[squid-users] Squid 3.5 Proxy Return 503 Error When Set as Proxy in Oralce Yum.conf

[Johnny Lam]

Hi all,

To reduce the bandwidth, we put the Cache Proxy in each regional office.
However, the proxy return 503 error when we try to access yum.oracle.com.
Attached the error log and the squid.conf file for your reference. Do I
need to do any SSL inspection to make it work ?

We already tried to set the company proxy in Cache Proxy setting and also
the Windows Server Connection layer. But result the same.

The connection is like below. The cache proxy 3.5 is installed on Windows
Server

Oralce Linux with yum.conf set > Cache Proxy > Company Proxy > Redhat/Oracle

[image: image.png]
Best Regards,

Johnny Lam
AWS Certified Solutions Architect
Security Consultant

UDS Data Systems Ltd
Office: +852 2851 0271 <+852%202851%200271>, Fax: +852 2851 0155
<+852%202851%200155>
Mobile: +852 9504 5848 <+852%209120%207940> China Mobile: +86 14715379352
<+86%209120%207940>
URL: http://www.udshk.com
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#
# Recommended minimum configuration:
#

# 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 localnet src 172.28.47.0/25

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
acl CONNECT method CONNECT

#
# Recommended minimum Access Permission configuration:
#

acl repo_domain dstdomain yum.oracle.com cdn.redhat.com
http_access allow repo_domain
http_access deny all
#http_access allow all
# Only allow cachemgr access from localhost
http_access allow localhost manager
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

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

# Squid normally listens to port 3128
http_port 3128

# Uncomment the line below to enable disk caching - path format is /cygdrive/<full path to cache folder>, i.e.
cache_dir aufs /cygdrive/d/squid/var/cache/squid 3000000 16 256


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

# 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

dns_nameservers 172.28.45.63 172.28.45.64
forward_max_tries 25

max_filedescriptors 3200

cache_mem 64 MB
cache_swap_high 90
cache_swap_low 30

cache_log d:/squid/var/log/cache.log
access_log d:/squid/var/log/access.log
cache_store_log d:/squid/var/log/store.log
#cache_peer 172.28.121.200 parent 7070 0 no-query default