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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Differentiate response of Squid reverse proxy server and a web server behind the Squid

When we do a GET method request on a browser that is configured to use a proxy, can we tell from the response headers(Chrome Dev Tools) that the response came from a Squid proxy server and not the ...
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1answer
48 views

Squid proxy - Find urls that are consuming the most bandwidth

I have squid proxy setup on my home network (squid is running on Ubuntu server, 14.04). Right now our home internet usage is about 2TB per month. I would like to find out which sites/urls/domains are ...
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5 views

Squid no persistent connection with method OPTIONS

Hi all I have a problem I am using squid 3.1.19, the problem is that the use of the OPTIONS method does not create a persistent connection connectio:Keep - alive if not it returns me a connection: ...
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9 views

Is Sonicwall SSL Decryption and Inspection the same function as Using a Transparent Proxy and Swapping out the Certificate with Squid 3?

I was wondering if Sonicwall SSL Decryption and Inspection is the same function, mainly; swap out the issued SSL certificate and decrypt traffic while issuing a local SSL certificate to the calling ...
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27 views

Redirect locally generated HTTPS traffic through external proxy

I have a configuration like this: Internet | Public Zone | Private Zone IP x.x.x.x |<--- Forward Proxy / WebCache | <--- Linux Server (RedHat) ...
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2answers
41 views

Routing your Internet through openvpn and Squid Proxy

I am trying to setup a proxy to filter the internet traffic. In order to do so have arrived at the following combination Client -> Openvpn -> squidproxy -> internet Squid proxy and openvpn have been ...
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1answer
21 views

Squid and internet sharing proxy without configurations on the part of end users

We have several PCs all connected to a switch; What I need from Squid is to share the internet between everyone and at the same time gives me control over what PC can access to internet (password ...
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21 views

Forbid reviving dead peers in Squid

How, I'm using Squid v3.3.8 and I need to create HTTP rotating proxy server to send all requests through set of predefined proxies (I'm automatically updating squid config to update set of working ...
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14 views

Squid only loads half page

I have configured Squid on a VPS on DigitalOCean. I somehow got it to accept my requests but there is a new issue now. Whenever I try to load page using it than it only loads half of the page, what I ...
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10 views

Squid3 Access Denied error

I have set up a VPS on DigitalOCean and installed squid3. Here is the tail of the /etc/squid3/squid.conf file: acl myhost src 1.2.3.4 # 1.2.3.4 is replaced by my ip at whatismyipaddress.com ...
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1answer
38 views

Squid cache_peer round-robin algorithm not working as expected

I have number of peer-to-peer HTTP proxies and I need to distribute my requests among them evenly, so I added multiple cache_peer directives and set round-robin as peer selection algorithm. This is my ...
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35 views

Squid on a different host than gateway

I have Squid running on a dedicated VM. It has ip 192.168.1.5. The server running squid has only one NIC. The internet connection is connected to another (physical) server with two nics. The internal ...
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1answer
56 views

Azure ARM VM creation with Network Security Groups

I have a network with enabled Network Security Groups where I deny Outbound Port 80 and 443. All Outbound traffic is managed through a Squid Proxy. Now, I want to create a new Virtual Machine in this ...
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14 views

Squid multiple rules in an ACL to redirect certian traffic

We are part of a larger domain in which we manage a section of this domain. what I want to be able to do is setup a sort of filter "all sites heading to the over-all domain that aren't in our IP ...
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60 views

Squid takes a long time to get a response for HTTP requests, never hit neighbor cache

I am trying to install Squid in a sibling model by following these instructions. But when the client executes HTTP request it takes a long time to get response from the server. System model: ...
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11 views

Squid3 ACL using Linux credentials

I'm running Squid3 on my Ubuntu 14.04.3 server and have an ACL rule that only allows the 127.0.0.1 ip, ie local users. I access this through a ssh tunnel. However, I would like to tighten the ACL ...
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18 views

WCCP to Remote Cache Engine - Any limitations?

I am attempting to WCCP to a remote (cloud hosted) cache engine from an ASR 1900 series router that is performing NAT. According to my reading (which was mostly done on ASAs) the WCCP cache engine ...
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1answer
57 views

Squid - Forward Port 80 to SquidServer:3128

I have a -squid ProxyServer (Hostname: SquidProxy - 10.160.54.1 SM /16) -and a Client (Client1 10.160.55.1 SM /16) At the Client i have configured the proxy in /etc/sysconfig/proxy with the ...
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21 views

Bind the ip adresses with the hosts using socat command

I have squid proxy installed in my server, and I want to bind the ip adresses with the hosts I want to connect to them. How can I do it with socat command? Example : prox_IP : 1.1.1.1 proxy_port : ...
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35 views

How to configure Squid 3.4 to only handle IPv6 outgoing connections

When you configure Squid3.1 with tcp_outgoing_address to any IPv6 address, then the proxy server will only connect to IPv6 enabled sites. It won't fallback to IPv4. This is good for testing IPv6 ...
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1answer
19 views

Redirect certain HTTPS url with squid

When passing all http and https traffic through squid3, is it possible if a user requests http://www.example.com I could redirect to a different url? Would this only be possible for HTTP or HTTPS ...
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35 views

Squid refuses to cache everything

Squid seems to randomly decide what to cache. http://1.vgc.no/drfront/images/2016/03/14/c=508,28,442,442;w=316;h=316;268506.jpg <- Is a perfect example of a file that doesn't get cached. It's on ...
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43 views

Firewalld blocking Squid

I have a serious problem here with Squid and Firewalld in Fedora 23. When I activate firewalld, I can not access the proxy I created, it returns a "Connection refused by the proxy server", but when I ...
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25 views

How can I enforce network time quotas? Or page request limits?

I would like to enforce network time quotas, i.e. limit users to a given amount of network time per day (but without using fixed time ranges like with the iptables time module). Or alternatively limit ...
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13 views

Double DNS resolution at Squid proxy

I wanted to check if anyone faced this scenario or not. Any input if someone can share greatly appreciated. Following is scenario:- I have set of workstations are accessing internet directly but for ...
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23 views

squid Failed to select source for '[null_entry]'

I created a proxy server using squid on Centos 6. It works fine with http but I can't open https websites. Squid listens to 443 port and the log file shows this error: 2016/03/04 12:50:46| Failed to ...
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1answer
54 views

images not displaying with squid proxy page

We are using a Red Hat 6 squid server to redirect HTTP request for custom notifications. Squid provides several built in splash pages however we are using a slightly customized one taken from a built ...
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9 views

IIS rejecting HTTP/1.0?

I have found an issue with some old proxy servers in our environment, is it possible that some webservers will only accept HTTP/1.1 requests? We have a very old squid server, and doing a wireshark on ...
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3answers
135 views

CentOS7 Kerberos Auth: Improper format of Kerberos configuration file;

I'm working on setting up a Squid 4.0 explicit proxy for group based AD authentication against a Active Directory domain (Server 2012 R2) with SSL bumping on a minimal CentOS 7 (64b) install. The ...
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1answer
23 views

Can squid block an access to the specific IP-address which is resolved with a domain name?

I have a .pac file like below. if (dnsDomainIs(host, ".example.com")) { hostip = dnsResolve(host); if (isInNet(hostip, "202.0.0.0", "255.255.255.0")) { return "DIRECT"; } } Now ...
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1answer
66 views

Integrating squid with active directory

I am trying to integrate squid as a web proxy for my users in active directory. I have followed the tutorial in the squid site in here. When i run the command : msktutil -c -b "CN=Administrator" -s ...
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18 views

Squid3 don't open port externally

I've just installed squid3, set acl's to the local ip addresses I want to be able to use it and also filtered port 3128 in iptables. Is it possible I can close this port completely on the external ...
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54 views

solutions to filter traffic with group based rules

I have a 25 computer network with 1 pfsense box (with squid installed) and 1 openLDAP server configured & working , 70% of the network is wired the rest is password protected wireless. Right now ...
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1answer
13 views

squid never_direct to certain domain and computer [closed]

I need configuration squid proxy server to redirect one ip (one user) to parent proxy, also certain domain. My configuration at now : acl vkdomain dstdomain vkontakte\.ru vk\.ru vk\.com \.vk\.com ...
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3answers
34 views

how to dynamically route requests

I have this network, red - 3 computers with internet connection - every computer has its own different connection to internet (over VPN) blue - proxy server, squid green - computers in my local ...
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1answer
38 views

Squid reverse proxy: maintenance mode

Currently I am trying to configure my squid (3.1) reverse proxy to always display a static webpage when the one and only backend webserver is under maintenance. There is no need for an automatic ...
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2answers
119 views

Trouble getting transparent Squid forwarding proxy working with ssl

I have an environment consisting of four servers networked together. One server acts as the server, and the other three act as clients for running automated tests and Linux benchmarking using ...
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73 views

Websocket (Secure) behind transparent proxy - possible workarounds

I need some help with making ws / wss connections possible behind a transparent proxy. It is obvious that websockets are not supported by Squid (or older Bluecoat proxies) in transparent mode. ...
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9 views

Proxy only certain domain

I use squid as a proxy only without caching anything.How can i proxy only domains in a whitelist.Any other request should be forwarded directly (i.e skip the squid proxy ) not blocked. never_direct ...
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1answer
43 views

How to tell squid use Source IP address for sending requests?

I have two interfaces in my ifconfig, eth0 and eth1. Squid is set to accept connections from both of them on port 3000. However, eth0's ip address is always used to send proxy requests, even if ...
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33 views

squid reverse proxy through https, no cache, no public proxy

is it possible to hide website IP behind squid reverse proxy? I am not interested to use proxy to access Internet, I don't want to use squid to cache or to make public proxy, than just to hide ...
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14 views

Pass request cookies to Squid url_rewrite_program

I am using Squid to rewrite requests and cache them. I have written a squid url_rewrite_program using python to rewrite request. Basic rewriting works well. But most of the requests have cookies ...
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1answer
35 views

how to find out the clients connects to the proxy server in redhat linux

Is there any way to find out the client machines connected to the particular proxy server in redhat linux , i am using redhat linux version 6 and squid configured in it
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1answer
44 views

accessing another subnet behind proxy

I have squid proxy with dansguardian with ip x.x.1.125 and all computer have this ip as their gateway. Now I need them to access an application on x.x.othernetwork.41 ip. But when I turn on ip ...
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40 views

Squid3 + HTTPS Authentication issue

I've successfully setup Squid3 to work as a transparent proxy for HTTP and HTTPS, installed the CA on the machines. Everything works OK, but there is this corporation site I work for where Squid does ...
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138 views

HTTPS Content Filtering without de-crypting traffic using squid?

I am attempting to terminate https traffic based on ACLs using ssl_bumping WITHOUT de-crypting the traffic in intercept/transparent mode. Has anyone got this to work before? I have copied my ...
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20 views

Squid cacher_peer connection in ssl and HTTPS

I have a Squid server who relay traffic to other Squids servers. I want to encrypt connection between these servers. I use the ssl option in squid. cache_peer OUTPROXYIP parent 1081 0 round-robin ...
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41 views

iptables configuations for stunnel+squid

I'm building a highly anonymous proxy server with squid and stunnel, and I'm facing a configurations problem on iptables. The server should act like this: browser <-> client stunnel <=> ...
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65 views

Squid stop working,constantly freezes

I'm running Squid v. 3.3.11. I have around 150 active users. The machine physical resources are more than the recommended. I don't use the cache function, so it is turned off. The problem is when I ...
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35 views

Squid reverse proxy not able to cache

Not able to cache anything with squid reverse proxy, running in centOS6.5 squid.conf http_port 81 accel defaultsite=example.com:8080 no-vhost cache_peer example.com.ip.address parent 8080 0 ...