mirror of
https://github.com/opnsense/docs
synced 2024-11-09 01:10:33 +00:00
123 lines
3.4 KiB
ReStructuredText
123 lines
3.4 KiB
ReStructuredText
=============
|
||
Caching Proxy
|
||
=============
|
||
|
||
.. image:: images/forward_proxy.png
|
||
|
||
OPNsense is equipped with a fully featured forward caching (transparent) proxy.
|
||
A caching proxy reduces bandwidth and improves response times by caching and
|
||
reusing frequently-requested web pages. The Access Control Lists can be utilized
|
||
for user authentication and or as (category based) web filter.
|
||
|
||
Features include:
|
||
|
||
* Multi Interface Support
|
||
* Transparent Mode (including SSL/HTTPS)
|
||
* ICAP Support for Anti Virus/Malware Engine
|
||
* HTTP Proxy
|
||
* FTP Proxy
|
||
* User Authentication
|
||
* Access Control Lists (valid for both http(s) and ftp)
|
||
* (Compressed) Blacklist
|
||
* Category Based Web Filtering
|
||
* Can be combined with traffic shaper
|
||
|
||
--------------
|
||
Authenticators
|
||
--------------
|
||
User authentication can be done using OPNsense standard and built-in authenticators.
|
||
Currently these include:
|
||
|
||
* LDAP (incl. Microsoft Active Directory)
|
||
* Radius
|
||
* Local user manager
|
||
* No authentication
|
||
|
||
--------------
|
||
Access Control
|
||
--------------
|
||
OPNsense supports fine grained access control, base upon:
|
||
|
||
* Subnets
|
||
* Ports
|
||
* MIME types
|
||
* Banned IP’s
|
||
* Whitelists
|
||
* Blacklists
|
||
* Browser/User Agents
|
||
|
||
------------------
|
||
Traffic Management
|
||
------------------
|
||
The proxy can be combined with the traffic shaper and take full advantage of its
|
||
shaping features. Additionally it includes its own options:
|
||
|
||
* Maximum download size
|
||
* Maximum upload size
|
||
* Overall bandwidth throttling
|
||
* Per host bandwidth throttling
|
||
|
||
|
||
-------------------------
|
||
Category Based Web Filter
|
||
-------------------------
|
||
No need for additional plugins, such as squidGuard - as OPNsense has built-in
|
||
category based web filter support. Main features include:
|
||
|
||
* Fetch from a remote URL
|
||
* Supports flat file list and category based compressed lists
|
||
* Automatically convert category based blacklists to squid ACLs
|
||
* Keep up to date with the built-in scheduler
|
||
* Compatible with most popular blacklist
|
||
|
||
----------------
|
||
Transparent Mode
|
||
----------------
|
||
The transparent mode means all requests will be diverted to the proxy without any
|
||
configuration on your client. Transparent mode works very well with unsecured http
|
||
requests, however with secured (SSL) HTTPS connection the proxy will become a
|
||
man-in-the-middle as the client will "talk" to the proxy and the proxy will encrypt
|
||
the traffic with its master key that the client is required to trust.
|
||
|
||
.. Warning::
|
||
Using a transparent HTTPS proxy can be a dangerous practice and may not be
|
||
allowed by the services you use, for instance e-banking.
|
||
|
||
|
||
------------
|
||
WPAD And PAC
|
||
------------
|
||
If a transparent proxy cannot be used, OPNsense still supports automatic proxy
|
||
configuration via WPAD / PAC.
|
||
|
||
.. Warning::
|
||
WPAD via DNS requires the web interface to run on the default HTTP port
|
||
(TCP/80) which is also a security risk (MITM attacks). In such cases you
|
||
should proxy the connection or avoid configuring the applicance from an
|
||
untrusted network.
|
||
|
||
-----------------------
|
||
Configuration / How-tos
|
||
-----------------------
|
||
More information on how to utilize OPNsense's proxy service can be found in:
|
||
|
||
Proxy Basic Setup
|
||
-----------------
|
||
:doc:`how-tos/cachingproxy`
|
||
|
||
Setup Web Filtering
|
||
-------------------
|
||
:doc:`how-tos/proxywebfilter`
|
||
|
||
Setup Transparent Mode (including SSL)
|
||
--------------------------------------
|
||
:doc:`how-tos/proxytransparent`
|
||
|
||
Setup WPAD/PAC
|
||
--------------
|
||
:doc:`how-tos/pac`
|
||
|
||
Setup ICAP Anti Virus/Malware Engine
|
||
------------------------------------
|
||
:doc:`how-tos/proxyicapantivirus`
|