Update how to remote access astron.

doc/erko_howto_tools.txt

@@ -21,6 +21,7 @@
 * Jupyter
 * Graphana
 * Zenodo DOI
+* SDPTR
 
 
 
@@ -491,8 +492,23 @@ Host dop421
 
 * Remote access to regression test machine dop349:
 ssh -X kooistra@portal.astron.nl
-ssh -X regtest@dop349
 
+# Ipv via portal.astron.nl nu via bastion.astron.nl (195.169.155.27) mbv step client
+# zie: https://support.astron.nl/confluence/pages/viewpage.action?spaceKey=IN&title=SSH+access+to+the+ASTRON+network
+
+/home/kooistra/.ssh/config
+/home/kooistra/.step/ssh/config
+/home/kooistra/.step/ssh/known_hosts
+
+ssh -J bastion.astron.nl regtest@dop349.astron.nl
+You won't be asked for a (bastion) password. The certificate you've just generated will last for twelve hours. Once it's elapsed, the only step from the above you need to perform again is
+
+$ step ssh login kooistra@astron.nl --provisioner "keycloak"
+
+Whereupon you'll be good for another twelve hours. The above command is a great candidate for a shell alias.
+
+
+# On dop349
 crontab -l  # shows scheduled cron jobs
 crontab -e  # edit schedule
 
@@ -919,3 +935,16 @@ Reading package lists... Done
 
 > sudo apt-get install openscad
 Gelukt !
+
+
+*******************************************************************************
+* SDPTR
+*******************************************************************************
+
+sudo pip3 install setuptools-rust
+sudo pip3 install asyncua
+
+:kooistra@dop466:/dop466_0/kooistra/git/sdptr/test/py/control$ ./sdp_rw.py --host dop421 -l
+:kooistra@dop466:/dop466_0/kooistra/git/sdptr/test/py/control$ ./sdp_rw.py --host dop421 -r firmware_version
+
+