ç¨®é¡ž éµã®ç¨®é¡ž 個数 å‰²åˆ RSAéµ 61749 (95.88%) DSAéµ 2647 (4.11%) ECDSAéµ 8 (0.01%) ç´„6万個ã®éµã®ã†ã¡ã€8個ã ã‘ECDSA（楕円DSA）éµãŒè¦‹ã¤ã‹ã‚Šã¾ã—ãŸï¼å¸¸ç”¨ã—ã¦ã„ã‚‹ã®ã‹è©¦ã—ã«ç™»éŒ²ã—ã¦ã¿ãŸã ã‘ãªã®ã‹ã¯ã‚ã‹ã‚Šã¾ã›ã‚“ãŒã€ä½•ã«ã›ã‚ˆ
Top 20 OpenSSH Server Best Security Practices
OpenSSH is the implementation of the SSH protocol. OpenSSH is recommended for remote login, making backups, remote file transfer via scp or sftp, and much more. SSH is perfect to keep confidentiality and integrity for data exchanged between two networks and systems. However, the main advantage is server authentication, through the use of public key cryptography. From time to time there are rumors
SSH Tips & Tricks
1. SSH tips & tricks 2012/03/26 第二回ターミナル勉強会 GREE Inc. Nobutoshi Ogata
netcatを使ã£ã¦è¸ã¿å°ã‚’è¸ã‚€æ‰‹é †ã‚’çœã - ã•ã‚ˆãªã‚‰ã‚¤ãƒ³ã‚¿ãƒ¼ãƒãƒƒãƒˆ
æ‹å•“ 全国１億５åƒä¸‡ã®è¸ã¿å°ã‚µãƒ¼ãƒå¥½ãã®ã¿ãªã•ã¾ 元気ã«è¸ã¿å°ã‚µãƒ¼ãƒã‚’è¸ã¾ã‚Œã¦ã„ã‚‹ã§ã—ょã†ã‹ã€‚ 社内ã§åˆ©ç”¨ã—ã¦ã„ãªãŒã‚‰ã‚ˆãç†è§£ã—ã¦ã„ãªã‹ã£ãŸã®ã§ 改ã‚ã¦ã‚«ã‚¸ãƒ¥ã‚¢ãƒ«ã«å¦ã³ç›´ã—ãŸãƒ¡ãƒ¢ã‚’書ã„ã¦ãŠãã¾ã™ã€‚ å‚考 sshã®ProxyCommandã§nc使ã†ã¨ãã¯-w SEC忘れãªã„よã†ã«ãï¼ URL 2012-09-14 12:46:02 via atig.rb クラアント -> è¸ã¿å°ã‚µãƒ¼ãƒ -> 対象サーãƒã¨ã„ã†æ™‚ã«ã€æ¯Žå›žè¸ã¿å°ã‚µãƒ¼ãƒã«å…¥ã£ã¦ã€å¯¾è±¡ã‚µãƒ¼ãƒã«å…¥ã‚‹ã®ã¯é¢å€’ãã•ã„ã®ã§ 「~/.ssh/configã€ã¸ Host fumidai Hostname 203.0.113.1 User kenjiskywalker Host hoge-web01 Hostname 203.0.113.101 User kenjiskywalker ProxyCommand ssh fumidai nc -w
tmux 㧠pbcopy - unknownplace.org
デフォルトã ã¨å‹•ã‹ãªã„ã®ã§ãªã‚“ã‹å¤‰ãªãƒ©ãƒƒãƒ‘ーを挟むã®ãŒã‚¹ã‚¿ãƒ³ãƒ€ãƒ¼ãƒ‰ãªæ–¹æ³•ã¿ãŸã„ã§ã™ãŒã€ãŸã¾ã«ã—ã‹ä½¿ã‚ãªã„ã®ã«ãã‚“ãªç„¡é§„ãªã“ã¨ã—ãŸããªã„ã¨ã€ # tmux if [[ "$TMUX" != "" ]] then alias pbcopy="ssh 127.0.0.1 pbcopy" alias pbpaste="ssh 127.0.0.1 pbpaste" fi ã¨ã—ã¦ã—ã®ã„ã§ã„る。僕ã®ä½¿ç”¨é »åº¦ã ã¨ã“ã‚Œã§å分ã½ã„。
SSH力をã¤ã‘よã†
2. ã‚‚ã㘠► ãŠã•ã‚‰ã„ â–º クライアント(ssh/scp)ã®è©± ãƒãƒ¼ãƒˆè»¢é€ã®è©± 多段ssh ãã®ä»–ã®è»¢é€ã®è©±ãƒ»ä»–ã®ã‚ªãƒ—ション â–º サーãƒ(sshd)ã®è©± â–º ã¡ã‚‡ã£ã¨ã—ãŸç–‘å• â–º ã‚»ã‚ュリティã®è©± â–º ã¾ã¨ã‚ 2 / 62 5. RFC RFC 4250 The Secure Shell (SSH) Protocol Assigned Numbers RFC 4251 The Secure Shell (SSH) Protocol Architecture RFC 4252 The Secure Shell (SSH) Authentication Protocol RFC 4253 The Secure Shell (SSH) Transport Layer Protocol RFC 4254 The Secure Shell (SSH) Connection Protocol RF
mosh: MITã‹ã‚‰ãƒ¢ãƒã‚¤ãƒ«æ™‚代ã®SSHä»£æ›¿å“ - karasuyamatenguã®æ—¥è¨˜
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