Squid is a FOSS package licensed under the GNU GPL and is primarily used as a web proxy server and cache.

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Squid forward traffic to another proxy with authentication

I want to use Squid locally on my computer to forward all traffic to a parent Squid proxy which uses BASIC authentication. The aim is to not store my password on every configuration file that needs ...
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40 views

Two transparent gateway using squid return 403

I have two linux gateway using squid as transparent proxy. When I using them individually, everything is fine. But when I using them in the same network, every request from browser will return 403. ...
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1answer
173 views

route apache traffic through squid proxy server

i am using squid as proxy server for blocking patterns in a url (like: block .jpg,.bmp, etc). now i want to route the whole traffic from my 2nd server (which runs apache) through the proxy server. so ...
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1k views

Squid HTTPS Tunnelling using CONNECT very slow

I use squid on my network to cache content. I launch chrome with a command line switch that tells it to use the proxy. For the most part this works great as squid caches a large amount of content ...
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1answer
99 views

Set up squid as a reverse proxy behind a transparent proxy

I have a question about setting up squid as a reverse proxy behind a transparent / forward proxy. Basically, what I am looking for is whether it's possible to set up (B) in the following: Client (A) ...
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1answer
166 views

Local transparent proxy with squid and dansguardian

I am having trouble setting up a local web cache and filtering system using squid and dansguardian. It works perfectly when the browser is configured to use the proxy box's ip (192.168.1.2) but I ...
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1answer
55 views

replace web traffic content with squid

I am using squid to block certain types of traffic to reduce band width, I have so far blocked adds, flash applications, video streaming and other such things. when a website or an advertisement ...
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3answers
127 views

Transparent proxy for HTTPS traffic

I'm looking for a proxy to intercept HTTP traffic na pass through HTTPS traffic. Burp can do that with SSL pass through. With that option, SSL traffic isn't modified or capture, but just tunneled. I ...
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2answers
208 views

Transparent proxy and HTTPS with squid

Is is possibile to use a transparent proxy to filter some domains without a man-in-the-middle approach? I would like to guarantee the certificate verification and user privacy, by other hand, I want ...
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149 views

Squid accessing issues with allowed IP's

I have configured squid and list of allowed ip's I can see logs in access.log for 192.168.1.16 IP now i want to find MAC address of that ip as someone is mis-using this IP. Now i want to get MAC ...
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168 views

Caching Docker (Cloudfront) images with Squid

I have a Squid server setup with ssl-bump caching SSL resources used by Docker but I'm having issues trying to get it to cache requests to Cloudfront, for example: 1415056176.733 190419 172.17.0.40 ...
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38 views

squid drops connections to ip addresses, but it passes the connection o the domain addressess just fine

When some program tries to connect to some ip address, it gives me this in the log file: 1414709903.045 0 192.168.0.82 TCP_MISS/500 4429 GET ...
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1answer
125 views

How to customized Squid access log to show upload files just as its recording download files

Just wondering , is there a way to check upload content or any data related to uploads using squid logs ? Any plugin or enhancement? any other viable option. grateful for any advice . Thanks..
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1answer
254 views

Display a message to all Squid Proxy users

I have a production squid proxy that I am about to decommission soon. The proxy has about 400 users mainly at remote location. We have purchased a new proxy appliance and it is ready for use. At this ...
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40 views

Proxy all requests to domain.tld

Here's the situation: I want to direct all requests to to a proxy server. One idea I had was to force the DNS server to respond to the request for domain.tld to the server running the proxy server ...
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1answer
372 views

Squid proxy keberos active directory authenticate

I'm using ubuntu server 14.04 with a Windows 2008 Server which has Active directory and the DNS role setup for this task. I've setup the domain correctly as far as I can make out with Pbis-open with ...
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1answer
92 views

Web caching to reduce bandwidth on low speed connections [closed]

On my company we have an ISA Server proxy we use to access internet, this server is managed by external administrators and we do not have access to modify its configurations. Lately we have been ...
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2answers
542 views

Squid proxy performing extremely slow and sometimes doesn't work at all

I recently installed Squid on my desktop machine for testing purposes. I didn't edit the config whatsoever, and just pointed firefox at the proxy to see if it was working. Pages take an insanely long ...
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1answer
197 views

SQUID not caching anything

I am trying to setup squid to cache downloading of one of my programs , unfortunately I found out I am not caching anything, my logs looks like: 1414421675.540 1059 127.0.0.1 TCP_MISS/204 288 GET ...
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1k views

pfsense reverse proxy + HTTPS/SSL interception

I have pfSense 2.1.5 and squid3-dev 3.3.10 configured as reverse proxy for internal http web server and server proxy (port 3128).It works. Activating HTTPS/SSL interception (Enable SSL filtering) on ...
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1answer
371 views

Squid3 never cache image files

I just installed 3.3.8 on Ubuntu 14.04. However I found that squid3 never caches any statics images file at all. Here is my squid3.conf auth_param digest program /usr/lib/squid3/digest_file_auth -c ...
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1answer
1k views

Redirect a HTTPS CONNECT using squid

I have deployed squid 3.4.8. It's primary purpose is to redirect users to internal landing pages since no Internet access is permitted or enabled on this network. Instead of letting browsers time ...
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1answer
124 views

Squid proxy redirect to search if unable to resolve hostname

When not using a proxy, a hostname that does not exist results in an NX returned from the DNS server, and the web browser (Firefox in this case) is smart enough to attempt a search instead. However, ...
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831 views

Squid3 TCP_DENIED/403 with TIMEOUT_FIRST_UP_PARENT

I have the following hierarchy: P1 and P2 are configured as: 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 acl localnet src ...
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115 views

Allow some destination ip/hostnames to bypass acl in squid

We have setup squid for an office environment. We are blocking many multimedia file types like mp3, mp4 etc to prevent bandwidth misuse. Now we have setup media streaming server on our gateway server ...
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3answers
47 views

Change Packet Dynamically with Squid

Is there any option in Squid that allow me to change packets dynamically? For ex: I want to send all packet that comming to Squid to my PHP code and change the packet with PHP Dynamically and resend ...
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1answer
26 views

cache_dir and some hardening squid

Suppose i'm going to define multiple cache_dir such as : cache_dir ..... # disk 1 cache_dir ..... # disk 2 cache_dir ..... # disk 3 Question: Do i need to define maximum_object_size and ...
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1answer
123 views

how to make squid revere proxy with authentication send remote_user header

OS CentOS 6.4 - squid 3.1 I currently have squid running as a reverse proxy, performing NTML authentication succesfully. This is working as expected. If I enter valid AD username and password, it ...
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1answer
560 views

Automatic Proxy Discovery wpad.example.com doesn't work

I'm trying to setup an automatic method for discovery my Squid proxy on the local network, by setting the browsers with "Automatic detection". The proxy is fine and works if I specify the IP:Port ...
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0answers
949 views

transparent proxy with squid3 dansguardian iptables and one nic

I am attempting to filter my home internet connection through transparent proxy (squid3) and dansguardian . I have the following setup: http://i.stack.imgur.com/5Z3DP.png My Ubuntu Server is ...
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1answer
67 views

I want to proxy only HTTP but I'm not sure what to do with HTTPS traffic

I have a DNS server that resolves all traffic to my Squid server that will proxy all HTTP traffic transparently (it must be transparent or it will drop a invalid url error) which works great. The ...
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1answer
129 views

squid3 blocking access to particular IP not working

I have installed a squid3 on debian and using it as a proxy server. after some time I want to block the particular user using IP address. So I have defined this rule in my squid.conf file but it is ...
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1answer
159 views

How to exclude a particular domain entry from access.log in squid3 on debian

I have proxy server setup running squid proxy and Squid Cache: Version 3.1.20 on debian, I am doing some log analysis from squid's log file i.e /var/log/squid3/access.log. I dont want a entry of ...
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1answer
307 views

How does a proxy server handle non-http traffic?

I have an application that makes an un-secure connection over a non-http port to a server daemon. We use this tool internally. There might be occasion for some of our users to work outside our ...
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187 views

How can I limit total quota using squid without authentication for per user

I am having Raspberry Pi running Raspbian, I have configured it as a wifi hotspot using hostapd and dhcpd, I have configured transparent squid proxy server on it. Now all traffic goes through my proxy ...
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155 views

Skype through squid not working

I am trying to connect skype through a squid proxy server for a customer. However they don't specify a gateway to client PC's. They are using skypes latest version and we have updated squid to the ...
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1answer
52 views

Squid separate access.log by http_port [closed]

I've AP 2 interface they're ip 192.168.200.1, 192.168.201.1 HTTP access from each interface i'm redirect it to difference squid port 192.168.200.0/24 ==> 192.168.200.1:3129 192.168.201.0/24 ...
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1answer
170 views

How to make Squid log url and forward traffic without proxying?

I want to use squid to listen on port 80 and log all url requests and simply forward it to original destination without changing anything. How to achieve that?
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107 views

Squid configuration to allow all https and block all else to and from localhost

I'm attempting to use squid to mock something on my local windows machine for testing purposes. I need to allow local applications and browsers to connect to a tomcat server running on localhost, ...
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85 views

Tune Squid to only cache URLs if response time is slow

I'm fine-tuning my Squid server to only cache URLs if the upstream server response time is slow. For all other calls, it acts as a transparent proxy. Has anyone done this before? Is there a way to ...
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0answers
38 views

Restricting proxy access to certain ldap users

I'd like to restrict access to a squid proxy server to certain ldap users. Since the ldap backend I use is zimbra, I intruduced a new Class of Service simply called squidusers and use that for the ...
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0answers
93 views

Squid Proxy: How to link inbound IPv4 ports to outbound IPv6 Addresses

I'm using Squid and I need to accept inbound connections on an ipv4 address using an ipv4 port that each user account link to an specific outbound ipv6 address. So for example I want to open port 4000 ...
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1answer
242 views

Squid, WCCP and Transparent HTTPS

Sorry if this has been answered but i just can't get it to work for me. We would like to log all HTTPS & HTTP requests but not to use Squid-in-the-middle. We would like the proxy to connect the ...
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0answers
2k views

Transparent Proxy squid TCP_MISS/503 Error in all pages

I m trying to make a squid proxy server with to work as a transparent proxy server, and i m facing some issues that i m unable to figure out the reasons. The setup i m using is several VLAN's with ...
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1answer
922 views

ssl_crtd helpers are crashing too rapidly in squid

I am using the sslBump and Dynamic SSL Certificate Generation features of squid, below is my configuration for the sslBump sslcrtd_program /usr/lib64/squid/ssl_crtd -s ...
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152 views

Transparent bridge proxy between gateway with DMZ and router

I'm attempting to build a transparent bridged proxy using ebtables, bridge-utils and squid3 as seen in the following article. ...
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0answers
326 views

Squid Proxy: ACL error on request by curl

my squid.conf(squid3) acl localnet src 192.168.1.0/255.255.255.0 acl localweb src 192.168.199.0/255.255.255.0 http_port 3128 transparent http_access allow localnet http_access allow localweb my ...
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0answers
42 views

Squid limit all user to 128kbit/s

I have a very odd behaviour with my squid server. It limits every client to a bitrate of exactly 3,2 Mbit/s... To troubleshoot it, I've tried to set the bitrate limit to unlimited and to 128kbit/s ...
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0answers
77 views

Squid not routing traffic, missing domain

I have a squid3 proxy setup and would like to route it's traffic although when I try and connect I get this error: The following error was encountered while trying to retrieve the URL: ...
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136 views

Proxy / Squid 2.7 / Debian Wheezy 6.7 / lots of TCP Timed-out

I'm facing a lot of TCP timed-out on a busy cache server and here below my sysctl.conf configuration as well as an output of netstat -st Kernel 3.2.0-4-amd64 #1 SMP Debian 3.2.57-3 x86_64 GNU/Linux ...