diff --git a/Makefile b/Makefile
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+++ b/Makefile
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+all: dnsssh.pdf fediverse.pdf ldap.pdf mrezeosi.pdf python.pdf recon.pdf sql.pdf stajedecentrala.pdf surveillancerequired.pdf tls.pdf uvodulinux.pdf uvodumreze.pdf
+dnsssh.pdf:
+	pandoc -t beamer -V theme:Warsaw -i slides/dnsssh/dnsssh.md -o slides/dnsssh/dnsssh.pdf
+
+fediverse.pdf:
+	pandoc -t beamer -V theme:Warsaw -i slides/fediverse/fediverse.md -o slides/fediverse/fediverse.pdf
+
+ldap.pdf:
+	pandoc -t beamer -V theme:Warsaw -i slides/ldap/ldap.md -o slides/ldap/ldap.pdf
+
+mrezeosi.pdf:
+	pandoc -t beamer -V theme:Warsaw -i slides/mrezeosi/mrezeosi.md -o slides/mrezeosi/mrezeosi.pdf
+
+python.pdf:
+	pandoc -t beamer -V theme:Warsaw -i slides/python/python.md -o slides/python/python.pdf
+
+recon.pdf:
+	pandoc -t beamer -V theme:Warsaw -i slides/recon/recon.md -o slides/recon/recon.pdf
+
+sql.pdf:
+	pandoc -t beamer -V theme:Warsaw -i slides/sql/sql.md -o slides/sql/sql.pdf
+
+stajedecentrala.pdf:
+	pandoc -t beamer -V theme:Warsaw -i slides/stajedecentrala/stajedecentrala.md -o slides/stajedecentrala/stajedecentrala.pdf
+
+surveillancerequired.pdf:
+	pandoc -t beamer -V theme:Warsaw -i slides/surveillancerequired/surveillancerequired.md -o slides/surveillancerequired/surveillancerequired.pdf
+
+tls.pdf:
+	pandoc -t beamer -V theme:Warsaw -i slides/tls/tls.md -o slides/tls/tls.pdf
+
+uvodulinux.pdf:
+	pandoc -t beamer -V theme:Warsaw -i slides/uvodulinux/uvodulinux.md -o slides/uvodulinux/uvodulinux.pdf
+
+uvodumreze.pdf:
+	pandoc -t beamer -V theme:Warsaw -i slides/uvodumreze/uvodumreze.md -o slides/uvodumreze/uvodumreze.pdf
+
+clean:
+	rm -f slides/dnsssh/dnsssh.pdf slides/fediverse/fediverse.pdf slides/ldap/ldap.pdf slides/mrezeosi/mrezeosi.pdf slides/python/python.pdf slides/recon/recon.pdf slides/sql/sql.pdf slides/stajedecentrala/stajedecentrala.pdf slides/surveillancerequired/surveillancerequired.pdf slides/tls/tls.pdf slides/uvodulinux/uvodulinux.pdf slides/uvodumreze/uvodumreze.pdf
diff --git a/slides/ldap/ldap.jpg b/slides/ldap/ldap.jpg
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diff --git a/slides/ldap/ldap.md b/slides/ldap/ldap.md
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+++ b/slides/ldap/ldap.md
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+# LDAP
+
+# Sta je LDAP?
+
+- Protokol za cuvanje i pristup podatcima
+- Uglavnom informacije o korisnicima (username,password)
+- Hierarhijska struktura (grupe korisnika)
+- Veliki broj servisa ima opciju za LDAP za korisnike
+
+# Hierarhija
+
+
+![ldap](slides/ldap/ldap.jpg)
+
+# Hierarhija
+
+- Domain component (DC)
+- Organizational Unit (OU)
+- Korisnici (UID)
+
+# Klase i atributi
+
+- Distinguished Name (dn)
+- Object class
+- Atributi
+
+# Search
+
+(&(objectClass=person)(givenName=John))
+
+# OpenLDAP
+
+OpenBSD-ova implementacija LDAP-a
+
+# Python
+
+python3-ldap3 biblioteka
+
+# python3-ldap3 setup
+
+CONNECTION TO LDAP SERVER
+
+from ldap3 import Server,Connection,ALL,MODIFY_REPLACE
+
+s=Server('192.168.122.233',use_ssl=True,get_info=ALL)
+c=Connection(s,'cn=cn=admin,dc=example,dc=com','secret',auto_bind=True)
+
+# python3-ldap3 setup
+
+ADD DC OBJECT
+
+objectClass = ['dcObject', 'organization']
+
+attributes = {'o' : 'example', 'dc' : 'example'}
+
+c.add('dc=example,dc=com',objectClass, attributes)
+
+# python3-ldap3 setup
+
+ADD ORGANISATIONAL UNIT
+
+objectClass = ['top', 'organizationalUnit']
+
+attributes = {'ou' : 'users'}
+
+c.add('ou=users,dc=example,dc=com', objectClass, attributes)
+
+# python3-ldap3 manage users
+
+ADD USERS
+
+objectClass = ['top', 'person', 'organizationalPerson', 'inetOrgPerson', 'posixAccount', 'shadowAccount']
+
+attributes = {'cn' : 'user1', 'sn' : 'user1', 'givenName' : 'user1', 'uid' : 'user1', 'uidNumber' : 1001, 'gidNumber' : 1001, 'homeDirectory' : '/home/user1', 'loginShell' : '/bin/sh', 'gecos' : 'SystemUser', 'shadowLastChange' : 19433, 'shadowMax' : '45', 'userPassword' : 'password123'}
+
+c.add('uid='user1,ou=users,dc=example,dc=com',objectClass, attributes)
+
+# python3-ldap3 manage users
+
+DELETE USERS
+
+c.delete('user1,ou=users,dc=example,dc=com')
+
diff --git a/slides/ldap/ldap.pdf b/slides/ldap/ldap.pdf
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diff --git a/slides/python/python.md b/slides/python/python.md
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+++ b/slides/python/python.md
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+# Uvod u programiranje
+
+# Promenjive
+
+- Mesto gde drzimo podatke
+- godina=2023
+- godina=2022+1
+- prethodna=2022
+  godina=prethodna+1
+
+# Redosled
+
+- 2023=godina (ne moze!)
+- godina+1=2023 (ne moze!)
+
+# Tip
+- ime="Dragan"
+- prezime="Jovanovic"
+- punoime=ime+prezime
+- godina="2023"
+  godina=2023
diff --git a/slides/sql/sql.md b/slides/sql/sql.md
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+++ b/slides/sql/sql.md
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+# SQL baze podataka
+
+# Tabele
+
+Tabela
+
+![userstable](./slides/sql/table.png)
+
+# Baza
+
+- vise tabela u jednoj bazi
+- pristup preko mreze
+- SQL jezik
+- pozivanje upita iz drugih jezika
+
+# SQL
+
+- SELECT username,password FROM userstable
+- SELECT * FROM userstable
+- SELECT password FROM userstable WHERE username='korisnik1'
+- INSERT INTO userstable (username, password) VALUES (newuser3, pass1)
+
+# Bezbednost
+
+- SQL injection
+- PDO
diff --git a/slides/sql/sql.pdf b/slides/sql/sql.pdf
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diff --git a/slides/sql/table.png b/slides/sql/table.png
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