[squid-users] Problems with Squid Authentication

[Marcio Demetrio Bacci]

My Kerberos Authentication doesn't work. This is very hard!

My Squid3 is join in the Domain
kinit and klist are ok
wbinfo -g and wbinfo -u are ok too.

I have created the squid3 file in /etc/default with the following content:
KRB5_KTNAME=/etc/squid3/HTTP.keytab
export KRB5_KTNAME

I have two keytab files:
/etc/krb5.keytab and /etc/squid3/HTTP.keytab (both are identical)

I have installed libsasl2-modules-gssapi-mit libsasl2-modules packages
because my Squid server is Debian 8. But I didn't use msktutil tool. I have
only joined Squid server in the Domain (net ads join -U administrator)

How can I debbug the problem?
How can I test kerberos authentication in terminal (command line)?

Below is my squid.conf file:

### Configuracoes Basicas

cache_mgr administrator at empresa.com.br

http_port 3128

#debug_options ALL,111,2 29,9 84,6

cache_mem 512 MB
cache_swap_low 80
cache_swap_high 90

maximum_object_size 512 MB
minimum_object_size 0 KB

maximum_object_size_in_memory 4096 KB

cache_replacement_policy heap LFUDA
memory_replacement_policy heap LFUDA

#Para não bloquear downloads
quick_abort_min -1 KB


#Resolve um problema com conexoes persistentes
detect_broken_pconn on

fqdncache_size 1024

### Parametros de atualizacao da memoria cache
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

### Localizacao dos logs
access_log /var/log/squid3/access.log
cache_log /var/log/squid3/cache.log


### define a localizacao do cache de disco, tamanho, qtd de diretorios pai
e subdiretorios
cache_dir aufs /var/spool/squid3 600 16 256

auth_param negotiate program /usr/lib/squid3/negotiate_kerberos_auth -s
HTTP/proxy.empresa.com.br at EMPRESA.COM.BR
auth_param negotiate children 20
auth_param negotiate keep_alive on

visible_hostname proxy.empresa.com.br

### acls
#acl manager proto cache_object
acl localhost src 192.168.200.7/32
acl to_localhost dst 192.168.200.7/32
acl SSL_ports port 22 443 563 7071 10000 # ssh, https, snews, zimbra, webmin
acl Safe_ports port 21 # ftp
acl Safe_ports port 70 # gopher
acl Safe_ports port 80 # http
acl Safe_ports port 88 # kerberos
acl Safe_ports port 210 # wais
acl Safe_ports port 280 # http-mgmt
acl Safe_ports port 389 # ldap
acl Safe_ports port 443 # https
acl Safe_ports port 488 # gss-http
acl Safe_ports port 563 # snews
acl Safe_ports port 591 # filemaker
acl Safe_ports port 777 # multiling http
acl Safe_ports port 3001         # imprenssa nacional
acl Safe_ports port 8080 # http
acl Safe_ports port 1025-65535 # unregistered ports

acl purge method PURGE
acl CONNECT method CONNECT


### Regras iniciais do Squid
http_access allow localhost
http_access allow purge localhost
http_access deny purge
http_access deny !Safe_ports
http_access deny CONNECT !SSL_ports

### Exige autenticacao
acl autenticados proxy_auth REQUIRED
http_access allow autenticados



### Rede do Local #####
acl rede_local src 192.168.200.0/22


### Nega acesso de quem nao esta na rede local
http_access allow rede_local

#negando o acesso para todos que nao estiverem nas regras anteriores
http_access deny all

### Erros em portugues
error_directory /usr/share/squid3/errors/pt-br

#cache_effective_user proxy
coredump_dir /var/spool/squid3


Regards,

Márcio
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