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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Using free subdomains to circumvent web filtering systems

(I was told that this was the place to ask this by someone from Webmasters, if I've got it wrong again please give me a chance!) I'm running a personal proxy service for the use of myself and some of ...
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0answers
28 views

Is it possible to use Whatsapp as a proxy on Android? [closed]

My carrier has made all Whatsapp traffic free from billing. I was simply curious if it was possible to utilize Whatsapp as a traffic proxy for other internet traffic, or whether their end-to-end ...
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1answer
53 views

Sniffing external networks from a public network (place)

There is something that I can not understand. If you are preparing, building up an attack from a public place (coffee shop, restaurant ect.). How can you be tracked by law enforcement? I'm asking ...
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29 views

Rogue WPAD server attack

Today I encountered something I have certainly not seen before first hand. Our IDS blocked some outbound traffic attempts from 5 servers with no WAN access. This traffic was leading to an inactive ...
52
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4answers
4k views

What security risks are posed by software vendors deploying SSL Intercepting proxies on user desktops (e.g. Superfish)

There has been quite a bit of concern noted relating to the recent discovery that Lenovo are pre-installing a piece of Adware (Superfish) which has the capability of intercepting SSL traffic from ...
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18 views

Proxpy- certificate issue

I am using proxpy, a proxy server written in Python. It comes with its certificates and after installing one of the certificates in Firefox, I got 'Connection is untrusted'. Any help in this regard ...
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2answers
45 views

How to force clients to browse Internet through Squid Proxy

I am using Windows Server 2012 in which I have shared internet through NAT to a secondary LAN card using routing and remote service. The problem is that when my clients are browsing through proxy ...
2
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1answer
121 views

Intercepting HTTPS Android app traffic

I'm trying to intercept Android application traffic from my Android phone....Basically what worked before was that i had simply installed fiddler proxy on my PC, exported the root certificate (and ...
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3answers
57 views

Secure tunnel set up in an office environment

Suppose I am a rogue employee and I want to syphon some sensitive data out of the office and I only have office internet access for this. My office internet access needs to go through a proxy server, ...
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0answers
34 views

Securing elasticsearch behind a reverse proxy

I intend to run an Elasticsearch index to store a persistent copy of data retrieved from an external service. My plan is to host the Elasticsearch index on AWS, and have it listen on 127.0.0.1 only. I ...
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3answers
133 views

How to intercept and analyze mobile SSL application traffic?

What is the best way to analyze requests sent by a mobile application over SSL? The communication protocol is not necessarily HTTP/S so intercepting them with BURP/ZAP/Fiddler or any other HTTP proxy ...
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2answers
69 views

Security of HTTP proxies

If POST requests are being made to a website via a browser using an HTTP proxy from sslproxies.org, is it possible to trace the origin of those AJAX requests without having access to the proxy being ...
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1answer
53 views

How can I intercept XMPP traffic on Android?

I have been learning about security testing on Android apps, and to intercept traffic I was using Burp Suite. I know it works perfectly for HTTP/HTTPS traffic, but most of the messenger apps are using ...
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0answers
52 views

HTTP GET Request to a webpage that does not exist [closed]

I am seeing a machine is making a HTTP GET request to webpage (ex: www.sample.com/1.png), proxy devices respond with status code 407 (proxy auth required). But when I checked for the site via ...
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1answer
69 views

Proxies, and how they can be traced

When you make an connection with a proxy and you do something shifty to a server, the people working the server could just call up all ISP's and then your ISP sees the last connection you made was to ...
2
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1answer
121 views

Can a corporate proxy downgrade an SSL handshake?

At work, I'm behind an NTLM Proxy. When the SSL Poodle flaw came out, I hardened the configuration of my private server, and found out that even if the client and server shared common ciphers, some ...
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1answer
208 views

Interpreting anti-hacker-alliance analysis [closed]

One of security tools available for web browsing is (http://anti-hacker-alliance.com) Please find below two readings: a) Reading for IP 205.x.x.x that state among other-things "you are using proxy ...
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1answer
89 views

How can I convert a Windows certificate into a PEM format, that includes the chain + root?

I need to import a certificate into a Cisco Ironport for Web SSL inspection. The only input format supported is PEM. Based on my research the PEM format does support all certificates in the chain, ...
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1answer
49 views

Would a VPN with changing configs do the same job as different VMs

I was reading this question. So my question: Would using a VPN and swapping out configuration files that change your IP address mask the same as using different VMs?
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1answer
80 views

Standard for Determining the Anonymity Level of a Proxy

Is there a standard for determining the anonymity level of a proxy? After reading various articles, I have come to the conclusion that you determine the anonymity level by analyzing the headers but I ...
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1answer
64 views

Iphone app not allowing proxy

Hi everyone I am interested in how a banking app works, especially the way it handles https requests. So I installed one, set my proxy settings, started burp suite and expected it to work. As you may ...
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1answer
103 views

MITM faking certificates

I am looking at the theory behind MITM attacks in order to see some unencrypted packets from the 3DS. From research here is what I understand so far: 3DS > Proxy > Nintendo server I am going to try ...
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1answer
55 views

VPN Tunnel Routing Question

I'm a little confused about how VPNs work ... I read that they provide an end-to-end encrypted tunnel between you and whoever you're trying to connect to but is that actually the case? VPNs let you ...
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2answers
86 views

MITM on program with no proxy settings

I'm trying to inspect the traffic of a program (which is running on my computer) that uses SSL over TCP to a non-standard port. The traffic may or may not be HTTP traffic, likely isn't. Neither ...
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1answer
127 views

iptables intercept received packet with proxy and then forward to destination

Lets say I receive internet through my eth1 port and share it via hotspot to other devices (wlan0 port) [internet]----(eth1)[my computer](wlan0 hotspot) | ...
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1answer
678 views

Can wifi network administrators see through proxy servers?

I've looked at a lot of VPNs, and "what's my ip address" sites confirm that outsiders can't tell where I really am when I'm using them, but I haven't been able to get my own WiFi yet, so I don't know ...
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2answers
568 views

Intercepting SSL traffic on Android app

I am trying to intercept SSL traffic from my Android app to test the security. I am using certificate pinning in the hopes I can prevent people from snooping. I have tested by configuring ProxyDroid ...
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2answers
62 views

making online transactions over proxy

So I went over quite a lot of topics here and on the internet.. but I still can't seem to completely understand this issue. How secure really are services like proxies, VPN or VPS? VPN is promoted ...
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2answers
162 views

Decrypting TLS Traffic

Context: I want to reverse engineer a protocol in place for the Nintendo 3DS. The implementation however, uses TLS, which makes it difficult to reverse engineer. I'm currently able to sniff packets ...
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1answer
375 views

If I connect to VPN through proxy, who can see what?

I try to understand what happens when I use an HTTP(S) proxy in my OpenVPN client configuration. What's the advantage of an HTTPS proxy over plain HTTP? In any case the encryption takes place on the ...
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2answers
142 views

I'm wondering how I hide my identity online well

what are the different ways to become anonymous. Is quicksilver a good email for that? What are the different options? I know about proxies, Tor, and VPNs. Should I do all three? I like computers but ...
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3answers
114 views

Confusion over a firewall and proxy

A proxy usually controls HTTP(S) traffic going outbound. IE it can be blocked, and so forth. How is this different to a firewall working on port 80/443? Also, if a firewall is to control outbound ...
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1answer
252 views

Privacy of web surfing by Free gate

I am connected to the internet in the university where I don't want the administrator or any organization to find out some of the websites and contents I check in them. I'm afraid that they might ...
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2answers
60 views

How do I prove my proxy is scanning for viruses?

I have a proxy server in my DMZ that among other tasks has the role of scanning incoming messages - email, SOAP - for viruses. How do I prove to my team leader that it is performing this role on all ...
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2answers
67 views

Which web browser supports a proxy in proxy configuration? [closed]

Normally you are forced to use a corporate proxy. This is necessary for the company to protect against the internet. But a side effect is, that the internet usage of every proxy user can be monitored ...
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1answer
66 views

Pivoting through XSS

I'll start off by saying this is a purely academic question; I'm trying to fill some gaps in my knowledge. If a website is vulnerable to XSS, and the target host is another machine that can browse to ...
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2answers
154 views

Why the Websense blocks same site when used with http & not when used https? [closed]

I have been working in a IT firm. I have access to some social sites. When I try to open site Links in mail (that are having http://), the websense prompts me that the access is blocked. However, when ...
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2answers
155 views

Will the cookies crumble when it comes to proxy servers?

One important use of proxy servers as I understand reading Wikipedia is to keep you anonymous from other servers by acting as a middle-man. If that is indeed the case, consider the following ...
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127 views

Finding the IP address origin of malware attacker behind VPN and proxies

I have a client that wants me to begin doing research on finding the origin of a persistent attacker to their network and employees. I haven't gotten the specifics yet, but I'm trying to think of ways ...
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2answers
497 views

How to mask my IP using a proxy server? [duplicate]

I heard that it is possible to use a proxy server to mask my true IP address and surf anonymously online. Also I have a list of valid Proxy IPs and corresponding ports. How can I use them to get ...
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1answer
95 views

What does proxyexec + cagefs.server mean in the e-mail X-Source-Args?

I've the following headers in the e-mail which I've received as spam: X-Source: X-Source-Args: /usr/sbin/proxyexec -q -d -s /var/run/proxyexec/cagefs.sock/socket /bin/cagefs.server X-Source-Dir: ...
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2answers
42 views

what is the cons and pros of using webfiltering based on cloud security?

nowadays some vendors offering web filtering based on cloud security , where your web traffic will be forwarded to vendor cloud to be filtered and controlled at the vendor proxy , the vendor will ...
3
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1answer
196 views

How the whatismyip knows real ip address?

I just realize that this website knows the real ip address even if you use proxy ,i found this question, so start to test every possible way,first, this website don't have a X-Forwarded-For or ...
3
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2answers
127 views

How to get rid of an Ad bot?

The issue started due to setting up a proxy server on a PC connected to my network. I then realized that all of my devices that connected to the network, including PCs and phones, are all infected by ...
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3answers
3k views

How trustable are third party root certificates?

I recently tried to use Fiddler2 from a third-party vendor Telerik. While decrypting the HTTPS traffic of my network, it asked me to install its own root certificate in my Windows operating system: ...
2
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2answers
634 views

Squid proxy and VPN software

I have some questions about squid proxies, we set a squid proxy server to block certain web sites for users. and some users only can access one website that related to our work.but after install some ...
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1answer
179 views

How can they catch me, how can i hide my self [duplicate]

Im using a website and somehow they can find out that i am using a proxy. My first question is how can they do. How can they find out this? And Second what can i do i mean how can i hide my self, is ...
2
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1answer
123 views

Connecting to public proxy servers

I use public proxies a lot. I was wondering, is it possible that they can modify the html and send back malicious javascript, etc?
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1answer
647 views

internal proxy server vs DMZ proxy server

What would be reason for placing a proxy server in a Demilitarized Zone (DMZ)? I understand that a DMZ is a separate network to your internal network (lies inbetween internal network and firewall). I ...
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2answers
159 views

Installing self-made cert as trusted CA on windows?

I'm looking into using mitm-proxy, but part of the process of filtering/snooping SSL is that you must generate and install a root cert as a trusted CA, so that mitm-proxy can generate and throw out ...