diff --git a/notes/.obsidian/plugins/obsidian-activity-history/data.json b/notes/.obsidian/plugins/obsidian-activity-history/data.json
index ef24f4d..ac2f074 100644
--- a/notes/.obsidian/plugins/obsidian-activity-history/data.json
+++ b/notes/.obsidian/plugins/obsidian-activity-history/data.json
@@ -12,8 +12,8 @@
   "checkpointList": [
     {
       "path": "/",
-      "date": "2022-12-07",
-      "size": 951747
+      "date": "2022-12-08",
+      "size": 935160
     }
   ],
   "activityHistory": [
@@ -959,6 +959,10 @@
         {
           "date": "2022-12-07",
           "value": 17877
+        },
+        {
+          "date": "2022-12-08",
+          "value": 17663
         }
       ]
     }
diff --git a/notes/.obsidian/workspace.json b/notes/.obsidian/workspace.json
index 00d5e9f..dddf4f6 100644
--- a/notes/.obsidian/workspace.json
+++ b/notes/.obsidian/workspace.json
@@ -4,16 +4,16 @@
     "type": "split",
     "children": [
       {
-        "id": "2c0a53a26a140c14",
+        "id": "cf371c90f6aec102",
         "type": "tabs",
         "children": [
           {
-            "id": "f7d9932211c6b72c",
+            "id": "bdcb0a1ff6ac1ed9",
             "type": "leaf",
             "state": {
               "type": "markdown",
               "state": {
-                "file": "mat/Funkce/Logaritmus.md",
+                "file": "cjl/literatura/slohy/Klasicismus/del Art.md",
                 "mode": "source",
                 "source": false
               }
@@ -77,7 +77,7 @@
             "state": {
               "type": "backlink",
               "state": {
-                "file": "mat/Funkce/Logaritmus.md",
+                "file": "cjl/literatura/slohy/Klasicismus/del Art.md",
                 "collapseAll": false,
                 "extraContext": false,
                 "sortOrder": "alphabetical",
@@ -94,7 +94,7 @@
             "state": {
               "type": "outgoing-link",
               "state": {
-                "file": "mat/Funkce/Logaritmus.md",
+                "file": "cjl/literatura/slohy/Klasicismus/del Art.md",
                 "linksCollapsed": false,
                 "unlinkedCollapsed": true
               }
@@ -141,7 +141,7 @@
             "state": {
               "type": "outline",
               "state": {
-                "file": "mat/Funkce/Logaritmus.md"
+                "file": "cjl/literatura/slohy/Klasicismus/del Art.md"
               }
             }
           },
@@ -201,17 +201,17 @@
     "width": 300,
     "collapsed": true
   },
-  "active": "f7d9932211c6b72c",
+  "active": "bdcb0a1ff6ac1ed9",
   "lastOpenFiles": [
-    "conflict-files-obsidian-git.md",
-    "mat/Funkce/Logaritmus.md",
-    "mat/mat.md",
-    "dej/dej.md",
-    "dej/moderní/komunismus/Brutalismus.md",
-    "dej/moderní/komunismus/České století, Všechnu moc lidu Stalinovi.md",
-    "fyz/fyz.md",
-    "fyz/Mechanika tekutin/Termodynamika/Termodynamická teplota.md",
-    "fyz/Mechanika tekutin/Termodynamika/Termodynamika.md",
-    "fyz/Mechanika tekutin/Proudění/Rozdělení.md"
+    "cjl/literatura/slohy/Klasicismus/Empír.md",
+    "cjl/literatura/slohy/Klasicismus/Hudba.md",
+    "cjl/literatura/slohy/Klasicismus/Klasicismus.md",
+    "cjl/literatura/slohy/Klasicismus/Osvícenství.md",
+    "cjl/literatura/slohy/Klasicismus/Klasicismus a osvícení.md",
+    "psi/psi.md",
+    "Untitled.md",
+    "psi/CCNA2/Port security.md",
+    "psi/CCNA2/CCNA2.md",
+    "ech/ech.md"
   ]
 }
\ No newline at end of file
diff --git a/notes/Untitled.md b/notes/Untitled.md
new file mode 100644
index 0000000..73945c2
--- /dev/null
+++ b/notes/Untitled.md
@@ -0,0 +1 @@
+# Untitled
diff --git a/notes/notes.md b/notes/notes.md
index ae81298..5e4d582 100644
--- a/notes/notes.md
+++ b/notes/notes.md
@@ -22,4 +22,5 @@
 -  [[README|README]]
 -  [[tek/tek|tek]]
 -  [[učitelé/učitelé|učitelé]]
+-  [[Untitled|Untitled]]
 %% Zoottelkeeper: End of the autogenerated index file list  %%
diff --git a/notes/psi/CCNA2/CCNA2.md b/notes/psi/CCNA2/CCNA2.md
index 33188e7..23c6469 100644
--- a/notes/psi/CCNA2/CCNA2.md
+++ b/notes/psi/CCNA2/CCNA2.md
@@ -1,6 +1,8 @@
+# CCNA2
 %% Zoottelkeeper: Beginning of the autogenerated index file list  %%
 -  [[psi/CCNA2/DHCP|DHCP]]
 -  [[psi/CCNA2/EtherChannel|EtherChannel]]
+-  [[psi/CCNA2/Port security|Port security]]
 -  [[psi/CCNA2/Spanning Tree Protocol|Spanning Tree Protocol]]
 -  [[psi/CCNA2/vlan|vlan]]
 %% Zoottelkeeper: End of the autogenerated index file list  %%
diff --git a/notes/psi/CCNA2/Port security.md b/notes/psi/CCNA2/Port security.md
new file mode 100644
index 0000000..555c174
--- /dev/null
+++ b/notes/psi/CCNA2/Port security.md	
@@ -0,0 +1,6 @@
+# Port security
+`encapsulation dot1q` - router on a stick, použije router na routování vlan, funguje jako trunk
+`(config-if-range)# switchport port-security maximum 1` nastaví maximum adres na 1.
+`switchport port-security violation restrict` omezí počet portů (ignoruje zařízení nad povolený limit).
+`switchport port-security aging time 60` nastaví délku omezení při porušení pravidla na 60 minut.
+`show port-security interface fastEthernet 0/1` zobrazí status port security.
\ No newline at end of file