Proxy Server Install and Configure

4.1 Create Router

 Step 1:

# vim /etc/sysctl.conf

 net.ipv4.ip_forward = 1

Step 2:

run this command

 # sysctl -p

 

 4.2 Squid Configuration

 #apt-get install squid

Minimum Configuration:

# vim /etc/squid/squid.conf

edit       #http_port 8080          [default port 3128 ]

# http_port 8080 transparent      [transparent help to force using proxy without putting proxy IP on browser]

#cache_mem 8 MB

#cache_dir ufs   /var/spool/squid 100 16 256     [or squid3]

 

acl localhost src 127.0.0.1/32

acl to_localhost dst 127.0.0.0/8

add       acl our_network src 192.168.200.0/24

 

Squid	Squid3
Log : /var/log/squid/access.log Cache location : /var/spool/squid/	Log : /var/log/squid3/access.log Cache location : /var/spool/squid3/

 

In the part “# Recommended minimum configuration:”

 

http_access allow localhost

add     http_access allow our_network

http_access deny all

 

save & exit (Esc :wq!)

# /etc/init.d/squid restart

4.3 Firewall

 #vim /etc/init.d/iptables

iptables -F

iptables -t nat -F

iptables -P INPUT ACCEPT

iptables -P OUTPUT ACCEPT

iptables -P FORWARD ACCEPT

#### NAT Table

iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE

iptables -t nat -A PREROUTING -p TCP -s 192.168.49.0/24 --dport 80 -j REDIRECT --to-port 8080

 

#### FORWARD chain

iptables -A FORWARD -s 192.168.49.0/24 -p udp --dport 53 -j ACCEPT

 

save & exit (Esc :wq!)

 # /etc/init.d/iptables