[squid-users] Need help on squid configuration with remote icap server

From: Anil Kapu <anil.kapu_at_gmail.com>
Date: Wed, 11 Dec 2013 16:47:15 +0530

Hi,

I'm a new to squid and ICAP and requesting for help. I'm trying to
setup a URL filtering feature provided by c-icap server. I'm having
trouble configuring my Squid Server to communicate with the ICAP
server setup on a remote machine. If I have ICAP server on same
machine as Squid server(127.0.0.1), there is no issue in communication
between squid and ICAP server. URL blocking also occurs successfully

Following is the setup:
I have setup Squid on 192.168.10.8 and ICAP server on 192.168.10.9, on
192.168.10.8 in squid.conf file I have provided "icap_service
service_req reqmod_precache routing=on bypass=1 icap://<icap server
ip>:1344/url_check_module".

When I try to open any URL on the machine where squid is setup I get
following error in squid log "optional ICAP service is down after an
options fetch failure: icap://192.168.10.9:1344/url_check_module
[down,!opt]" (I have setup my iptables to route all the http traffic
to squid port 3128)

I have attached my squid config file setting below

Any help here is much appreciated
Thanks
Anil
------------------------------
-------------------
#
# Recommended minimum configuration:
#
acl manager proto cache_object
acl localhost src 127.0.0.1/32 ::1
acl to_localhost dst 127.0.0.0/8 0.0.0.0/32 ::1

# Example rule allowing access from your local networks.
# Adapt to list your (internal) IP networks from where browsing
# should be allowed
acl localnet src 10.0.0.0/8 # RFC1918 possible internal network
acl localnet src 172.16.0.0/12 # RFC1918 possible internal network
acl localnet src 192.168.0.0/16 # RFC1918 possible internal network
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 1344
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
acl CONNECT method CONNECT

#
# Recommended minimum Access Permission configuration:
#
# Only allow cachemgr access from localhost
http_access allow manager localhost
http_access deny manager

# Deny requests to certain unsafe ports
http_access deny !Safe_ports

# Deny CONNECT to other than secure SSL ports
http_access deny CONNECT !SSL_ports

# We strongly recommend the following be uncommented to protect innocent
# web applications running on the proxy server who think the only
# one who can access services on "localhost" is a local user
#http_access deny to_localhost

#
# INSERT YOUR OWN RULE(S) HERE TO ALLOW ACCESS FROM YOUR CLIENTS
#

# Example rule allowing access from your local networks.
# Adapt localnet in the ACL section to list your (internal) IP networks
# from where browsing should be allowed
http_access allow localnet
http_access allow localhost
http_access allow arjun_ip

# And finally deny all other access to this proxy
http_access deny all

# Squid normally listens to port 3128
http_port 3128 intercept

# We recommend you to use at least the following line.
hierarchy_stoplist cgi-bin ?

# Uncomment and adjust the following to add a disk cache directory.
#cache_dir ufs /var/spool/squid 100 16 256

# Leave coredumps in the first cache dir
coredump_dir /var/spool/squid

icap_enable on
icap_service service_req reqmod_precache routing=on bypass=1
icap://192.168.10.9:1344/url_check_module
adaptation_access service_req allow all
icap_service_failure_limit -1

# Add any of your own refresh_pattern entries above these.
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
Received on Wed Dec 11 2013 - 11:17:23 MST

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