diff --git a/KleinDocs.tree b/KleinDocs.tree
index 52c180b..d529525 100644
--- a/KleinDocs.tree
+++ b/KleinDocs.tree
@@ -10,12 +10,14 @@
-
+
+
+
-
+
@@ -23,6 +25,7 @@
+
diff --git a/topics/FrontPage.md b/topics/FrontPage.md
index 58064f5..10c9b75 100644
--- a/topics/FrontPage.md
+++ b/topics/FrontPage.md
@@ -11,16 +11,17 @@ Select the subject you're looking for in the left menu bar, or use the [](#short
### Alphabetical shortcuts
{#shorts}
-| Link to page | Link to page | Link to page |
-|-----------------------------------|--------------------|--------------------------|
-| [](Apps.md) | [](Linux.md) | [](Overview.md) |
-| [](CloudflareConfig.md) | [](KleinServer.md) | [](-gebruik.md) |
-| [](Documents.md) | [](KleinSense.md) | [](Router-addresses.md) |
-| [](Endpoints.md) | [](KleinOps.md) | [](Routers.md) |
-| [](Familie-Klein-foto-archief.md) | [](KleinHole.md) | [](Server-addresses.md) |
-| [](Github.md) | [](Media.md) | [](Servers.md) |
-| [](Home_automation.md) | [](Network.md) | [](Switch-addresses.md) |
-| [](HomeAssistant.md) | [](Networking.md) | [](ToDo.md) |
-| [](KleinArchives.md) | [](OS.md) | [](Wazuh.md) |
-| [](Klein-Familiearchief.md) | [](Other.md) | [](Windows.md) |
+| Shortcut to page | Shortcut to page | Shortcut to page |
+|-----------------------------------|--------------------------|----------------------------------|
+| [](Apps.md) | [](KleinServer.md) | [](Remote-Wireshark-on-Linux.md) |
+| [](CloudflareConfig.md) | [](KleinSense.md) | [](Routers.md) |
+| [](Documents.md) | [](KleinOps.md) | [](Router-addresses.md) |
+| [](Endpoints.md) | [](KleinHole.md) | [](Server-addresses.md) |
+| [](Familie-Klein-foto-archief.md) | [](Media.md) | [](Servers.md) |
+| [](Github.md) | [](Network.md) | [](SSH-keys.md) |
+| [](Home_automation.md) | [](Networking.md) | [](Switch-addresses.md) |
+| [](HomeAssistant.md) | [](OS.md) | [](ToDo.md) |
+| [](KleinArchives.md) | [](Other.md) | [](Wazuh.md) |
+| [](Klein-Familiearchief.md) | [](Overview.md) | [](Windows.md) |
+| [](Linux.md) | [](Paperless-gebruik.md) | |
diff --git a/topics/KleinArchives/documents/-gebruik.md b/topics/KleinArchives/documents/Paperless-gebruik.md
similarity index 100%
rename from topics/KleinArchives/documents/-gebruik.md
rename to topics/KleinArchives/documents/Paperless-gebruik.md
diff --git a/topics/KleinOps/network/Remote-Wireshark-on-Linux.md b/topics/KleinOps/network/Remote-Wireshark-on-Linux.md
new file mode 100644
index 0000000..12e6d4b
--- /dev/null
+++ b/topics/KleinOps/network/Remote-Wireshark-on-Linux.md
@@ -0,0 +1,52 @@
+
+
+# Remote Wireshark
+
+This page contains the procedure to set up Remote packet sniffing on Linux with Wireshark.
+## ___________________
+_*Linux target*_ (NOT possible on OPNsense/Freebsd)
+Add a capture group and add yourself to it.
+```
+$ sudo groupadd pcap
+$ sudo usermod -a -G pcap $USER
+```
+Next, add the pcap group and set permissions to tcpdump
+```
+$ sudo chgrp pcap /usr/sbin/tcpdump
+$ sudo chmod 750 /usr/sbin/tcpdump
+```
+*OR* (depending on the distro)
+```
+$ sudo chgrp pcap /usr/bin/tcpdump
+$ sudo chmod 750 /usr/bin/tcpdump
+```
+Finally, use setcap to give tcpdump the necessary permissions:
+```
+$ sudo setcap cap_net_raw,cap_net_admin=eip /usr/sbin/tcpdump
+```
+_*Windows system running Wireshark*_
+
+(re-)Install the latest Wireshark and make sure you tick _*sshdump*_ option during the installation process.
+
+Click the _*SSH remote capture*_ icon and fill out the following fields:
+
+Server tab
+```
+Remote SSH server address:
+Remote SSH server port: (most likely: 22)
+```
+Authentication tab
+```
+Remote SSH server username:
+Remote SSH server password:
+```
+Capture tab
+```
+Remote capture command selection: tcpdump
+Gain capture privilege on the remote machine: sudo
+Privileged user name for sudo or doas: (as above)
+```
+
+Check the "Save parameter(s) on capture start" tick box.
+
+Exit and start the sniffer by clicking the _*SSH remote capture*_ caputure device.
\ No newline at end of file
diff --git a/topics/KleinOps/network/Server-addresses.md b/topics/KleinOps/network/Server-addresses.md
index 6faa8f2..76bf357 100644
--- a/topics/KleinOps/network/Server-addresses.md
+++ b/topics/KleinOps/network/Server-addresses.md
@@ -5,6 +5,16 @@
This page contains server address information.
## ___________________________
+### Preferred port ranges
+
+| Purpose | From | To |
+|--------------------------|------|------|
+| Misc standalone services | 3000 | 3099 |
+| Public Websites | 4000 | 4099 |
+| Backend | 4100 | 4199 |
+| Databases | 5000 | 5099 |
+| Internal web GUI | 8000 | 8099 |
+
```
### KleinServer
{#kleinserver}
diff --git a/topics/KleinOps/os/Linux/SSH-keys.md b/topics/KleinOps/os/Linux/SSH-keys.md
new file mode 100644
index 0000000..e651dc4
--- /dev/null
+++ b/topics/KleinOps/os/Linux/SSH-keys.md
@@ -0,0 +1,33 @@
+
+
+# Set up SSH keys
+
+How to setup access to Linux systems using SSK keys.
+## ___________________
+
+Linux server:
+```
+cd ~/.ssh
+$ ssh-keygen -t ed25519
+```
+Put id_ed25519.pub key content -> ~/.ssh/authorized_keys
+```
+$ chmod 700 ~/.ssh
+$ chmod 600 ~/.ssh/authorized_keys
+$ chown $USER:$USER ~/.ssh -R
+```
+Windows client:
+```
+copy Linux server: id_ed25519 -> Windows: C:\users\\.ssh\id_ed25519__
+
+In Solar-putty:
+Left-top menu-dots: Generate certificates
+
+In Putty keygen:
+Conversions/import key: C:\users\\.ssh\id_ed25519__
+
+Save private key:
+id_ed25519__.ppk
+
+Solar-putty: Settings/Credentials/Private key:
+id_ed25519__.ppk
diff --git a/topics/KleinOps/servers/KleinServer.md b/topics/KleinOps/servers/KleinServer.md
index f5db070..4a816c0 100644
--- a/topics/KleinOps/servers/KleinServer.md
+++ b/topics/KleinOps/servers/KleinServer.md
@@ -26,19 +26,6 @@
| xrdp | Dedicated account for service |
| Azure | Dedicated account for service |
-
-
-### Preferred port ranges
-
-| Purpose | From | To |
-|--------------------------|------|------|
-| Misc standalone services | 3000 | 3099 |
-| Public Websites | 4000 | 4099 |
-| Backend | 4100 | 4199 |
-| Databases | 5000 | 5099 |
-| Internal web GUI | 8000 | 8099 |
-
-
### Ports & containers (by name)
| Process | (Published) IP port | Remarks |