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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2answers
427 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
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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
178 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
360 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
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3answers
527 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
1k 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
133 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
222 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
337 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
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2answers
965 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
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3answers
2k 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
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1answer
117 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
466 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 ...
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2answers
2k 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
433 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
125 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 ...
2
votes
2answers
636 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 ...
5
votes
4answers
887 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
262 views

Could somebody explain connect loop DoS?

I'm trying to understand this vulnerability. How can I reproduce this?
3
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2answers
577 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
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7answers
835 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 ...
6
votes
2answers
3k views

Is there anything like a known proxy server IP list/database?

I'm looking for something like a known proxy servers IP list (text, comma seperated or database based). Do you happen to know if anything like that exists? Free would be nice. I doubt it because these ...
8
votes
3answers
4k views

Proxy vs. Firewall

I understand that very simply put a proxy is a sort of 'man in the middle' allowing/denying access to certain services/resources. Strictly in terms of security (I mean here privacy, parental control ...
1
vote
3answers
409 views

Install my own proxy

My school network has blocked a lot of webpages, including TeamViewer, which I need. The IT department told me to find a proxy, because it was their ISP who had blocked the sites. To connect to the ...
2
votes
1answer
101 views

WebProxy configuration … Which threat could apply?

I need some help to identify possible (and rational) threats that could apply to that part of IT infrastructure (WebProxy). I have a webproxy for my users, which behave like a classic webproxy and ...
3
votes
3answers
10k views

How to force ALL programs to use my Proxy?

I have a local proxy on my PC. (localhost:8888) But unfortunately there are many programs which are not able to go through this proxy. So how can I force all my programs to go through my local proxy ...
8
votes
3answers
955 views

How do I log all my internet-connections

How can I (maybe with a proxy, but I need names of programs!?) log all my interactions of programs with my Internet connection, so that I could see WHAT a program is sending and WHAT it is receiving. ...
6
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1answer
3k views

How is tunnelling SSH through Poxytunnel/HTTPS different from doing it through SSL with Stunnel?

In an answer to What is the difference between SSL, TLS, and HTTPS, it's said that HTTPS is HTTP over SSL/TLS. That is, an SSL/TLS connection is established first, and then normal HTTP data is ...
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3answers
572 views

Benefits to using EV certificates with a privately hosted Certificate Authority

For companies that have implemented their own internal CA, is there any benefit to configuring that CA to issue an EV certificate? Do any SSL Proxies (like Bluecoat) mimic the EV certificate of the ...
1
vote
3answers
715 views

Reverse Proxy Secure Configuration

I have a Forefront TMG 2010 acting as a reverse proxy: I can force HTTP*S* between internet clients and TMG. I can force HTTP*S* between TMG and my web servers. From a security point of view, it ...
5
votes
4answers
1k views

MiTM - Non-HTTP TLS

I'm doing some research into the privacy of various iOS applications. My main source of data is via wireshark or Burp (HTTP/S proxy). This has been rather sucessfull for MiTM for decrypting HTTPS ...
3
votes
3answers
144 views

Warn about specific CA in Firefox

Consider a setup where all HTTP/HTTPS traffic goes through a proxy. The certificate of this proxy must be trusted by all browsers (in this case, Firefox). This certificate replaces the original ...
9
votes
2answers
1k views

Bypassing a reverse proxy/NAT

Reverse proxies and NAT would seem to obscure a network behind such technologies to the point where it would be hard if not impossible to identify ports open and services running. Given that many ...
3
votes
2answers
340 views

loadbalancer, 2 webserver, 1 webserver hacked , how to tunnel out?

Lets say I have one load balancer (HAProxy) and two web servers one gets hacked. Is the attacker able to make outgoing connections when the web servers have no direct internet access (only ubuntu ...
15
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5answers
8k views

Does using an http proxy completely hide my real IP address?

If I obscure my IP by going through a free http proxy and visit a page, will that site's admin ever be able to find out my true IP or anything related to my true connection/info?
25
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8answers
12k views

Can my company see what HTTPS sites I went to?

At work my company uses internet monitoring software (websense). I know if I visit a https ssl-encrypted site (such as https://secure.logmein.com) they can't see what I'm doing on the site since all ...
5
votes
3answers
3k views

Any good free SSL proxy on windows?

I'm looking for SSL proxy capable of dumping requests. I want to test custom browser against SSL-MITM attacks. I'm able to re-route all traffic ongoing from browser to machine with proxy. ...
3
votes
2answers
721 views

What is your approach to handling Guest Internet access?

Suppose you're a company that uses a web proxy to block objectionable content on your corporate network, and this technology may cause issues with some 3rd party VPNs. Or perhaps this 3rd party is ...
16
votes
6answers
2k views

Anonymous web browser. Is it real?

Do anonymous browsers work? What principles do they use? Can I use them to test access to my web site? Can I detect if a visitor is using one? What is the different between traditional and anonymous ...
10
votes
6answers
363 views

Should we configure all devices to never request SSL 2.0, and reject it if offered?

In an effort to reduce man in the middle attacks, when will it be (or was it) an industry accepted practice to reject SSL 2.0 connections on the client and server side? Is configuring this on a proxy ...
9
votes
1answer
4k views

Is SOCKS secure?

In order to create a VPN, I open an SSH tunnel with a command like ssh -D 9000 user@host, and then I set my system's proxy settings to use SOCKS5 through localhost:9000. Well, setting up my home ...
8
votes
4answers
2k views

How effective are reverse proxies as a web application security measure?

How effective are reverse proxies as a web application security device? Which types of threats do they mitigate against and which don't they? For example are they more effective in preventing ...
8
votes
5answers
987 views

Creating tunnel with most ports closed?

How can I create a proxy tunnel from a network that has all ports but port 80 closed? I guess I'd have to bind SSH on my server to port 80, but would that introduce problems to my home network since ...