I. Skenario:
Internet Router — eth0:192.168.0.11:cumi.bachem.local:eth1:192.168.10.1 — client
II. Setting Statik IP Address,DNS, etc
# system-config-network-tui
or
-Via CLI, setting ip address eth0
# cd /etc/sysconfig/network-scripts/
# vi ifcfg-eth0
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DEVICE=eth0 HWADDR=32:E8:71:6C:BF:E7 NM_CONTROLLED=yes ONBOOT=yes IPADDR=192.168.0.11 BOOTPROTO=static NETMASK=255.255.255.0 TYPE=Ethernet GATEWAY=192.168.0.1 IPV6INIT=no USERCTL=no |
-Setting ip address eth1
# cd /etc/sysconfig/network-scripts/
# vi ifcfg-eth1
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DEVICE=eth1 HWADDR=e2:00:34:d8:3b:6f NM_CONTROLLED=yes ONBOOT=yes IPADDR=192.168.10.1 BOOTPROTO=static NETMASK=255.255.255.0 DNS2=192.168.10.6 TYPE=Ethernet DNS1=192.168.10.5 IPV6INIT=no USERCTL=no |
-Setting DNS:
# vi /etc/resolv.conf
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nameserver 192.168.10.5 nameserver 192.168.10.6 |
-Setting Hostname:
# vi /etc/sysconfig/network
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NETWORKING=yes HOSTNAME=cumi.tahubachem.net |
-Setting /etc/hosts
# vi /etc/hosts
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127.0.0.1 localhost localhost.localdomain localhost4 localhost4.localdomain4 ::1 localhost localhost.localdomain localhost6 localhost6.localdomain6 192.168.10.1 cumi.tahubachem.net cumi |
III. Update Server
# yum –y update
IV. Setting NAT/Sebagai Router/Gateway
-Enable IP forwarding
# sysctl -w net.ipv4.ip_forward=1
-To enable it in system startup, edit the file /etc/sysctl.conf
# vi /etc/sysctl.conf
and set
net.ipv4.ip_forward = 1
-Enables packet forwarding by kernel
# echo 1 > /proc/sys/net/ipv4/ip_forward
OR edit /proc/sys/net/ipv4/ip_forward , change 0 to 1 then save
-Setting iptables untuk NAT
# iptables -A FORWARD -i eth1 -o eth0 -j ACCEPT
# iptables -I INPUT -i eth1 -p tcp --dport 3128 -j ACCEPT
# iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE
# service iptables save
# service iptables restart
III. Install & Setting Squid
-Install Paket Squid 3.1 from default CentOS 6 repo
# yum -y install squid
-Konfigurasi Squid
# cp /etc/squid/squid.conf /etc/squid/squid.conf.asli
# vi /etc/squid/squid.conf
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# squid.conf 3.1 # ------------- # OPTIONS FOR AUTHENTICATION # -------------------------- #auth_param basic program /usr/lib64/squid/squid_ldap_auth -b "dc=tahubachem,dc=local" -f "uid=%s" -h 192.168.10.6 #auth_param basic children 5 #auth_param basic realm Squid proxy-caching web server #auth_param basic credentialsttl 2 hour #authenticate_ip_ttl 5 minutes # ACL acl manager proto cache_object acl localhost src 127.0.0.1/32 ::1 acl to_localhost dst 127.0.0.0/8 0.0.0.0/32 ::1 # Example rule allowing access from your local networks. # Adapt to list your (internal) IP networks from where browsing # should be allowed #acl localnet src 10.0.0.0/8 # RFC1918 possible internal network #acl localnet src 172.16.0.0/12 # RFC1918 possible internal network acl localnet src 192.168.10.0/24 # 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 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 Safe_ports port 631 # cups acl Safe_ports port 10000 # webmin acl Safe_ports port 873 # rsync acl Safe_ports port 901 # SWAT acl Safe_ports port 5050 # YM acl Safe_ports port 110 # POP3 acl Safe_ports port 25 # SMTP acl Safe_ports port 2095 2096 # webmail from cpanel acl Safe_ports port 2082 2083 # cpanel acl CONNECT method CONNECT acl QUERY urlpath_regex cgi-bin \? #ACL LDAP auth: #acl ldapauth proxy_auth REQUIRED #ACL one ip = one user login #acl one_ip_access max_user_ip -s 1 # ACL file download acl downloadfile url_regex -i ftp .001 .002 .003 .004 .005 .006 .007 .008 .009 .010 .3gp .avi .bin .cab .cda .div .divx .deb .doc .docx .exe .flv .gif .gz .ico .iso .jpeg .jpg .midi .mkv .mov .mp3 .mp4 .mpe .mpeg .mpg .msi acl downloadfile url_regex -i ftp .nrg .ogg .pdf .png .ppt .pptx .qt .ram .rar .raw .rm .rpm .swf .tar .tar.bz2 .tar.gz .tiff .vqf .wav .wmv .xls .xlsx .x-flv .zip # Recommended minimum Access Permission configuration: # Only allow cachemgr access from localhost http_access allow manager localhost http_access deny manager # 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 # 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 # Transparent Squid port 3128 # http_port 3128 transparent http_port 3128 intercept #No transparent,if using wpad.dat will tell web browser the proxy address & port #http_port 3128 # We recommend you to use at least the following line. hierarchy_stoplist cgi-bin ? # -------------------- # MEMORY CACHE OPTIONS # -------------------- cache_mem 16 MB maximum_object_size_in_memory 32 KB memory_replacement_policy heap GDSF # --------------------------- # cache_dir # --------------------------- ## option cache have a methode for know the configuration, ## normally we use 80% for the /cache all, but never ## give a good performancy, so for the save configuration we ## use 50% for /cache ## x=50% for the /cache in KB ##(ex 50% X 12GB, so we use 6GB=~6,000,000KB) ## y=Average object size (use 13KB) ## z= 256 -> (((x / y) / 256) / 256) * 2 –this the method ## ex, we use 6 GB for /cache (50% ), so: ## 6,000,000 / 13 = 461538.5 / 256 = 1802.9 / 256 = 7 * 2 = 14 ## So the row of cache_dir : cache_dir ufs 6000 14 256 # --------------------------- cache deny QUERY cache_replacement_policy heap LFUDA cache_dir aufs /var/spool/squid 6000 14 256 minimum_object_size 0 KB maximum_object_size 64 MB cache_swap_low 98 cache_swap_high 99 # LOGFILE OPTIONS # --------------- access_log /var/log/squid/access.log squid cache_log /var/log/squid/cache.log #cache_store_log /var/log/squid/store.log cache_store_log none logfile_rotate 10 # OPTIONS FOR TROUBLESHOOTING # --------------------------- # Leave coredumps in the first cache dir coredump_dir /var/spool/squid # OPTIONS FOR URL REWRITING # ------------------------- # Options for squidGuard #url_rewrite_program /usr/bin/squidGuard -c /etc/squid/squidGuard.conf # OPTIONS FOR TUNING THE CACHE # ---------------------------- # 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 refresh_pattern -i \.(gif|png|jpg|jpeg|ico)$ 10080 90% 43200 refresh_pattern -i \.(iso|avi|wav|mp3|mp4|mpeg|mpg|swf|flv|x-flv)$ 10080 90% 43200 refresh_pattern -i \.(deb|rpm|exe|ram|bin|pdf|ppt|pptx|doc|docx|xls|xlsx|tiff)$ 10080 90% 43200 refresh_pattern -i \.(zip|bz2|gz|arj|lha|lzh|tar|tgz|cab|rar)$ 10080 95% 43200 refresh_pattern -i \.(html|htm|css|js|php|asp|aspx) 1440 40% 40320 refresh_pattern -i download.windowsupdate.com/.*\.(cab|exe|ms[i|u|f]|asf|wm[v|a]|dat|zip) 4320 80% 43200 reload-into-ims refresh_pattern -i download.microsoft.com/.*\.(cab|exe|ms[i|u|f]|asf|wm[v|a]|dat|zip) 4320 80% 43200 reload-into-ims refresh_pattern -i update.microsoft.com/.*\.(cab|exe|ms[i|u|f]|asf|wm[v|a]|dat|zip) 4320 80% 43200 reload-into-ims refresh_pattern -i windowsupdate.com/.*\.(cab|exe|ms[i|u|f]|asf|wm[v|a]|dat|zip) 4320 80% 43200 reload-into-ims refresh_pattern -i windowsupdate.microsoft.com/.*\.(cab|exe|ms[i|u|f]|asf|wm[v|a]|dat|zip) 4320 80% 43200 reload-into-ims refresh_pattern -i ntservicepack.microsoft.com/.*\.(cab|exe|ms[i|u|f]|asf|wm[v|a]|dat|zip) 4320 80% 43200 reload-into-ims refresh_pattern -i wustat.windows.com/.*\.(cab|exe|ms[i|u|f]|asf|wm[v|a]|dat|zip) 4320 80% 43200 reload-into-ims # TIMEOUTS # -------- forward_timeout 2 minutes connect_timeout 1 minute read_timeout 10 minutes request_timeout 3 minutes persistent_request_timeout 1 minutes client_lifetime 1 day half_closed_clients off shutdown_lifetime 10 seconds # ADMINISTRATIVE PARAMETERS # ------------------------- cache_mgr triadi80@gmail.com cache_effective_user squid visible_hostname cumi.tahubachem.net # DELAY POOL PARAMETERS # --------------------- # 1 byte = 8 bits # 1 kilobyte (K / Kb) = 2^10 bytes = 1,024 bytes # 1 megabyte (M / MB) = 2^20 bytes = 1,048,576 bytes # 1 gigabyte (G / GB) = 2^30 bytes = 1,073,741,824 bytes # 1 terabyte (T / TB) = 2^40 bytes = 1,099,511,627,776 bytes # 1 petabyte (P / PB) = 2^50 bytes = 1,125,899,906,842,624 bytes # 1 exabyte (E / EB) = 2^60 bytes = 1,152,921,504,606,846,976 bytes # 512 Kbps = 64 Kbytes = 64000 bytes # 384 Kbps = 48 Kbytes = 48000 bytes # 256 Kbps = 32 Kbytes = 32000 bytes # 128 Kbps = 16 Kbytes = 16000 bytes # 64 Kbps = 8 Kbytes = 8000 bytes delay_pools 2 # aturan 1, tidak ada pembatasan delay_class 1 2 delay_parameters 1 -1/-1 -1/-1 # aturan 2,after download 500000 bytes(500KB),download become 15000 bytes/s(15KB/s) delay_class 2 2 delay_parameters 2 -1/500000 15000/500000 delay_access 2 allow downloadfile delay_access 2 deny all delay_access 1 deny downloadfile delay_access 1 allow all # OPTIONS INFLUENCING REQUEST FORWARDING # -------------------------------------- prefer_direct off always_direct allow QUERY #always_direct allow ipserver always_direct deny all # DNS OPTIONS # ----------- allow_underscore on dns_retransmit_interval 2 seconds dns_timeout 1 minutes dns_nameservers 192.168.0.1 192.168.1.1 hosts_file /etc/hosts ignore_unknown_nameservers on ipcache_size 1024 ipcache_low 90 ipcache_high 95 fqdncache_size 1024 # MISCELLANEOUS # ------------- forwarded_for on uri_whitespace strip |
-Set Permision Squid
# chown -R squid:squid /var/log/squid/
-Membuat direktori cache squid, make squid run at startup
# squid -z
# chkconfig squid on
# service squid restart
-Setting iptables Transparent Proxy squid
# iptables -t nat -A PREROUTING -i eth1 -p tcp --dport 80 -j REDIRECT --to-port 3128
# service iptables save
# service iptables restart
References:
https://guammie.com/donovan/2012/02/15/transparent-squid-3-1-19-on-centos-6-2-vm/
http://www.squid-cache.org/Versions/v3/3.1/cfgman/
http://gilalinux.blogspot.com/2011/01/squid-3110-on-slackware-131.html
