Hello,
So what I am trying to accomplish here is to basically have a whitelist of
domains that is allowed via http/https. If the UID is squid,apache, or root
then basically you will bypass squid and anything is allowed. This was working
well on 3.4.2 however once I moved to 3.5.10 it no longer works properly. I
also noticed that there are “new” features peek,slice etc which is probably my
issue since I was not using it. I have tried several combination and have only
gotten it to work for http traffic. All https traffic is currently being
blocked by the configuration. Below are my configurations. I don’t need to
"inspect" any of the traffic just want to have a whitelist of allowed domains
if you are not UID squid,apache, or root via http/https. Any help would be
appreciated !!
##### IPTABLES
$iptables -L -t nat
Chain PREROUTING (policy ACCEPT)
target prot opt source destination
Chain POSTROUTING (policy ACCEPT)
target prot opt source destination
Chain OUTPUT (policy ACCEPT)
target prot opt source destination
natoutlogaccept tcp -- anywhere anywhere multiport
dports http,https owner UID match squid
natoutlogaccept tcp -- anywhere anywhere multiport
dports http,https owner UID match apache
natoutlogaccept tcp -- anywhere anywhere multiport
dports http,https owner UID match root
REDIRECT tcp -- anywhere anywhere tcp dpt:http redir
ports 3401
REDIRECT tcp -- anywhere anywhere tcp dpt:https
redir ports 4827
Chain natoutlogaccept (3 references)
target prot opt source destination
LOG all -- anywhere anywhere LOG level debug
prefix `nat out iptables accept '
ACCEPT all -- anywhere anywhere
##### Squid.conf
sslproxy_cert_error allow all
sslproxy_flags DONT_VERIFY_PEER
sslcrtd_program /usr/lib64/squid/ssl_crtd -s /home/squid/ssl_db -M 4MB
sslcrtd_children 50
https_port 4827 intercept ssl-bump generate-host-certificates=on
dynamic_cert_mem_cache_size=4MB cert=/etc/squid/certs/squid.aarp.org.crt
key=/etc/squid/certs/squid.key
# HTTPS forward port
https_port 127.0.0.1:6887 cert=/etc/squid/certs/squid.crt
key=/etc/squid/certs/squid.key
http_port 3401 transparent
# HTTP forward port
http_port 127.0.0.1:6886
logformat squid %tl.%03tu %6tr %>a %Ss/%03Hs %<st %rm %ru %[un %Sh/%<a %mt
access_log /var/log/squid/access.log squid
always_direct allow all
cache deny all
cache_dir ufs /home/squid/cache 100 16 256
acl step1 at_step SslBump1
acl step2 at_step SslBump2
acl step3 at_step SslBump3
acl nobumpSites ssl::server_name "/etc/squid/allowed_domains/allowed_domains"
ssl_bump peek step1 all
ssl_bump splice nobumpSites
ssl_bump bump
acl http proto http
acl https proto https
acl port_80 port 80
acl port_443 port 443
http_access allow http port_80 nobumpSites
http_access allow https port_443 nobumpSites
http_access deny all
##### allowed_domains
.cnn.com <http://cnn.com/>
.google.com <http://google.com/>
.facebook.com <http://facebook.com/>
….etc
#### squid log
TAG_NONE/403 350 HEAD https://www.facebook.com/ <https://www.facebook.com/> -
HIER_NONE/- text/html
TCP_MISS/200 593 GET http://www.cnn.com/ <http://www.cnn.com/>
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