Squid.conf SSL transparent proxy

squid.conf

visible_hostname vm-gateway
#
# 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 10.10.10.0/24
acl localnet src 127.0.0.1

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:
#
# 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

# Only allow cachemgr access from localhost
http_access allow localhost manager
http_access deny manager

# 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

ssl_bump server-first all
# Squid normally listens to port 3128
#http_port 0.0.0.0:3127 # If we add this port without intercept SSL CONNECT will not contain the hostname, it will provide an IP address instead, and it will not generate SSL certificates for the domain.
http_port 0.0.0.0:3128 intercept
https_port 0.0.0.0:3129 intercept ssl-bump cert=/etc/squid/ssl_cert/myca.pem generate-host-certificates=on # dynamic_cert_mem_cache_size=8MB

# 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/log/squid/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


# the following two options are unsafe and not always necessary:

# always_direct allow all	# specify requests which should ALWAYS be forwarded by Squid to the origin servers without using any peers.
sslproxy_cert_error allow all	# It would also allow SSL connections which might be unsecure.
sslproxy_options ALL		# Enable various bug workarounds suggested as harmless by OpenSSL.
sslproxy_flags DONT_VERIFY_PEER # Accept certificates that fail verification.
#ssl_bump bump all
             
# These options are not necessary
#sslcrtd_program /usr/lib64/squid/ssl_crtd -s /var/lib/ssl_db -M 4MB 
#sslcrtd_children 8 startup=1 idle=1
    
# This is a hack in the init script which helps restart the server much faster
shutdown_lifetime 1 second


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 1742 91634 DNAT       tcp  --  *      *       10.10.10.0/24       0.0.0.0/0           tcp dpt:80 to:10.10.10.10:3128 
 6801  353K DNAT       tcp  --  *      *       10.10.10.0/24       0.0.0.0/0           tcp dpt:443 to:10.10.10.10:3129