Squid-Kit-ldap: Unterschied zwischen den Versionen

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*systemctl restart squid
 
*systemctl restart squid
 
===Die Änderungen===
 
===Die Änderungen===
−
*vi /etc/squid/squi.conf
+
*vi /etc/squid/squid.conf
 +
acl localnet src 0.0.0.1-0.255.255.255
 +
acl localnet src 10.0.0.0/8
 +
acl localnet src 100.64.0.0/10
 +
acl localnet src 169.254.0.0/16
 +
acl localnet src 172.16.0.0/12
 +
acl localnet src 192.168.0.0/16
 +
acl localnet src fc00::/7
 +
acl localnet src fe80::/10
 +
acl SSL_ports port 443
 +
acl Safe_ports port 80
 +
acl Safe_ports port 21
 +
acl Safe_ports port 443
 +
acl Safe_ports port 70
 +
acl Safe_ports port 210
 +
acl Safe_ports port 1025-65535
 +
acl Safe_ports port 280
 +
acl Safe_ports port 488
 +
acl Safe_ports port 591
 +
acl Safe_ports port 777
 +
http_access deny !Safe_ports
 +
http_access deny CONNECT !SSL_ports
 +
http_access allow localhost manager
 +
http_access deny manager
 +
<span style="color:blue"># http_access allow localhost</span>
 +
http_access deny to_localhost
 +
http_access deny to_linklocal
 +
include /etc/squid/conf.d/*.conf
 +
auth_param basic program /usr/lib/squid/basic_ldap_auth -v 3 -b dc=it213,dc=int -D cn=admin,dc=it213,dc=int -w 123Start$ -f uid=%s -H ldaps://ldap.it213.int
 +
auth_param basic children 20 startup=0 idle=1
 +
auth_param basic concurrency 0
 +
auth_param basic credentialsttl 500 seconds
 +
auth_param basic realm it213 proxy server
 +
auth_param basic casesensitive off
 +
acl ldap-auth proxy_auth REQUIRED
 +
<span style="color:red">external_acl_type ldap_group %LOGIN /usr/lib/squid/ext_ldap_group_acl -v 3 -b ou=groups,dc=it213,dc=int -D cn=admin,dc=it213,dc=int -w 123Start$ -f "(&(objectClass=posixGroup)(cn=%g)(memberUid=%u))" -H ldaps://ldap.it213.int</span>
 +
<span style="color:red">acl teamleitung external ldap_group teamleitung</span>
 +
<span style="color:red">acl agents external ldap_group agents</span>
 +
<span style="color:red">http_access allow teamleitung</span>
 +
<span style="color:red">acl badsites url_regex "/etc/squid/badsites.txt"</span>
 +
<span style="color:red">http_access deny badsites agents</span>
 +
<span style="color:red">http_access allow agents</span>
 +
<span style="color:blue"># http_access allow ldap-auth</span>
 +
http_access deny all
 +
http_port 3128
 +
coredump_dir /var/spool/squid
 +
refresh_pattern ^ftp:        1440    20%    10080
 +
refresh_pattern -i (/cgi-bin/|\?) 0 0% 0
 +
refresh_pattern .            0      20%    4320

Version vom 2. April 2026, 13:56 Uhr

Auf dem LDAP Server

Wir legen 2 Gruppen an

Wir trennen Benutzer nach Berechtigungen in Gruppen.
Die Gruppe „teamleitung“ bekommt später vollen Zugriff, „agents“ wird eingeschränkt.
  • ldapaddgroup teamleitung
  • ldapaddgroup agents
Benutzer werden den Gruppen zugeordnet.
Die Gruppenzugehörigkeit steuert später den Zugriff im Squid.
  • ldapadduser wilma teamleitung
  • ldapadduser betty teamleitung
  • ldapadduser fred agents
  • ldapadduser barney agents
Setzt die Passwörter für die Benutzer.
Diese werden für die Anmeldung am Proxy verwendet.
  • ldapsetpasswd wilma
  • ldapsetpasswd betty
  • ldapsetpasswd fred
  • ldapsetpasswd barney

Auf dem SQUID Server

Authentifizierung mit LDAP

Authentifizierung erfolgt gegen einen LDAP-Server.
TLS sollte verwendet werden, damit Benutzername und Passwort nicht im Klartext übertragen werden.
Benötigte Pakete für LDAP-Unterstützung.

ldap-utils enthält Tools zum Testen der Verbindung.

Installation

  • apt install libldap2 ldap-utils

Wenn noch nicht geschehen

  • apt install squid-openssl

Wir testen die Verbindung zum LDAP Server

Wir erstellen die Konfiguration
  • vi /etc/ldap/ldap.conf
BASE    dc=it213,dc=int
URI     ldaps://ldap.it213.int
ldap_version

Kommen wir auf den Ldap Server?

  • ldapsearch -x

Verschlüsselung ok?

  • openssl s_client -host ldap.it213.int -port 636

Die Konfiguration

Wir fangen wieder bei null an

  • cd /etc/squid
  • grep "^[^#]" squid.conf.org > squid.conf

Die Änderungen

  • vi /etc/squid/squid.conf
acl localnet src 0.0.0.1-0.255.255.255
acl localnet src 10.0.0.0/8
acl localnet src 100.64.0.0/10
acl localnet src 169.254.0.0/16
acl localnet src 172.16.0.0/12
acl localnet src 192.168.0.0/16
acl localnet src fc00::/7
acl localnet src fe80::/10
acl SSL_ports port 443
acl Safe_ports port 80
acl Safe_ports port 21
acl Safe_ports port 443
acl Safe_ports port 70
acl Safe_ports port 210
acl Safe_ports port 1025-65535
acl Safe_ports port 280
acl Safe_ports port 488
acl Safe_ports port 591
acl Safe_ports port 777
http_access deny !Safe_ports
http_access deny CONNECT !SSL_ports
http_access allow localhost manager
http_access deny manager
# http_access allow localhost
http_access deny to_localhost
http_access deny to_linklocal
include /etc/squid/conf.d/*.conf
auth_param basic program /usr/lib/squid/basic_ldap_auth -v 3 -b dc=it213,dc=int -D cn=admin,dc=it213,dc=int -w 123Start$ -f uid=%s -H ldaps://ldap.it213.int
auth_param basic children 20 startup=0 idle=1
auth_param basic concurrency 0
auth_param basic credentialsttl 500 seconds
auth_param basic realm it213 proxy server
auth_param basic casesensitive off
acl ldap-auth proxy_auth REQUIRED
http_access allow ldap-auth
http_access deny all
http_port 3128
coredump_dir /var/spool/squid
refresh_pattern ^ftp:        1440    20%     10080
refresh_pattern -i (/cgi-bin/|\?) 0 0% 0
refresh_pattern .            0       20%     4320

Neu starten

  • systemctl restart squid

Die Änderungen

  • vi /etc/squid/squid.conf
acl localnet src 0.0.0.1-0.255.255.255
acl localnet src 10.0.0.0/8
acl localnet src 100.64.0.0/10
acl localnet src 169.254.0.0/16
acl localnet src 172.16.0.0/12
acl localnet src 192.168.0.0/16
acl localnet src fc00::/7
acl localnet src fe80::/10
acl SSL_ports port 443
acl Safe_ports port 80
acl Safe_ports port 21
acl Safe_ports port 443
acl Safe_ports port 70
acl Safe_ports port 210
acl Safe_ports port 1025-65535
acl Safe_ports port 280
acl Safe_ports port 488
acl Safe_ports port 591
acl Safe_ports port 777
http_access deny !Safe_ports
http_access deny CONNECT !SSL_ports
http_access allow localhost manager
http_access deny manager
# http_access allow localhost
http_access deny to_localhost
http_access deny to_linklocal
include /etc/squid/conf.d/*.conf
auth_param basic program /usr/lib/squid/basic_ldap_auth -v 3 -b dc=it213,dc=int -D cn=admin,dc=it213,dc=int -w 123Start$ -f uid=%s -H ldaps://ldap.it213.int
auth_param basic children 20 startup=0 idle=1
auth_param basic concurrency 0
auth_param basic credentialsttl 500 seconds
auth_param basic realm it213 proxy server
auth_param basic casesensitive off
acl ldap-auth proxy_auth REQUIRED
external_acl_type ldap_group %LOGIN /usr/lib/squid/ext_ldap_group_acl -v 3 -b ou=groups,dc=it213,dc=int -D cn=admin,dc=it213,dc=int -w 123Start$ -f "(&(objectClass=posixGroup)(cn=%g)(memberUid=%u))" -H ldaps://ldap.it213.int
acl teamleitung external ldap_group teamleitung
acl agents external ldap_group agents
http_access allow teamleitung
acl badsites url_regex "/etc/squid/badsites.txt"
http_access deny badsites agents
http_access allow agents
# http_access allow ldap-auth
http_access deny all
http_port 3128
coredump_dir /var/spool/squid
refresh_pattern ^ftp:        1440    20%     10080
refresh_pattern -i (/cgi-bin/|\?) 0 0% 0
refresh_pattern .            0       20%     4320
Abgerufen von „http://wiki.ixheim.de/index.php?title=Squid-Kit-ldap&oldid=68427“