added ssh

README.md

@@ -1 +1 @@
-# knowledgebase
+- [[SSH]]

docs/SSH.md

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+- [[ssh dir permissions]]
+- [[ssh cipher benchmark]]
+- [[ssh jump server]]
+

docs/ssh cipher benchmark.md

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+```bash
+for i in `ssh -Q cipher`; 
+do dd if=/dev/zero bs=1M cunt=100 2> /dev/null \
+  | ssh -c $i someuser@localhost "(time -p cat) > /dev/null" 2>&1 \
+  | grep real | awk '{print "'$i': "100 / $2" MB/s" }'; done
+```
+
+#ssh #cipher 

docs/ssh dir permissions.md

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+- `chmod  0700 ~/.ssh`
+- `chmod 600 ~/.ssh/authorized_keys`

docs/ssh jump server.md

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+Here is the example configuration of access to work PC connected to home openvpn server 
+```shell
+Host ubuntu-rpi
+  HostName ubuntu-rpi
+  User ubuntu
+  RequestTTY yes
+  RemoteCommand tmux new-session -A -s main
+
+Host router
+  HostName 192.168.1.1
+  User admin
+  Port 8888
+
+Host srukr-redeyed-pc
+  HostName 10.8.0.42
+  User redeyed
+  ProxyJump router
+  RequestTTY yes
+  PasswordAuthentication yes
+  RemoteCommand tmux new-session -A -s main
+  LocalForward 60012 localhost:60012
+
+```
+
+Now I can access `srukr-redeyed-pc` just type `ssh srukr-redeyed-pc`