Squid-kerberos

als ads client aufnehmen

zuerst als client aufnehemen https://xinux.net/index.php/Ubuntu-ads-client#.2Fetc.2Fkrb5.conf

msktutils

• apt-get install msktutil

create computeraccount and a local keytab

• kinit administrator

PROXY="proxy.lab34.linuggs.de"
DN="win2022.lab34.linux.de"

• msktutil -c -b "CN=Computers" -s HTTP/$PROXY -k /etc/squid/PROXY.keytab --computer-name PROXYSRV-HTTP --upn HTTP/$PROXY --server $DN -N

chown proxy.proxy /etc/squid3/PROXY.keytab

Kerberos Ticket update

• msktutil --auto-update --computer-name PROXYSRV-HTTP --server $DN -s HTTP/$PROXY -k /etc/squid/PROXY.keytab -N

Crontab

• echo "0 4 * * * msktutil --auto-update --computer-name PROXY --server $DN -s HTTP/$PROXY -k /etc/squid/PROXY.keytab -N" | crontab

/etc/default/squid3

• systemctl edit squid

Environment="KRB5_KTNAME=/etc/squid3/PROXY.keytab"

/etc/squid/squid.conf

acl localnet src 0.0.0.1-0.255.255.255	# RFC 1122 "this" network (LAN)
acl localnet src 10.0.0.0/8		# RFC 1918 local private network (LAN)
acl localnet src 100.64.0.0/10		# RFC 6598 shared address space (CGN)
acl localnet src 169.254.0.0/16 	# RFC 3927 link-local (directly plugged) machines
acl localnet src 172.16.0.0/12		# RFC 1918 local private network (LAN)
acl localnet src 192.168.0.0/16		# RFC 1918 local private network (LAN)
acl localnet src fc00::/7       	# RFC 4193 local private network range
acl localnet src fe80::/10      	# RFC 4291 link-local (directly plugged) machines
acl SSL_ports port 443
acl Safe_ports port 80		# http
acl Safe_ports port 21		# ftp
acl Safe_ports port 443		# https
acl Safe_ports port 70		# gopher
acl Safe_ports port 210		# wais
acl Safe_ports port 1025-65535	# unregistered ports
acl Safe_ports port 280		# http-mgmt
acl Safe_ports port 488		# gss-http
acl Safe_ports port 591		# filemaker
acl Safe_ports port 777		# multiling http
http_access deny !Safe_ports
http_access deny CONNECT !SSL_ports
http_access allow localhost manager
http_access deny manager
auth_param negotiate program /usr/lib/squid/negotiate_kerberos_auth  -k /etc/squid/PROXY.keytab -d -i -s GSS_C_NO_NAME
auth_param negotiate children 10
auth_param negotiate keep_alive off
acl auth proxy_auth REQUIRED
http_access allow auth
include /etc/squid/conf.d/*.conf
http_access allow localhost
http_access deny all
http_port 3128
coredump_dir /var/spool/squid
refresh_pattern ^ftp:		1440	20%	10080
refresh_pattern ^gopher:	1440	0%	1440
refresh_pattern -i (/cgi-bin/|\?) 0	0%	0
refresh_pattern .		0	20%	4320

restart

service squid3 start

client Machine

Set your proxy to server dewey.xinux.org using port 3128. It is important that you use the fully qualified domain name and NOT the IP address.

debugging

• http://squid-web-proxy-cache.1019090.n4.nabble.com/squid-kerb-auth-received-type-1-NTLM-token-td2131613.html

sources

• http://roshan-g.blogspot.de/2014/05/squid-with-kerberos-and-ldap.html
• http://wiki.squid-cache.org/ConfigExamples/Authenticate/WindowsActiveDirectory
• http://stackoverflow.com/questions/18075028/squid-integration-with-active-directory-best-practise
• http://manpages.ubuntu.com/manpages/trusty/man8/negotiate_kerberos_auth.8.html
• http://serverfault.com/questions/66556/getting-squid-to-authenticate-with-kerberos-and-windows-2008-2003-7-xp