1. first se t web proxy
/ ip web-proxy
set enabled=yes –>> to make ip web proxy enable
set src-address=0.0.0.0 –>> to make source address to access web proxy will allow
set port=8080 –>> to make port for web proxy
set hostname=”proxy.war.net.id” –>> setting for visble hostname web proxy
set transparent-proxy=yes –>> make transparant proxy enable
set parent-proxy=0.0.0.0:0–>> if we used parent proxy x
set cache-administrator=”support@somethink.org” –>> make set administrator info support
set max-object-size=4096KiB –>> maximal object can cacth with the proxy server
set cache-drive=system –>> where drive position that cache wil be saved
set max-cache-size=unlimited –>> maximal harddrive we used for cache
set max-ram-cache-size=unlimited –>> maximal ram we used for cache

2. add nat for redirect port for squid to make transparant

/ip firewall nat add chain=dstnat protocol=tcp dst-port=80 action=redirect to-ports=8080 –>> setting can redirect port 80 to 8080 for proxy server
/ip firewall nat add chain=dstnat protocol=tcp dst-port=3128 action=redirect to-ports=8080 –>> setting can redirect port 3128 to 8080 for proxy server
/ip firewall nat add chain=dstnat protocol=tcp dst-port=8080 action=redirect to-ports=8080 –>> setting can redirect port 8080 to 8080 for proxy server

Good Luck

regard