A proxy is a program that acts as an intermediary in connections between a client and server. There can be proxies for any communication protocol: HTTP, SSH, …

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Proxy connection via SSH from one terminal to another

I have a private proxy which can be either HTTP/SOCKS, and i am renting a Linode server that i use for web-hosting. If I use a program like putty to SSH onto the webserver and run who it will display ...
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20 views

Internet connection only through VPN after forced shut down

When on campus, I can only access the internet via the university's VPN. The connection is established by the Cisco Annyconnect Client (version 4.1). I also set the proxy in the browser. All according ...
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3 views

tcp_outgoing_address: cannot connect to website

I have a LinuxMint running in a virtual box. I have installed a squid3 proxy server and it is working. However, if I want to add a tcp_outgoing_address it is not working. I am using the default ...
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3answers
92 views

Set monthly data limit for internet proxy (squid) users

We are using a squid proxy server (version 3.1.4) in our office environment on linux box. In total we are approximately 20 users and all are in one network and we have internet plan of 25GB/month. Now ...
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1answer
22 views

Tunnel all network traffic through another Linux server

I have two VMs both running Ubuntu 14.04, one is connected to the internet and accessible publicly but the second one is not. Now whenever I want to install something or run apt-get update, it does ...
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2answers
26 views

Is there a way for pre-setting proxy addresses for specific networks?

I'm tired of commenting in and out different proxy acquire lines which located in /etc/apt/apt.conf.d/10proxy as I change networks. Is there a way for binding the settings for networks? Iphones have ...
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1answer
40 views

SSH Tunneling - Local and Remote Use Cases

I just learned the basics of SSH tunneling from googling. I saw this interesting question: How does reverse SSH tunneling work? But I still find it a bit confusing, more specifically on the ...
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1answer
137 views

Internet not reachable from the terminal in kali linux 2.0

I am running Kali Linux 2.0 in virtual machine in windows 8.1.The problem here is my terminal is not connecting to the internet, but my kali linux browser is working perfectly. I could not use tools ...
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1answer
20 views

Proxify dns queries for bash command

I want to use different dns server (not tor, any dns server i set) for certain terminal command. Say it would looks like $ DNS_SERVER=8.8.8.8 dnsify ping example.com and it uses google dns. I know ...
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19 views

Using socat to Tunnel/Proxy TCP want to split send/receive into separate files

I'm using socat to dump plain TCP (e.g. HTTP) traffic: socat -v tcp-listen:$PORT,reuseaddr,fork,keepalive tcp:$TARGET_HOST:$TARGET_PORT At the moment all send and receive traffic is dumped into ...
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62 views

How to use yaourt on arch linux under proxy?

How do I install applications using yaourt under proxy network. For pacman I can simply use: export http_proxy=http://usernm:passwd@link:port sudo -E pacman -S application But how do I do this for ...
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26 views

Unable to update arch linux under proxy [duplicate]

Cannot update pacman using sudo pacman -Syu under proxy network. I tried exporting environment variables using export http_proxy='http://uem:12345@172.16.0.1:3128/' as my workplace network uses ...
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36 views

Browser is ok but can't direct internet through a shadowsocks server

Ok it seems an easy thing but I just couldn't make it work after lots and lots of searching. I have Ubuntu 14.04. This is config.json file including configurations of my friend's server running ...
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0answers
35 views

Squid JavaScript injection problem [closed]

I got Squid up and running on my Debian machine. I tried connecting and it works, but the url_rewrite_program function does not work! Here is my Perl script: #!/usr/bin/perl $|=1; $count = 0; ...
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73 views

firefox 38 hanging with corporate proxy and winbind?

I seem to have broken firefox 38 and it is unusable. It just hangs and freezes for long periods of time ranging from a few seconds up to infinity - usually in steps at the authentication prompt for ...
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3answers
62 views

How do I set systemwide connection over a proxy server

My Internet access is through a proxy, my OS is Debian 8, each application must configure it to use the proxy, but there are some that are a headache to make it work with a proxy, then my question is: ...
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24 views

Is there any way to configure fully automated proxyclient for workstations?

My network diagram is similar to above image; pc-router is also acting as firewall & I'm running squid on it. pc-router is running debian Vlan having workstations running fedora, ubuntu and ...
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1answer
41 views

RHEL internet connection behind company proxy?

Just set up a RHEL v6.4 VDE for development but I can't seem to connect to the internet no matter what I try. I'm sitting behind a company proxy that requires authentication. Here's what I've done so ...
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1answer
36 views

Local transparent proxy

In my workplace I'm using Debian Linux. It is, however, a Windows shop and recently they decided to install a proxy that needs my Windows domain credentials to use. I can only access the Internet ...
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1answer
65 views

Disable SSH tunnel “open failed” messages

I want to disable the "open failed" messages that appear in a SSH session when tunnelling is disable. It interferes with my SSH session if I'm, for example, writing something in vim, then the whole ...
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0answers
41 views

git refuses to connect without proxy

I work on a Linux system in a Windows environment. To authenticate with a NT proxy server I had setup cntlm and configured system programs to use it via setting http_proxy environment variable in the ...
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1answer
194 views

Redirect proxy traffic through another IPv4 address

I have a CentOS 6 box running Squid and Privoxy to create a custom proxy setup. The server has several public IPv4 addresses configured on virtual eth0 interfaces. My Goal: I want to send all proxy ...
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37 views

Privoxy - Annoying Error Used IPTables

I'm running privoxy off a machine that also has hostapd installed, I am trying to run all http traffic from hostapd through privoxy i have already tried this: iptables -t nat -A PREROUTING -p tcp ...
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1answer
41 views

Install nginx as proxy after Apache

If I install nginx as proxy on my Debian wheezy server, what steps would be needed to change my apache configuration so all static content is directly delivered by nginx? I already have some 250 ...
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3answers
166 views

How to browse a website as if I am in USA? [closed]

I am in Taiwan right now and whenever I go to a website that I could browse in USA, it directly transfers me to the Asia site. There is no way to browse the USA version of the site, probably because ...
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1answer
87 views

Forwarding a udp socket connection to a range of ip addresses

I have a program which is a udp socket client. I can determine an IP adress to which this program should send. Unfortunately, I configured the computer as Access Point and don't know the address of ...
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180 views

How to update squid proxy 3.5 in Centos 6?

Iam using Centos 6.6 with 32 bit os. Now i want to update squid proxy from 3.1 to 3.5 . Is it possible to update in centos 6.6 ? If it is possible, please tell me how to update it.
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118 views

Proxy server vs /etc/hosts file

I was told today that /etc/hosts is not a viable option for testing a new destination server. The DNS for /etc/hosts modifications could still cache the old DNS settings and we would get incorrect ...
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1answer
33 views

Unexpected netstat output in DNAT conditions

So, here I have a basic setup with SOCKS5 proxy listening on, oh, say 8123 I redirect TCP to the proxy via iptables From iptables perspective everything looks peachy, iptables -t nat -v -L shows ...
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1answer
626 views

Kali linux, channel all traffic through tor privoxy, time/timezone

Privoxy is for anonymising http/https traffic and tor for socks, so here is my question; can I channel all traffic (no matter what ftp,socks,http) to privoxy and then have it to channel it to tor? Is ...
0
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1answer
118 views

pptp is refusing traffic

I have setup a pptp (VPN) server on CentOS 6.5. I can connect, but unfortunately, when I try to load a page, it hangs on 'Connecting...' I have no idea what could cause this... tail /var/log/messages ...
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33 views

Squid: no authentication when visiting HTTPS websites

I have setup Squid and everything is working. I am now trying to setup a password and all tutorials refer to a file called 'ncsa_auth'. Unfortunately, I do not seem to have this file. I checked in: ...
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37 views

Command to see my current ip if proxy is applied only for a certain website

It might not be a relevent question here on so, but I tried on http://networkengineering.stackexchange.com and there are less users. So, I am not a networking guy and I have the next situation: I ...
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2answers
892 views

Proxy (nginx) shows a Bad gateway error

I have a service (docker registry) that runs on port 5000, I have installed nginx to redirect http request from 8080 to 5000. If I make a curl to localhost:5000 it works, but when I make a curl to ...
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1answer
22 views

Apache ReverseProxy ssl

I have the following ReverseProxy set up which works for http requests: NameVirtualHost *:80 <VirtualHost *:80> ServerName sub.domain.com ProxyRequests Off ProxyVia Off <Proxy *> Order ...
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223 views

How can I redirect internet traffic from local to proxy server with ip tables (DEBIAN 6)

So i made topology as shown in figure. Router have 3 interfaces like this: eth0 to internet side (with ip 192.168.1.10/24 gateway 192.168.1.254/24). eth1 to server-PC side (with ip ...
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1answer
119 views

Is my server being used as a proxy or malicious requests?

I have an Ubuntu, Apache, Passenger, and Rails 4 project on AWS EC2. I am a beginner full stack developer and am unfamiliar with the security and server side of my project. This is my first time ...
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1answer
98 views

Local system doesn't forward to intended port defined in OpenShift proxy app

I've set up a proxy server via OpenShift based on this tutorial and used a few days by forwarding my local system's ports to remote app's ports: $ rhc port-forward AppName The result in the proper ...
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2answers
815 views

Pages don't get blocked with Squid over HTTPS

I have set up Squid to block pages on my own system (i.e not on a network), and I'm trying to get SSL to work with page blocking. To this end, I've set up ssl-bump and installed the certificate to my ...
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186 views

HAproxy: redirect from IP to hostname

I have a proxmox host with multiple VM and multiple webserver, i have a VM with haproxy that redirect external request to internal VM. I need redirect IP request to hostname, if in my browser i type ...
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1answer
257 views

Squid with mac address filter acl

I am setting up Squid proxy with mac address acl. I have recompiled squid 3.5 rpm with --enable-arp, acl. But after configuring Squid.conf with mac address acl its unable to block access for unwanted ...
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0answers
169 views

Best way to transparently redirect traffic to proxy

I've implemented a wireless router using hostapd on Debian Wheezy running on a Banana-PI. To access the internet, this router is attached to another network that I haven't any control of via ethernet. ...
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1answer
77 views

Transparent proxying of TCP connections on port (mostly, without root access)

I have the Client machine living somewhere on the Internet, and it needs to access a custom port of Target machine (or, initially any port on any reachable machine, but, eventually, particular port, ...
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0answers
215 views

cURL does not recognize certificate

At our company they enforce a web proxy which breaks SSL connections and replaces the certificate by its own fake certificate. (To be precise it uses a proxy cert which is signed by the company cert.) ...
2
votes
1answer
177 views

Problem with pkg behind a chunking proxy

I have a freshly installed FreeBSD 10.1 at work in a VM. As it is behind a corporate proxy, I had to set HTTP_PROXY in environment and it began to run fine. But no way to get pkg to work correctly. I ...
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0answers
73 views

ufw firewall - how to only “allow” when I am going through a proxy

I am using a proxy to navigate on internet, and I am trying to setup a firewall that will only let me connect to internet via this proxy: if I forgot to turn on the proxy, that I should not be able ...
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1answer
127 views

Linux : Very slow internet connections through proxy

I have changed to Linux recently. Here I am experiencing very slow Internet connections for applications like apt-get and Firefox browsing through proxy (download speed in Firefox is pretty normal). ...
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1answer
88 views

What does the %h and %p do in this command?

$ ssh -o User=fred -o ProxyCommand="nc -X 5 -x localhost:9150 %h %p" server.example.org It's from http://en.wikibooks.org/wiki/OpenSSH/Cookbook/Proxies_and_Jump_Hosts I can't find any comments about ...
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1answer
147 views

iptables: route packets to example.com via public proxy

I want to access certain websites via a public proxy and I can't seem to get it right using iptables. Let's say I want to access example.com having ip address 1.2.3.4 via a public proxy at ...
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56 views

How do I correctly configure Danted?

I have a debian droplet on digital ocean that I'm trying to get danted to work on. I know I have the right username and password and I want to set up a socks5 proxy with auth. Maxathon gives me a 130 ...