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 intercept proxy stuck with forwarding loop

I'm trying to set up a debugging proxy using Squid, mainly to test our own client communications library for various proxy types (one possibility with our client, is to connect to an external ...
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488 views

Squid Segmentation Fault?

I'm currently fixing an issue with one of our production servers. The issue is related to squid not able to run properly. When I try to run service squid start/stop, it throws an error: 2015/03/11 ...
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3answers
126 views

How do I configure all clients use proxy with out making changes to thier configuration

I am looking to configure a content filter for my network. I have squidgaurd configurared and working. I would like to have all clients use it. This includes clients I have no control over (BYOD ...
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452 views

Kerberos keytab permissions

Can you share some thoughts on whether a Kerberos keytab should be readable only by root - under all circumstances? Or are there exceptions to this rule? I am setting up a Squid proxy on Debian ...
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5k views

squid transparent proxy for https / ssl trafic

I am trying to configure squid as transparent proxy , I followed below steps to configure Downloaded squid3.5 from the website, As squid3.1 will not support for ssl bump ./configure ...
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1answer
226 views

Can squid work as reverse proxy server for ftp, pop3 and smtp [closed]

OS is Ubuntu 14.04 Can squid work as reverse proxy server for ftp, pop3 and smtp? I need a server can work as reverse proxy server mode to proxy the http and ftp. I configure quid3 but I find it can ...
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1answer
818 views

How to Force Client To Browse Internet Through Squid Proxy

I am using Windows Server 2012 in which i have share internet throw NAT to secondary lan card using Routing and remote service and now the problem is that when my client are browsing through proxy ...
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1answer
73 views

transparent proxy (SSL error)

Right now we are having transparent proxy in our network environment. we have been set proxy settings to browsers in all systems. While accessing the https sites in browsers no issue but few of ...
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1answer
144 views

Squid problems with iptables

I've installed and configured Squid on Fedora Server 21 with full updates. My proxy's IP is 145.130.33.133 with port 3128. First I modified my squid.conf with my rules and everything. On my laptop ...
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1answer
411 views

Squid SSL intercept works for most google sites but not www.google.com

I am able to access pretty much all of Google's .co.uk services now that I have configured squid to use SSL. I can also view my certificate information in the certificate being presented by Google. ...
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3answers
503 views

How to route all local trafic to Squid?

I have a working squid caching server which is accessile through 127.0.0.1:3128. I'm trying to route all my trafic(and if possible all my virtual machines) to 127.0.0.1:3128. I'm using vagrant and ...
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1answer
528 views

Hide squid in the header

I have a squid server installed, and I'd like it to be hidden when looking into the headers. First of all, I was getting both squid and the version on the headers: curl -i ip_address HTTP/1.0 400 ...
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1k views

Port 5228 on squid proxy server

I am using squid. I am trying to use the service for whatsapp which lies on port 5228. I wish to intercept 5228 for logging purposes. I already intercept 80, 8080, 443(ssl bump) on squid and it has ...
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1answer
403 views

Pfsense edge firewall .. DMZ … pfsense internal firewall + squid

i want to setup Pfsense on edge .. DMZ .. Internal PFSENSE with squid + squid Guard + lighttp for reporting... Internal Network. edge firewall will have 2 wans on loadbalancing & failover. ...
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2answers
2k views

Nginx as a proxy server for a local network

I'm currently using squid as a proxy server for my local network, but I'm not entirely satisfied with it. Is Nginx also suitable for use as a proxy server on a local network? Is it actively being used ...
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2answers
279 views

squid3 FAIL with cache_peer round-robin on 127.0.0.1 different port

I have 3 tunnels end to a Debian running squid3 (ports 9001 to 9003). At start of each tunnel runs a proxy. I try to load-balance those proxies this way: http_access allow all http_port 4128 ...
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200 views

Maximum number of HTTP request in squid proxy server

I have single Squid 3.4 instance running on Ubuntu Linux server. It is running in forward proxy mode and it is intercepting all HTTPS traffic. I am currently load testing squid setup. My setup is as ...
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1answer
789 views

Convert HTTP request to HTTPS through Apache and Squid

We have a service running internally that needs to upload files to S3 and all outgoing traffic currently routes through a Squid server I manage. The service that sends the files only supports HTTP but ...
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2answers
1k views

Squid load balancing and reverse proxy conflicts

I'm having difficulties configuring Squid 3.3 to do both "load-balancing" over multiple WAN links (using random ACLs + tcp_outgoing_address options) and to also have a "reverse proxy". It works just ...
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1answer
520 views

A way to whitelist (or blacklist) https connections

I am trying to create a captive portal using WifiDog, AuthPuppy and Squid. We want to provide access only to a selected number of resources, e.g 2-3 websites and the App Stores (Apple and Google). ...
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366 views

LVS + keepalived for load balancing transparent SQUID proxies

I need to load balance a number of SQUID proxies configured in transparent mode. Below is a simple diagram with one LB and SQUID boxes. ---------- | Client | ...
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177 views

Squid delays logs for some CONNECT requests for Chrome clients

I'm running Squid 3.3.8 on Ubuntu 14.04.1 as a regular proxy without any SSL intercept tricks. When I visit a HTTPS site on a client using the Internet Explorer, all CONNECT requests are logged just ...
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129 views

Creating a Remote Desktop Session from within an EC2 server, not to it

Ok, I'm having problems answering this because I can't figure out how to word it. Most questions about "remote desktop" and "ec2" focus on remoting into an ec2 instance, which isn't necessarily what I ...
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85 views

Strange entries in Squid3 access.log

My WiFi network for guests is transparently proxied by Squid3. There's now a girl from Indonesia with her Samsung GT-B5330 running Android 4.0.4, who gets blocked by "The requested URL could not be ...
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1answer
997 views

Squid: how to enable verification for SSL self-signed certificates

I'm using Squid 3.4.8 as a reverse proxy which is forwarding request to a specific server. The communication between Squid and the server is in HTTPS. The certificate used by the server is ...
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1answer
3k views

squid3 ssl bumping server-first with signed certificate

I'm trying to get Squid3.4 to do SSL Bumping with the server-first method. I followed this guide in alpinelinux. I'm working in explicit mode (browser configurer to Go to the proxy) and that works ...
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2answers
5k views

“Invalid URL” Squid 3.3.8 transparent proxy w/ SSL Bump

I am attempting to run the QLProxy Virtual Appliance with SSL Bump in a transparent proxy and cannot for the life of me get it to work. I keep receiving "Invalid URL" errors from Squid (version ...
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1answer
1k views

Allow Google apps and block consumer Google accounts using squid proxy

In my organisation, I am trying to allow the Google apps account and block consumer Google accounts using squid proxy. According to this link, Google says we can do it using following steps: 1. ...
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122 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
395 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. ...
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2answers
4k 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
293 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
540 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
66 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
790 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
678 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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336 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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1answer
414 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
2k 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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1answer
1k 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
194 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
3k 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
427 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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3k 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
785 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
5k 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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276 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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2k 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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127 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
51 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 ...