The word "proxy" is mostly used as short for "proxy server", which is a server that acts as an intermediary between a workstation user and the Internet so that the enterprise can ensure security, administrative control, and caching service.

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1answer
383 views

How to test a proxy for tcp and udp traffic? [closed]

Is there a simple way to test a proxy to determine if it is correctly forwarding TCP and UDP traffic? An ideal method would be script-able.
1
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1answer
815 views

OpenVPN through company proxy and surfing history

Been trying to find an answer to no avail. Probably I just don't understand the terminology... So if anyone may shed some light in plain English, that would be awesome. I connect to a paid VPN ...
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1answer
545 views

Problems configuring Webscrab to intercept trafic from localhost(Webgoat) [closed]

Problems configuring Webscrab to intercept traffic from localhost(Webgoat). I am trying to go through the Webgoat tutorial and at one point I need to use Webscrap. I configured the proxy though ...
2
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1answer
501 views

Proxy server and IP address blockade

i am in china. so i use web freer to use blocked sites like face book and you tube. we use broadband connection provided by our university. some times the server goes too down and we can not use ...
2
votes
1answer
321 views

Route traffic from iPhone to desktop and back

I have some iOS app to pentest, and the target server is accessible only through the jailbroken iPhone's APN. My problem is, that I want to configure the traffic in such way so I can intercept and ...
1
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2answers
394 views

Tor - chain of connected nodes?

For a long time now I have been wondering how to find out where you actually connect to with Tor. The only thing you can do in Vidalia is show a Network Map of all available Nodes worldwide, which is ...
1
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2answers
980 views

Best practices for operating a Bitcoin-Qt client regarding netwok privacy?

As privacy is part of security, I know there is a Bitcoin SE here but they couldn't answer my question so I hope it's appropriate to ask it here. I don't ask about how to secure my wallet on my ...
10
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1answer
695 views

Is Nokia's “institutional MITM” of SSL traffic vulnerable to CRIME attack?

It's recently been in the news that some Nokia phones proxy all traffic, including SSL connections, through a Nokia proxy. This is effectively an "institutional MITM" attack on users those phones. ...
10
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4answers
1k views

Can real end-to-end SSL encryption be made?

I've read the various questions tagged [ssl] and [mitm] and [proxy] and I couldn't find a duplicate. I've got a very precise question but first I need to give some background. Basically I'm very ...
3
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1answer
463 views

Burp proxy between non proxy aware device

I want to intercept traffic between a Ethernet connected device, which is not proxy aware and modify/inject javascript. Conventionally when testing webapps I would use burp. Can burp sit on my ...
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6answers
405 views

Secure internet access while traveling

Given the risks of shared wi-fi as stated here, here and here, I would like to ask what are good practices for someone who is always traveling. While having your own wi-fi with a strong WPA2 password ...
1
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3answers
247 views

How this kind of mechanism considered as vulnerability?

From following news, http://thehackernews.com/2012/12/etsy-for-iphone-loophole-allows.html Someone just setup a proxy to intercept traffic between browser and https protocol, then it called ...
5
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2answers
108 views

Is it actually feasible or useful to use a high number of proxy servers?

In the movies, it's not uncommon to see the digitized global map projected on a huge wall with a line of light (presumably a user's connection) travelling back and forth all over the globe in a ...
1
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1answer
363 views

RADIUS proxy chains

RADIUS is a widely deployed remote authentication protocol. I'm looking here at its use in wireless roaming. The RADIUS protocol allows for proxies and chains of proxies: |CLIENT|<->|Access ...
2
votes
2answers
2k views

Is it possible to spoof the last proxy of an X-Forwarded-For Header?

I'm using a firefox plugin https://addons.mozilla.org/en-US/firefox/addon/x-forwarded-for-header/ to spoof the X-Forwarded-For Header to 8.8.8.8. For the following php page: echo ...
14
votes
3answers
8k views

Authenticating a Proxy server over HTTPS

When browsing to a website over HTTPS, the web browser typically does a lot of work in the background - negotiating a secure channel, validating the site's certificate, verifying the trust chain, etc. ...
1
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2answers
350 views

Is ProxyPass more secure than directly hosting PHP site?

Here's two possible ways, Use Apache and PHP module to interpret a php file Use nginx's ProxyPass with fastcgi So, would passing the request to another server with ProxyPass more secure than a ...
0
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1answer
146 views

Proxy Non-HTTPS logins through EC2

I've been thinking a lot about password security these days, and have been becoming more and more hesitant to use services that have login forms that are not on HTTPS. As I was researching security, ...
2
votes
3answers
1k views

How to block the websites on client machines

In our office we are blocking sites like Facebook, Twitter etc.The problem is that some of the users bypass our proxy and firewalls through external proxy sites like www.youhide.com or ...
2
votes
1answer
509 views

Open source or common implementations for reverse proxy web application security

I realize there is already a question similar to this one, but this is somewhat of a follow-up. I understand that a reverse proxy server by itself is hardly useful as a web app security measure ...
6
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4answers
16k views

Advanced techniques for detecting a proxy/getting original IP

In what manner can a website detect my original IP address, even though I'm using a proxy server? I've noticed this with a few sites. There are four proxy methods I've used: Firefox with a proxy ...
6
votes
3answers
2k views

SOCKS proxy security concerns

As claimed, "A socks proxy simply transfers data from a client to a server, not penetrating into this data contents (therefore it can work with HTTP, FTP, SMTP, POP3, NNTP, etc.)", I really can't buy ...
1
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2answers
1k views

Can an insecure wifi connection block users who download a lot, from say: torrents or usenet? [closed]

Can an 'insecure community network' have automated features to block internet or slow speeds on computers which download a lot, from say: torrents or usenet? I have two computers and one has ...
1
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1answer
218 views

How does http://un****-us.com/ work?

There is this site un**-us.com which supposedly allows you to bypass ISP rules such as content restriction on a particular area. Now , it is well known that routing your traffic through a web proxy ...
4
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2answers
2k views

Does Java applets reveal the real IP address, even when using proxy or vpn?

Can a Java applet reveal the original client IP address, when browsing through a proxy or a VPN? Why?
0
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2answers
438 views

Anonymous proxy over SSL [closed]

Can you name any anonymous proxy software that don't use VPN connections? Basically, I'm analyzing different encrypted traffic and now I need to analyse a simple anonymity proxy traffic. I'm analyzing ...
2
votes
3answers
1k views

How to intercept an application that bypasses local proxy

I am behind a corporate proxy and the application that i have to test will work only if it is given an exception for using proxy server(i.e it is added to the exceptions list of the sites that do not ...
4
votes
2answers
6k views

How do you properly setup Tor on Windows 7?

How do you properly setup Tor on a Windows 7 box to guarantee that ALL connections will run through Tor?
2
votes
2answers
702 views

Interesting article on a vulnerability found in Tor

This article describes how French researchers compromised users using Tor. I'm not sure I fully understand or agree with it. I don't see what Bit Torrent has to do with anything? I mean they start out ...
1
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2answers
537 views

How to secure the connection between the proxy and application

I have designed a framework for my application where I have a proxy to communicate with the outside world. The connection between proxy and the application is encrypted using SSL. But the connection ...
6
votes
2answers
1k views

How can end-users detect malicious attempts at SSL spoofing when the network already has an authorized SSL proxy?

I'm working on one client's network where they have enabled HTTPS authority spoofing on their proxy. This allows them to effectively perform a man-in-the-middle attack to decipher all outgoing ...
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1answer
190 views

What is the interest of Reverse Proxy? [closed]

I have read many explanations on reverse proxy I still don't understand the interest. Could someone really explains in plain english
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3answers
401 views

Client side scripts through proxies

If you're trying to hide your IP address using VPN/proxies can a website using client side scripting record your real ip? If yes is there any alternative to blocking all scripts as that breaks ...
0
votes
3answers
590 views

Proxy Server options for school administrators [closed]

I want to set up a proxy server for a school to prevent users to log-in to site like Facebook, Youtube, etc. I have no idea how to do this, so I´d really appreciate your help.
3
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3answers
2k views

How can reverse proxies be used to bypass acceptable use policies of a company?

I am wondering how reverse proxies can be used to bypass company acceptable use policies? What can be done to prevent it?
2
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2answers
142 views

Security of asymmetrical decrypting proxy

I'm thinking about the safest possible way to store secure data (eg. Credit Card numbers) with a requirement of sending them in clear text to third party API (so hashing doesn't come into play). I've ...
2
votes
1answer
245 views

How confident is MIME blacklisting on a proxy server?

We are blacklisting a number of MIME types on our proxy server so users can't download certain file types, for example, executables. Could it be possible that somehow, a malicious server can trick a ...
1
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1answer
361 views

DNS query through squid? [closed]

My IDS picked up our squid proxy server doing a dynamic DNS request. I wasn't aware squid passed DNS requests from the client to the internal DNS server. Is this possible? Snort Alert: ET POLICY ...
2
votes
2answers
1k views

Protection against DDoS when using proxies

We're trying to protect some sites that are primarily located in Asia using distributed caching. These sites commonly come under DDOS attacks. We are using fail2ban, but still have two problems: ...
5
votes
3answers
3k views

How do I check that I have a direct SSL connection to a website?

I always thought that if I had an SSL connection there would be no MITM attacks. Now it appears that isn't true (see comments in this question Is it okay from a security perspective to read foreign ...
2
votes
1answer
122 views

ISP security compared to enterprise

I've just started reading IT Security, and found some interesting reads on man-in-the-middle and different types of "attacks" that could be used by an enterprise to intercept communications on their ...
0
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2answers
474 views

How to build a secure socks tunnel?

I was using a socks proxy to access websites blocked by my ISP, now it don't work any more in an strange way. Using the proxy is same as not using it! (i.e. I can access open sites but filtered sites ...
4
votes
2answers
3k views

Is it possible to connect to a proxy with an ssl (or otherwise encrypted) connection?

What i want to know is whether it is possible to connect to a proxy with an ssl (or otherwise encrypted) connection? (I'm suspecting this is possible because TOR encrypts user connections to it's ...
0
votes
1answer
561 views

Tracing Proxy Easy or Hard for a Normal Website?

I know a membership website which is getting quite popular among people day by day. Now I see people are making more than one accounts by using proxies. They should allow multiple accounts from the ...
0
votes
1answer
152 views

Best practice for selective opening of ports on network gateway

Our network is currently isolated from the outside by a Linux box, running iptables and Squid to control web access. By default we deny all outgoing traffic from all IP's, to force Web traffic ...
3
votes
2answers
698 views

Reveal the True IP of a User

Is there any best practice method (and preferably documented) way of revealing the True IP of a user using a HTTP(S) connection? I.e.: To be able to uncover the true IP from transparent as well as ...
6
votes
4answers
1k views

How to keep secure while browsing on open wifi when SSL VPN is blocked?

After a recent visit to a hotel I was surprised to discover that they blocked access to my OpenVPN server. I often use this as a way to secure my internet traffic when I am on public wireless. ...
3
votes
1answer
286 views

Could somebody explain connect loop DoS?

I'm trying to understand this vulnerability. How can I reproduce this?
3
votes
2answers
666 views

Securely expose WebService from Enterprise Network to Internet Client

(coming from stackoverflow) Are there any standards (or certified solutions) to expose a (Web-)Service to the internet from a very security-sensitive network (e.g. Banking/Finance)? I am not ...
6
votes
7answers
940 views

HTTP Proxy vs bump-in-wire

If I'm an administrator of a corporate network, I could use an HTTP proxy to examine outgoing connections to monitor what websites my employees are going to, and terminate connections based upon ...