The tag has no wiki summary.

learn more… | top users | synonyms

0
votes
1answer
222 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 ...
0
votes
0answers
21 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. ...
0
votes
0answers
39 views

Iptables - double REDIRECTING - is it possible?

I have 2 kinds of proxies in my local machine : stunnel and TOR-VPN. stunnel is listening on port 6666 TOR-VPN is listening on port 9040 The IP of stunnel server is a.b.c.d. I want to get web ...
0
votes
3answers
74 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 ...
1
vote
2answers
89 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 ...
0
votes
1answer
66 views

how to run pptp over redsocks proxy

I have one (virtual) Linux box in Ubuntu, that has redsocks set up done. Inside the machine, I could confirm that the the redsocks did work (use wget to check the external IP). Now, I want other ...
0
votes
0answers
93 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 ...
0
votes
1answer
234 views

Iptables fails to redirect traffic to transparent proxy

My goal was to use ubuntu as a router, with Redsocks serving as a transparent SOCKS proxy redirector. Each machine on my network would have its TCP/UDP traffic redirected to a different port where ...
1
vote
0answers
23 views

How can I throttle the rate of messages with a transparent proxy server?

I am trying to run a client software that connects to a socket server and downloads data. My problem is that the socket server has a max rate of messages per second, and it disconnects a client if ...
2
votes
1answer
188 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 ...
0
votes
1answer
91 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?
0
votes
1answer
109 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 ...
0
votes
0answers
1k 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 ...
1
vote
1answer
191 views

Set up proxy for vpn server on ubuntu server 12.4

I have a vpn server with HTTPS, L2TP, OPENVPN, and PPTP. I want to set up a proxy on the server, so all connection that comes from vpn clients, they will use that. I created the following bash script ...
1
vote
0answers
522 views

TPROXY Not working with HAProxy, Ubuntu 14.04

I'm trying to use HAProxy as a fully transparent proxy using TPROXY in Ubuntu 14.04. HAProxy will be setup on the first server with eth0 111.111.250.250 and eth1 10.111.128.134. The single balanced ...
1
vote
1answer
249 views

How to check if Ubuntu 14.04 Kernel has TPROXY

I'm using Digital Ocean's Ubuntu 14.04 image and needs the kernel to be compiled for TPROXY. Is there a way to check whether the current kernel supports TPROXY?
0
votes
1answer
669 views

haproxy transparent mode on 14.04

As per my previous question SSHD real-ip behind haproxy - I'm now attempting to setup HAProxy to transparently pass the IPs to the backend services. tproxy modules loaded / and supported in haproxy ...
0
votes
2answers
160 views

Remote IP and SMTP Proxy

Is it possible to proxy emails - with postfix for example - transparently so the backend mail server will get the last SMTP server IP address (rbl purpose) and not the Proxy IP address? If it is ...
0
votes
0answers
48 views

What should be the correct http response code for custom proxy login/register page

I configured a firewall rule on a dd-wrt router to redirect http connections to a shell script, and drop the remaining ports, for the unregistered range of IPs. I am trying to tell the clients they ...
4
votes
3answers
7k views

How to setup client for squid transparent proxy?

Server Details Squid Transparent Proxy Version: 3.3.8 OS: Ubuntu Server 14.04 Server IP: 192.168.1.3 Squid config file (excluding comments using grep) root@ubuntu:~# grep -v '^$\|^\s*\#' ...
3
votes
2answers
62 views

Transparent proxy cache on BGP multihome

Provider A have transparent caching with squid . In the situation which a client has multihome BGP with provider A and provider B then client does not send its outgoing traffic (upload) to provider ...
1
vote
1answer
392 views

Security implications of running SquidProxy on the main pfSense Firewall

I want to start a discussion about the pros and cons of running a SquidProxy server on the same pfSense box as the main firewall. Today I have one pfSense doing all the firewall things, like routing ...
-1
votes
1answer
97 views

Transparent caching solution

I would like to in some cases make transparent caching for certain sites. Let's say that I have a static list of site from where I want to cache all downloads, ie: the client wants to download ...
2
votes
1answer
226 views

Host doesn't send ACK-SYN packets for transparent proxy

I am setting up a transparent proxy using haproxy, the setup works without the 'source 0.0.0.0 usesrc client' line. When I add that line in, the endpoint is called from the original client's ip ...
-1
votes
1answer
400 views

How can I set up a transparent proxy using squid and squidguard which has time-based acl based on MAC addresses?

I have a linux based server and I want to control access to internet based on MAC addresses of devices. How can I do that?
-1
votes
1answer
1k views

How to configure Windows Server as a Web Proxy? [closed]

I'd like to set up a transparent web proxy on my home network. I know you can do this with Squid on Linux. I was wondering if Windows Server includes a web proxy?
0
votes
1answer
485 views

Trying to setup transparent, load balancing, SSL reverse proxy. Is it possible?

I've done a few weeks worth of research on this topic for a project, and unfortunately I'm a simple code monkey, my knowledge of networking and SSL are limited. Pretty much every search I've done so ...
3
votes
1answer
1k views

Squid SSL transparent proxy - SSL_connect:error in SSLv2/v3 read server hello A

I am trying to setup a SSL proxy for one of my internal servers to visit https://www.googleapis.com using Squid, to make my Rails application on that server to reach googleapis.com via the proxy. I ...
0
votes
1answer
144 views

Setting a transparent proxy without changing existing IP Address values

The end goal of what I'm trying to achieve is: Block access to certain websites and view bandwidth used by IP Address. Without changing my employee's gateway address. -- Our internet connection is ...
1
vote
1answer
93 views

Proxy to remote proxy?

One of our partners require us to use one of their proxies in order for us to reach various services there. What I would like to achieve is to set up a local proxy at which I point the domains, so ...
-2
votes
1answer
141 views

Transparent AntiSpam solution in ISP scale [closed]

We have and ISP with adsl , broadband etc subscribers (average 10000 online users with 1M of Bandwidth . average ) . Some users infected by spammer viruses which makes our ip address spaces ...
3
votes
1answer
144 views

Selective use of transparent proxy on per-connection basis

TL;DR - I'm planning on using an application-level firewall to forward only requests for HTML content to a transparent proxy. So the initial GET request for google.com (for example) that returns an ...
-2
votes
1answer
64 views

Setting up a DHCP/Proxy Server

Current setup: Modem -> Firewall(DHCP) -> Switch and Wireless Router |-> Computers If I wanted to setup a Proxy Server in there, it would have to replace the Firewall correct? The idea is so that ...
2
votes
0answers
28 views

Evaluating and redirecting http requests

I am trying to evaluate traffic on port 80 to determine whether or not if we need to redirect a request, or pass it through, while being transparent. Scenario: User connects to our system via Wifi. ...
0
votes
1answer
537 views

apache module to perform search and replace operations on response bodies?

I am trying to do search and replace operation on response bodies using a transparent apache reverse proxy configuration, the below config using "mod_substitute" and "mod_proxy" works as expected : ...
0
votes
0answers
654 views

Can't get Squid to work with Intercept

I have a Sqiud Proxy server I am trying to add Transparency to using the Intercept feature. Currently the Proxy server accepts and functions fine as a standalone proxy for users. However when I add ...
0
votes
0answers
65 views

config squid to set specific acl for username and then set it to the ip addr of username

Assume your executive of corporation, sit on his clerk desk PC, and login to his username on the network (authenticate with Active Directory), of course he wants his full access to internet, but he ...
0
votes
1answer
1k views

preventing squid forwarding loop with IPtables

I have a web application, and I'd like to limit file upload size. I thought I'd try using squid for this, via its directive request_body_size_max. I have my webserver running on port 8080, and I've ...
1
vote
1answer
295 views

Redirect traffic on port 80 into apache for unknown macs, and into squid for some macs

I have a linux box behaving like a router that handles two network interfaces: eth0 for internet and eth1 for LAN. I set up iptables in order to redirect all the web traffic coming by the LAN into a ...
1
vote
2answers
842 views

Bypass transparent Squid proxy on Tomato USB for specific sites

I'm using a router with Tomato USB to forward port 80 requests to a Ubuntu Server with Squid 3 in transparent mode. Someone on the Tomato forum adapted these instructions for Tomato: #!/bin/sh ...
0
votes
1answer
45 views

Setting up a transparent proxy for a database

Currently my setup is as follows :- Database client/library <---------------------> Database I'd like to have the following :- Database client/library <---> Proxy <-------------> Database ...
2
votes
0answers
352 views

Squid as fully transparent reverse proxy

I have got a few web servers running on my server and I want all of them to be accessible via port 80. I set up squid as a reverse proxy and it works fine. I, however, need the source ip address to be ...
1
vote
1answer
328 views

How to force outgoing requests from webserver/PHP through squid proxy on same machine?

I have a Debian Squeeze VPS configured as an nginx web server. For security reasons I have blocked all outgoing connections except those to the Debian update servers (this stops bad scripts from ...
0
votes
1answer
73 views

.NET WebRequests fail on network with Blue Coat proxy

I have a .NET 3.5 application that makes a standard http WebRequest: var webRequest = WebRequest.Create(new Uri("http://myserver.com/target.xml)); var webResponse = webRequest.GetResponse(); This ...
-3
votes
2answers
2k views

How can system admins track employees Gmail chat [closed]

I am in a company where i have been warned about using chats. I spoke with one of the admin and he said every chat is being Monitored; ok i agree it can be if we use plain text but what if we use ...
0
votes
1answer
33 views

Sharing proxy-cache among multiple user groups

Here is what I am trying to do. I have two different VLANs, each using their own Squid proxy-caches. Now I want to set up a single proxy-cache which both VLANs use. The catch is I don't want them to ...
0
votes
1answer
675 views

Transparent redirect or proxy in Apache, preserving incoming request

When a user first hits our server, we want to capture some information about the incoming request: GET parameters, Referer header, &c. The general idea is that when we get an incoming request that ...
-1
votes
1answer
105 views

Squid connection to 0.0.0.0 Failed

trying to set up a Squid transparent proxy. All is good for the transparency, however the proxy occasionally runs into errors such as "connection to 0.0.0.0 Failed" Is this common? Am I doing ...
0
votes
1answer
106 views

Squid proxy loading from the localhost web server

I've just set up a squid transparent proxy inside my network. The proxy works fine, however it seems some sort of caching policy is causing the proxy to instead go grab a copy of the website, it's ...
0
votes
1answer
225 views

How To Route All HTTP Traffic from eth1 to the Squid Proxy? The Iptable rules?

I have just setup a squid proxy server. The server have two interfaces. eth0 connects to the router and eth1 is connected to a switch where all the other machines connect. The server also have a DHCP ...