SQUID: How to disable authentication?

Question

I have a working Squid with authentication. How do I temporarily disable authentication? Can I just comment out the following lines below from squid.conf:

acl ncsa_u

Answer 1

This worked for me, only defined IP allowed to use squid

######################## Begin SQUID Config ########################
dns_v4_first on
dns_nameservers 8.8.8.8 8.8.4.4
# 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 Safe_ports port 1-65535 # unregistered ports
acl allowed_user1 src  182.0.0.0/12  all
acl allowed_user2 src  182.1.0.0/12 all
acl allowed_user3 src  114.120.0.0/12  all
acl allowed_user4 src  114.124.0.0/12  all
acl allowed_user5 src  114.125.0.0/12  all
acl allowed_user6 src  114.127.0.0/12  all
acl allowed_user7 src  202.3.0.0/12  all
acl CONNECT method CONNECT
http_port 8080
http_access allow allowed_user1
http_access allow allowed_user2
http_access allow allowed_user3
http_access allow allowed_user4
http_access allow allowed_user5
http_access allow allowed_user6
http_access allow allowed_user7

# visible_hostname 192.168.1.1
### disable cache ###
cache deny all
### Anonymizing traffic ###
forwarded_for delete
request_header_access X-Forwarded-For deny all
request_header_access Via  deny all
############## END squid3 CONFIG ###################