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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How to ssh to a server using another server with key from the second server?

How to configure ssh to imitate this: ssh server1-user-name@server1.net -i /path/to/.ssh/server-1-ssh-key -t ssh server2-user-name@10.0.0.10 -i /home/server1-user-name/.ssh/server2-ssh-key When I ...
0
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1answer
81 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
119 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 ...
2
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1answer
690 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
683 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, ...
0
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1answer
281 views

Apache configuration with proxy and location

I want to map these domains to these ports. How can I do it? http://test1.example.com/phpmyadmin/ example.com:80/phpmyadmin/ http://test1.example.com/app1/ example.com:8080/app1/ ...
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2answers
2k 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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0answers
24 views

SSH into servers each with different subdomain over one IP [duplicate]

I have several Ubuntu VMs (bridged) behind a router that I want to access remotely. I've also got an nginx reverse proxy that handles the port 80 traffic like this: sub1.example.com -> server1 via ...
0
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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
votes
1answer
81 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. ...
3
votes
2answers
7k 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: ...
3
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1answer
641 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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0answers
155 views

Apache CGI proxy returning 502 Bad Gateway on Fedora

I need to configure Apache as a proxy on Fedora and am using a CGI script to define allowable domains. This approach has worked in the past on Windows but now on a Fedora Server I am getting the ...
5
votes
2answers
259 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 ...
2
votes
1answer
337 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 ...
2
votes
1answer
1k views

stunnel - how to setup stunnel to handle ssl and attach http with it?

I am running Google App Engine which is a http web server with some redirecting and other real-time stuff. But it does not have SSL to include so its unable to make HTTPS. Therefore, i was trying ...
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vote
1answer
303 views

Privoxy/VPN/remote proxy

On Privoxy, my current config involves this. (forwarding all requests to netshade proxy): forward / nl1.netshade.net:350 Now, I would like to use a VPN on top of this config while keeping my ...
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0answers
90 views

Why is Apache not respecting aliased directories?

In ssl_default.conf where Apache serves as an SSL-adding proxy for Django Gunicorn, I have: ... Alias /admin/static/ "/usr/lib/python2.7/dist-packages/django/contrib/admin/static/" ...
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0answers
183 views

Can proxychains proxify VirtualBox?

I have my proxychains proxiyfied VirtualBox, the guest OS connects to the internet directly that bypassing the proxy setting in /etc/proxychains .cnf. So, which is proxychains can and can't?
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0answers
96 views

IMAP caching proxy for sharing connections

I'm trying to find an IMAP proxy in which multiple clients will share a single connection to the same server. The reason for this is because most mail providers only allow a limited number of IMAP ...
2
votes
0answers
19 views

Route socks proxy traffic through wireless client [duplicate]

I have a router with two Internet WANs: DSL (vlan1) and wireless client (eth1). They are both in default route: vlan is the first and eth1 is the second (I am using ip route add default scope global ...
3
votes
1answer
470 views

ProxyCommand without socat, nc or Bash's TCP redirection?

ssh_config's ProxyCommand allows to establish some connection to a proxy prior to establishing the connection to the actual target machine. Simple question: how can I leverage the dynamic or SOCKS ...
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2answers
211 views

Reverse socks5 using SSH

Setup: Server is a virtual machine Server have a local ip adress Server is restricted so that it can't reach the internet (not sure how) Client machine have access to both server via SSH Client ...
2
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0answers
416 views

Route all HTTP traffic through polipo

I've set up polipo on my machine to listen to the default port 8123. To test it, I set the in-memory cache to a ridiculously high 2 GB and downloaded a 50 MB file using wget utilizing the proxy. ...
0
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1answer
123 views

SSH proxy laptop

I run a simple ssh proxy and I am always on the move with my laptop. Having to restart it every time I open the lid and connect to the internet. sshpass -p password ssh -D 9999 root@myvpsip Is it ...
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2answers
227 views

How do I unset a variable in bash

I have tried the following command to set Proxy on yaourt: export ALL_PROXY=http://proxy.example.com:8080 The question is how to unset the proxy on yaourt? In general how can I unset the value of a ...
2
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1answer
453 views

Run my own HTTP fast-browsing proxy a la Opera Mini?

Opera Mini is a great browser that works well on feature phones and iPhones. Unlike most browsers, it uses Opera's servers to transcode every page you browse to into a small, easy-to-render chunk ...
4
votes
1answer
1k views

What tool can I use to sniff HTTP/HTTPS traffic?

I'm looking for a command line tool that can intercept HTTP/HTTPS requests, extract information such as: (content, destination, etc.), perform various analysis tasks, and finally determine if the ...
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0answers
70 views

Network connecting trouble shooting

I am trying to connect to the network of my school. With Windows 7 + IE it is not problem at all. I connect to it, no matter what web-page I try to reach, I get forwarded to ...
0
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0answers
206 views

Squid3 failed to response when access certain website

My Host system is Ubuntu 13.10 64bit. I configured Squid3 almost with the default configuration file, except adding acl localnet... and http_access allow localnet. I did not configure cache_dir cause ...
0
votes
4answers
109 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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0answers
174 views

Squid cache problem

If I put in my test_site acl (deny access policy) a site (i.e, www.aaabbbccc.com) which nobody ever accessed and do a squid -k reconfigure, Squid then appears to correctly log the site. I then ...
0
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1answer
164 views

Squid not forwarding my packets proxied from iptables on router

I am trying to make openwrt's iptables from my router to direct to my squid proxy on my machine (since there is no enough space in router's flash memory) but even if I have my squid config ok ( ...
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1answer
198 views

Tunnel HTTP traffic using another machine via SSH

I have this situation: server 1: public ip x.x.x.x private ip 192.168.0.1 server 2: private ip 192.168.0.10 The server 1 can reach the internet with both interfaces: ping -i x.x.x.x ...
1
vote
2answers
337 views

PXE boot via off-site TFTP server

I would like to PXE boot from a TFTP server that is not on my local network. The server is running in a cloud VM. Is it possible to specify the remote server's IP without utilizing DHCP? If not, ...
2
votes
1answer
659 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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0answers
197 views

HTTPS Authentication problem : Polipo

I use internet behind http proxy, and that requires authentication. I tried using polipo to bypass the authenticated proxy to 127.0.0.1:9134. Applying these settings to my browser, works fine for ...
4
votes
1answer
2k views

Have ssh resolve hostnames from config when using ProxyCommand and netcat mode

I'm attempting to set up some universal options for bouncing ssh connections. Here is my ~/.ssh/config file, abbreviated: Host *%via ProxyCommand ssh gateway -W $(echo %h | cut -d%% -f1) %p Host ...
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vote
1answer
158 views

Is it possible to use a VMWare VDI as a proxy for SSH?

I'm currently working for a company with quite strict security measures. 90% of my work takes place on a Linux machine, but to access this machine I first have to connect to a VPN, access a Windows ...
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vote
1answer
2k views

proxy settings ignored by apt-get manager in Ubuntu 13.04

I am using Ubuntu 13.04 in company network, http proxy works fine with my user account but still I cannot install or update anything with apt-get : Proxy Authentication Required ( Forefront TMG ...
4
votes
2answers
509 views

SCP file between 2 servers that go through few servers

I want to copy a file from server-a to server-d but I can access server-d only from server-b and then to server-c. server-a can only access server-b, server-b can only access server-c, server-c can ...
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vote
3answers
2k views

How to change user agent on all http requests made from my machine with Squid intercepting proxy?

I'd like to change the user agent on all HTTP requests made from this machine. It's easy enough to change the user agent in each browser, but other apps also make http requests. In particular, there's ...
0
votes
1answer
122 views

squid 3.1.11-1 - POST issues

I have an issue with my squid on the website : http://www.draw.io I have one schema and I am not able to export it as a PNG (I got a white page on the web browser like the website didn't answer.) ...
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vote
1answer
462 views

How to set up a “child” proxy that doesn't need a “parent” proxy

I run Linux on a laptop that is sometimes on a corporate network which uses an NTLM proxy server, and thus I have cntlmd running on the laptop as a child proxy to connect to the parent (corporate) ...
2
votes
1answer
185 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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2answers
161 views

Mirror localhost:3280/some/long/url to localhost:3000

I have a webservice running on localhost 3280 that exposes Elasticsearch server under /some/long/url. I would like to access Elasticsearch from localhost's port 3000. Can I do this with ...
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1answer
217 views

SSH reverse tunnel works except when I use a VirtualBox instance at one end. Why does VB break SSH?

VirtualBox seems to break my SSH ProxyCommand... here are the details: I want to open an SSH connection from my laptop to desktop over an SSH (reverse) tunnel. I want to do that in one step using ...
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3answers
3k views

CentOS use .pac file as proxy

I have to use a proxy with authentication to connect to the Internet. But I can't find any solution for this. I have modify my yum.conf, with a lot of possibilities: ...
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1answer
46 views

how to setup: proxy with confirmation of rules for browsing internet

I'm trying to achieve something like acceptance of rules before user gets connected to the internet. For example: when users enters address http://google.com (or any other) first thing he will see is ...
2
votes
1answer
261 views

What are the key differences between “SSH tunnels” and “Squid reverse IPs” in regards to web page scraping and private browsing?

What are the key differences between "SSH tunnels" and "Squid reverse IPs" in regards to web page scraping and private browsing? Interested to know if there are any differences between using "SSH ...