Cara setting transparent proxy clearos dalam mode standalone

Topologi :

modem ----------- Router ------------ Switch ---------- Client.....

...................................|..............................................

...................................|..............................................

....................ClearOS proxy server....................................

......................(Standalone mode).....................................

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Alokasi IP

WAN Mikrotik 115.124.xx.xx

LAN Mikrotik 192.168.1.254

PROXY Mikrotik 192.168.3.2

ClearOS 192.168.3.1

Kebetulan saya menggunakan Mikrotik RB450

OK kita setting interfaces dan ip untuk mikrotik terlebih dahulu

/interface ethernet

set 0 arp=enabled auto-negotiation=yes bandwidth=unlimited/unlimited comment=\

"" disabled=no full-duplex=yes mac-address=00:0C:42:3D:XX:XX master-port=\

none mtu=1500 name=WAN speed=100Mbps

set 1 arp=enabled auto-negotiation=yes bandwidth=unlimited/unlimited comment=\

"" disabled=no full-duplex=yes mac-address=00:0C:42:3D:XX:XX master-port=\

none mtu=1500 name=LAN speed=100Mbps

set 3 arp=enabled auto-negotiation=yes comment="" disabled=no full-duplex=yes \

mac-address=00:0C:42:3D:XX:XX mtu=1500 name=proxy speed=100Mbps

/ip address

add address=115.124.XX.XX/30 broadcast=115.124.xx.xx comment="" disabled=no \

interface=WAN network=115.124.XX.XX

add address=192.168.1.254/24 broadcast=192.168.1.255 comment="" disabled=no \

interface=LAN network=192.168.1.0

add address=192.168.3.2/30 broadcast=192.168.3.3 comment="" disabled=no \

interface=proxy network=192.168.3.0

Setelah kita set DNS,NAT untuk LAN

/ip firewall nat

add action=src-nat chain=srcnat comment="" disabled=no dst-address=0.0.0.0/0 \

out-interface=to_isp src-address=192.168.1.0/24 to-addresses=\

115.124.XX.XX to-ports=0-65535

/ip dns

set allow-remote-requests=yes cache-max-ttl=1w cache-size=2048KiB \

max-udp-packet-size=512 primary-dns=202.182.XX.XX secondary-dns=\

202.159.XX.XX

/ip dns static

add address=192.168.3.1 disabled=no name=proxy ttl=1d

Setting IP Address Client

misal untuk client1

IP : 192.168.1.1

netmask : 255.255.255.0

gateway : 192.168.1.254

dns1 : 192.168.1.254

dns2 : 202.182.XX.XX

Test client untuk Browsing seharusnya sudah bisa kalau belum bisa periksa kembali

setting di atas sampai client bisa browsing

OK selanjutnya persiapan untuk proxy

buat NAT di Mikrotik untuk Proxy

/ip firewall nat

add action=src-nat chain=srcnat comment="link proxy" disabled=no dst-address=\

0.0.0.0/0 out-interface=WAN src-address=192.168.3.0/30 to-addresses=\

115.124.XX.XX to-ports=0-65535

add action=dst-nat chain=dstnat comment="transproxy" disabled=\

no dst-port=80,8080 in-interface=to_swicht protocol=tcp src-address=\

!192.168.3.1 to-addresses=192.168.3.1 to-ports=3128

setelah itu install CLearOS

install ClearOS Server Standalone Mode - No Firewall

edit file /etc/firewall, cari dan ganti parameter berikut

SQUID_TRANSPARENT="on"

[root@proxy etc]# cat firewall | grep SQUID

SQUID_TRANSPARENT="on"

edit file /etc/resolv.conf, tambahkan nameserver (DNS) ISP anda

[root@proxy etc]# cat resolv.conf

nameserver 202.182.xx.xx

pastikan gateway proxy sudah ke IP PROXY Mikrotik, jika menggunakan ClearOS

sudah ada di menu network->ip setting klik edit ikuti wizardnya dan jangan

lupa gateway dan dns nya sudah benar, untuk memastikan bisa lihat file ifcfg-eth0

ada di direktory /etc/sysconfig/network-scripts

[root@proxy network-scripts]# cat ifcfg-eth0

DEVICE=eth0

TYPE="Ethernet"

ONBOOT="yes"

USERCTL="no"

BOOTPROTO="static"

IPADDR="192.168.3.1"

NETMASK="255.255.255.0"

HWADDR="00:50:da:93:4c:53"

GATEWAY="192.168.3.2"

Jalankan Web Proxy ada di menu

gateway -> Web Proxy

klik start dan buat automatic

Jangan lupa buat acl nya dulu yah di Squid bisa dari webconfignya kok

Sekarang Proxy kita sudah siap di uji coba