Differences

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--- infrastructure:ssh [2018-07-19 12:01] – mrks
+++ infrastructure:ssh [2021-01-26 21:23] (current) – mrks
@@ Line 1: / Line 1: @@
 ====== SSH ======
+===== Use SSH keys =====
+In case there is no ''authorized_keys'' file yet, create one:
+  * ''mkdir ~/.ssh''
+  * ''nano ~/.ssh/authorized_keys''
+  * Paste the public key to the file
+Set the permissions for the ''.ssh'' folder and the ''authorized_keys'' file:
+  * ''chmod 700 ~/.ssh''
+  * ''chmod 600 ~/.ssh/authorized_keys''
 ===== SSH and SCP on Windows with smartcard authentication =====
@@ Line 33: / Line 47: @@
-===== Converting X509 certificate to SSH public key =====
+===== Converting CAPI X509 certificate to SSH public key =====
-  * Export in Windows
-    * certmgr.msc
-    * Browse to certificate
-    * Open certificate by double-clicking or right-click and "Open"
-    * Details
-    * Export to file
-    * (*) No, don't export private key
-    * (*) Base-64 encoded X.509 (.CER)
-  * Run: ''openssl x509 -in certificate.cer -pubkey -noout > certificate.pem''
-  * Run: ''ssh-keygen -i -m PKCS8 -f certificate.pem''
-  * The SSH key is displayed
+  * Using OpenSSL
+    * Export in Windows
+      * certmgr.msc
+      * Browse to certificate
+      * Open certificate by double-clicking or right-click and "Open"
+      * Details
+      * Export to file
+      * (*) No, don't export private key
+      * (*) Base-64 encoded X.509 (.CER)
+    * Run: ''openssl x509 -in certificate.cer -pubkey -noout > certificate.pem''
+    * Run: ''ssh-keygen -i -m PKCS8 -f certificate.pem''
+    * The SSH key is displayed
+  * Using PuTTY-CAC
+    * Open PuTTY-CAC
+    * Connection > SSH > Certificate > Set CAPI Cert...
+    * Certificate string for authorized keys file: Copy to Clipboard
 ===== Using Pageant with SSH in Cygwin and MinGW =====
@@ Line 61: / Line 78: @@
   * MinGW
     * $ eval  $(<path-to>/ssh-pageant.exe -r -a "/tmp/.ssh-pageant-$USERNAME")
+===== Using a Proxy with SSH in Cygwin and MinGW =====
+  * ''$ ssh -o ProxyCommand='ncat --proxy-type http --proxy proxy-server:proxy-port --proxy-auth proxy-user:proxy-password %h %p' remote-host''
+  * ncat is part of [[https://nmap.org/|nmap]]
@@ Line 70: / Line 94: @@
     * ''$ plink -L 1234:remote-host:22 -P 2233 user@jump-server''
   * Use a different known hosts file when creating multiple tunnels: ''$ ssh -o UserKnownHostsFile=~/.ssh/known_hosts_tunnel_remote-host -L 1234:remote-host:22 -p 2233 user@jump-server''
+  * SSH into remote-user@remote-host behind jump-user@jump-server: ''$ ssh -J jump-user@jump-server remote-user@remote-host''
+SSH config with jump server:
+<code>
+# SSH into remote-user@remote-host behind jump-user@jump-server
+Host my-remote
+    ForwardAgend yes
+    Hostname remote-host
+    User remote-user
+    ProxyJump jump-user@jump-server
+</code>