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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Curl 7.27: [ANY]_PROXY set; curl does not resolve the hostname via proxy

I'm using curl with a Socks proxy. The proxy is configured via ANY_PROXY="socks5://NNN.NNN.NNN.NNN.PPPP" I observed that curl resolves the hostname locally, not via the proxy. When requesting a URL ...
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0answers
230 views

route gateway proxy traffic through different interface with identical upstream gateways

My question is similar to the below with a small caveat not answered by any of these threads: Output traffic on different interfaces based on destination port ...
4
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1answer
10k views

How to configure CentOS 6 as a Proxy Server

I have installed new server with CentOS 6. How do I configure it to become a Proxy Server?
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6k views

CentOS 7 httpd failed to make connection with backend

In a CentOS 7 server with apache httpd 2.4 set up as an ssl reverse proxy for tomcat, I am getting an error indicating that httpd is not able to connect with tomcat. How can I resolve this error so ...
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1answer
139 views

Issue due to scope of environment variables

I had an Internet connection problem which turned out to be related to setting up the appropriate proxy environment variables. After adding lines like export ...
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1answer
804 views

PGP keyserver and proxy firewall issues

I am not sure this is a Linux question directly ... I use Arch Linux which uses package signing. This requires me to download a set of pgp keys with the pacman-key program. This works off the ...
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2answers
3k views

Redirect ALL packets from eth1 & eth2 through a SOCKS proxy

Is there a way to redirect all traffic, UDP and TCP, coming to and from eth1 and eth2 through a SOCKS proxy (Tor) which then passes it through eth0? eth0: Internet in - leads to the main router, then ...
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1answer
461 views

How to handle repetitive download of some specific large files that come from the internet

We are going to offer an App which will allow our customers to download some sort of audio guide for the castle I work for. I would really like to not have every user who downloads the App (through ...
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87 views

Transparent proxy to other IP of thousand ports

I was bought a service that only allow a IP, the IP that i say, only one, but I need use this from more IP's. I think that I can install in this computer a system to do a transparent proxy for ...
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1answer
2k views

How does a transparent SOCKS proxy know which destination IP to use?

There are two SOCKS proxies that I know about that support transparent proxying for any outgoing TCP connection: Tor and redsocks. Unlike HTTP proxies, these SOCKS proxies can transparently proxy any ...
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0answers
126 views

SSH SOCKS5 proxy, is my traffic being kept safe?

So I've been running everything on my system through my SSH SOCKS5 proxy. All the network commands I type in the terminal, I use proxy chains, and I have my system set to use my SOCKS5 proxy globally ...
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1answer
488 views

Tunnel incoming rtorrent connections to rtorrent

I'm running rtorrent on a seedbox, but this seedbox has significant bandwidth restrictions. I have another server (I'll call it the proxy) with no bandwidth restrictions which I'd like to use as a ...
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1answer
20k views

Setting up Proxy Settings on Debian

During installation of Debian I was asked for a Standard Proxy String in the form of http://user:password@host:port/, which I entered. apt-get ran and retrieved files during update, and now Debian is ...
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3answers
6k views

Fastest way to port scan. NMAP?

I am looking for a quick way to scan for commonly open ports on proxies. I am doing this through php and I have been using nmap and came up with this command: <?php system("nmap -PN -p ...
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1answer
2k views

How do I deal with a certificate based transparent proxy in Arch Linux?

I have setup an Arch Linux VM at work, and my company uses a transparent (cut-through) proxy with a self-signed certificate and requires authentication. Whenever I try to install any packages through ...
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1answer
3k views

SOCKS5 is there encryption between client and proxy server?

I've read the wikipedia article on socks and cannot find information about encryption between client and proxy-server. There is only information about authentication. Is socks5 connection a ...
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0answers
147 views

Exclude a loopback interface or address from processes listening on the “any” address

I'm trying to create a setup where I can connect to some service running on a host only reachable through a SOCKS proxy by the host's actual name and the port the service actually uses (so that ...
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0answers
8 views

How to SFTP through proxy if there is no netcat? [duplicate]

sftp -v -oProxyCommand="nc -v PROXY_IP_HERE PROXY_PORT_HERE %h %p" user@remote_sftp_server.com 22 How can I do this if I don't have netcat installed? I don't have permission to install it, even in ...
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1answer
435 views

Avoid trapping by ssh ProxyCommand

I have the following lines in my .ssh/config: Host localhost ProxyCommand none Host n0* ProxyCommand none Host * ProxyCommand corkscrew proxy.m.com 80 myserv 443 ~/.ssh/auth i.e. for localhost and ...
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1answer
252 views

LAMP Hardening, Transparent Proxy with iptables

I'm running a LAMP server with FTP(S) and several users. The users have only access to uploading PHP files and other web content. Some are running Drupal and Wordpress, but also a few home made stuff. ...
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1answer
678 views

installing synaptic package manager from outside the repos

I have been facing some problems in installing software with ubuntu software center, due to the fact that I have not been able to run no proxy for the whole system, I have tried all methods prescribed ...
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1answer
463 views

Configure applications to ask for a user:pass behind a proxy

Here's the deal: I'm trying to set up a SQL server with Debian Linux, I managed to install Debian - but I can't get apt-get to work, since I'm behind a proxy. I already managed to setup Iceweasel to ...
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2answers
4k views

Proxy problem in Mint 16

I recently installed Mint 16 alongside windows 8. I use the Internet through a proxy server in my campus.So after setting the proxy in the Network setting, I noticed that the Software center and the ...
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1answer
314 views

How can I tease Sonicwall ?

In my college, I can't use the web, because they use Sonicwall network firewalls How can I tease it? For I use all websites in my college? Please see the result when I access a website blocked ...
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2answers
188 views

Port Routing/DNS for individual program

Background Flickr has closed its http api leaving an https only api. My favourite uploader (the official Flickr Uploadr version 2.5 running under wine) is no longer maintained, so this change broke ...
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122 views

Transparent Proxy

I am setting up attempting to set up a transparent proxy on CentOS using Squid. So far I have managed to filter the content and get it working perfectly. The only issue I am having is getting a form ...
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4k views

Error: iptables: No chain/target/match by that name

I am trying to configure proxy server on RHEL Server 6.5 using Squid and iptables. Below is the command I executed and the error message it displayed: vzlptest01 root [root] > iptables -A INPUT -i ...
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1answer
716 views

Possible to add proxy after TOR exit node?

Can I configure the TOR Browser which comes with Whonix to use a proxy, so that it becomes an extra hop after the TOR exit node? Connecting as follows: Browser(workstation) > TOR(gateway) > exit ...
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2k views

Allowing mobile devices via proxy on pfsense [squid + AD auth + WPAD]

Our pfsense serves the internet via Squid proxy + AD authentication while filtering HTTP/HTTPS access using Squidguard with WPAD enabled. So that users do not need to enter proxy manually as the WPAD ...
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1answer
74 views

Visualization tools for REST-based services

Let's say there is a cluster/set of processes that communicate via REST/HTTP (that could describe a whole lot of products these days). What's a good and simple way to view the communication among them ...
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1answer
130 views

How do I run a sock proxy via ssh on a non-standard port?

I am running into a bit of trouble accessing a web application running on port 9293 on a remote server only accessible via ssh on port 5634. I've configured FoxyProxy to route all traffic meeting the ...
4
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2answers
31k views

Using curl to access basic auth protected website via proxy (polipo)

I am trying to download a file protected via basic auth: curl "http://User:Pass@example.com/blub/bla.bin" This is working fine. As soon as I tell curl to use my locally installed polipo it fails: ...
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1answer
114 views

CentOS Traffic Filter

I am trying to use Squid to filter the traffic flowing through the network. I am also trying to make this system transparent. My network setup is like so: Router -> CentOS Machine -> The rest ...
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3answers
99k views

How to flush local DNS cache in CentOS

(I am aware that googling this question gives me tons of stuff, but literally none worked) I'm looking for a way to flush the local DNS cache on a Centos 6 system, it is not running any DNS server or ...
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1answer
233 views

Routing packets between networks with iptables

I'm trying to create a proxy of sorts using just iptables. The linux computer (my proxy) has two ports: p2p1 is connected to the Internet. em1 is connected to a local network. There are two ...
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0answers
292 views

Running a Transparent Proxy for LAN and Webserver for WAN

I am running a LAMP stack on an Arch Linux server in my home, and my router firewall port 80 is open to the world. Recently, I've decided to set up a dansguardian transparent proxy to do some web ...
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4answers
675 views

Unset http_proxy enviroment variable

Updated 11/03: After doing some test with your suggestions, I only can be sure about one thing: there is something related to the graphical environment, because if I login through ssh or using ...
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2answers
445 views

What is the simplest method to redirect traffic using either a proxy or iptables?

I need to redirect all incoming traffic on port 7777 to a specific destination_ip:port. I have about 40 Litecoin (scrypt) mining rigs that I have to manually reconfigure each time I'd like to switch ...
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1answer
4k views

Proxy server with authentication not working at command line

I'm running Debian 6 in a VM on a network that requires Windows authentication to a proxy server before it can run any http/https/ftp connection. I've tried: export ...
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0answers
18 views

Reverse proxy for OVZ containers

Is it possible to use a reverse proxy to channel all network traffic from one domain to a single container using the same IP for all the domains? The reverse proxy would have to read the domain and ...
2
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1answer
230 views

unexpected squid behaviour (cache for openSUSE updates)

With no previous experience I have just set up a squid proxy. Its only purpose is to prevent that all the Linux systems (openSUSE) download their updates from the Internet. A proxy can easily be ...
0
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1answer
153 views

troubleshooting bip proxy server configuration: FATAL: mkdir($HOME/.bip/logs) No such file or directory

I am trying to set up bip on a proxy server (ie AWS EC2 instance - a virtual private server) and when I try running it with the command: 'sudo /usr/bin/bip -f .bip/bip.conf` from my /home/user ...
0
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1answer
305 views

Error “ssh_exchange_identification” with Corkscrew

I'm trying to reach my ssh server (i'm behind a corporate proxy) so I tried to use Corkscrew. My ssh server is listening on port 443, I put sshd: ALL in my /etc/hosts.allow and there's nothing into my ...
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4answers
2k views

Dynamically changing the proxy server for all outgoing traffic

I have three proxy servers in my college, all of them are connected to three different service providers. At different instant of time, different proxies give different speed (depending the number of ...
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0answers
1k views

How to configure Squid for Microsoft Outlook?

I have configured a Squid proxy server on RedHat Enterprise Linux 5.4. All my Windows clients have been configured to use the proxy at 192.168.5.100, port 3128 when accessing the Internet. However, ...
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2answers
2k views

Socks5 server on Debian

I would like to setup socks proxy on my Debian VPS. I try to use squid but its to hard for me. I saw a Dante software and think about it. I would like to setup dante to work with the web browser and ...
2
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1answer
136 views

Can SSH proxy requests from the remote system through my local system to the internet?

I have SSH access to a *nix system over a VPN. I need to install some packages from the distro's repos to that system but that system does not have general access to the internet to reach the repos. ...
2
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3answers
13k views

Transparent proxy with squid 3.1 on RHEL 6

We have nearly 50 systems with windows XP and have Linux (RHEL6) for server. Also have squid 3.1 , Samba and Apache for local use. Under proxy, VPN and outlook express does not connected. I heard ...
3
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1answer
918 views

squid - ssl bump

I have squid configured to bump SSL connections; however, when I configure my browser to use squid as a proxy, it doesn't actually do any SSL bumping. When I check the certificate, I can see it is ...
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2answers
2k views

Serve Internet to remote machine via SSH session?

The machine via which I'm SSHing to the remote/host machine (same network/LAN) has access to the Internet but the host doesn't. Running updates and installing packages on the host gets quite ...