SSL (Secure Sockets Layer) and/or TLS (Transport Layer Security)

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1answer
62 views

Transport Layer Security for multiple persons

I know that TLS protocol is used to authenticate two persons and when a secure channel is established we can perform a key exchange. My question is if TLS can be used to establish a secure channel ...
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2answers
123 views

the possibility of man in the middle attack [closed]

when was the possibilty to perform man in the middle attack on ssl? is it possible to perform with out session between client and server? can you explain MITM?
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1answer
238 views

SSL what's the client write key used in application layer?

I've used wireshark to watch serveral SSL3.0 traffic and decrypt the messages transfered between client & server. And what I've just found is very strange : AFAIK, the encryption-key, MAC and ...
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2answers
225 views

Does a simple mobile REST API need HTTPS?

Let's say I have a really simple mobile app with a server API. For example some kind of Q&A app, where users answer questions to win some points ('Who wants to be a Millionaire' kind of game). ...
13
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3answers
2k views

Is SSL secure enough for a REST API - has anyone used PGP or AES to encrypt the actual data inside SSL?

Perhaps I'm being overly paranoid, but after reading recent news regarding network security I'm starting to believe that SSL isn't quite enough anymore for sensitive data transmissions. Ref: ...
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3answers
184 views

What are the MitM implications of a stolen client-side private key?

Many VoIP handsets support client-side SSL authentication for auto-provisioning. Unfortunately, some devices must be programmed with their client-side keys. (Keys generated on low-entropy devices are ...
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2answers
275 views

Difference between free ssl and non-free ssl? [duplicate]

I am making a choice between StartSSL and positiveSSL($4.99/yr). I want to know the difference between them. As I know, SSL is used to encrypted the connection between client and server so that data ...
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3answers
446 views

Can my customer's ISP trace who visited my business website?

I own a private business and a web site with a domain name hosted with Godaddy US. I live in Europe. I want to know if the various ISP of my customers in my country can find out who visited my web ...
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2answers
233 views

For DHE_RSA_.. Cipher Suites what is RSA used for?

In addition to achieving PFS with DHE, we want as little as possible to be revealed when the server's private key is revealed. So, what is RSA used for in DHE_RSA cipher suites? What does the server ...
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1answer
197 views

Installing SSL on load balancer and the internal IP

I have a server which has an internal IP (Used to access from local) and an external IP (accessed from Internet and placed in the load balancer). And both will use the same URL ...
0
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1answer
801 views

OpenSSL get key length of all certs [closed]

I am trying to ensure that all certificates in a chain for a host have a key length of 2048 bits. Using openssl s_client, only the key length for that host's cert is given, is there a simple way to ...
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1answer
4k views

Force a specific SSL cipher

Is there a tool or browser addon that will allow you to connect to a HTTPS website using a specific SSL cipher, and view the output? This would be useful when doing a vulnerability analysis and ...
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1answer
226 views

How does the MITM (Man in the middle) attack happen with respect to SQRL

I recently looked into SQRL and was intrigued by its simplicity. At first glance it seemed reliable and its author claimed it was inherently fail-proof against phishing and MITM attacks. But upon ...
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1answer
2k views

Sending Client Certificate to Server

I have a simple question. Is a web browser sends client certificate to the web server on demand(means web server is configured for client authentication and demand the client certificate) or just ...
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1answer
136 views

What are the risks if a weak ciphers are accepted by a technology that uses SSL

The TLSSLed tool found that the host that I use has SSL connection that accepts 8 different TLSv1 and SSLv3 ciphers that are weak by their length (40 bits). How can an attacker exploit this fact?
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2answers
837 views

Client Authentication by certificates in Google APP Engine java

I am writing an application in Google APP Engine java which authenticate the user by its certificate. I have created a self signed certificate using keytool at client side. I also enable the HTTPS ...
1
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1answer
6k views

Speaking Plain HTTP over an SSL enabled Server port [closed]

atm I'm facing a problem with IE and Firefox because they don't redirect my Links correctly. I'm requesting my application via: https://myapp.example.de/context In my webapplication I have links ...
2
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2answers
266 views

How common is Perfect Forward Secrecy in HTTPS clients?

We are hosting an SaaS website and API with the https protocol, both of which are accessed by numerous users with a lot of different browsers and client-side apps. What would happen if I made PFS ...
1
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1answer
3k views

SSLv3 or SSL Certificate Version 2?

Below is the SSLScan output, what does it mean with SSL Cerficate Version 2? Aren't SSLv3 and SSL Certificate Version 2 the same? ...
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1answer
187 views

How does ssl prevent MITM attacks [duplicate]

My understanding of how it works : A victim asks for the public key of a server. The attacker just forwards this request. The server now responds with a certificate which contains the Public key. The ...
0
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3answers
121 views

Does semi-sensitive information demand encryption / security? [closed]

Since it's been requested that this question be rewritten: Is SSL (or some other encryption equivalent) required in the below case? From a small local business website, is there any damage that an ...
0
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1answer
464 views

How to MiTM SSL on a device with no proxy settings

I'm trying to MiTM a device on my network and having some problems. SSLstrip doesn't work because the URL is https://, and I can't use something like Fiddler because the device has no configurable ...
1
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1answer
421 views

Camellia and ECDHE_ECDSA -ECDSA in TLS1.2

I am setting up a server using nginx. I have it working with a self signed ecc certificate and if I connect it reports ECDHE-ECDSA which is what I wanted. But I was also wondering if I could use ...
0
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2answers
334 views

Is HTTPS based on a private key on the user side? [duplicate]

Is HTTPS it based on private key on user side? Where does the user get the private key in the first place? Suppose the user gets the private key by downloading a browser (Chrome, Firefox), then ...
3
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1answer
268 views

Safe way of accepting customer-supplied private keys?

We run a software as a service application that is used by medium to large companies. One part of our application is a messaging service that integrates into the customers own infrastructure. At the ...
2
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3answers
158 views

Website Authenticity/Verification without SSL

Are there any other ways of verifying the web server you're visiting is actually the correct one? For example, if a domain name's DNS was hypothetically hijacked, and users were directed to a phishing ...
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1answer
89 views

how does IE or chrome verifies certificate? [duplicate]

If the HTTPS webserver uses self signed certificate, the web browser warns the user as follow. http://www.sslshopper.com/assets/images/iis7/iis7-self-signed-certificate-8-certificate-not-trusted.png ...
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3answers
822 views

How to Man in the Middle Internal AD Traffic

A coworker asked me why I thought encrypting internal AD Bind communication was important. I said because I follow a standard security practice, but couldn't actually articulate how an attacker would ...
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1answer
197 views

Fundamental differences between digital ID and SSL security certificates

I was reading http://www.symantec.com/verisign/digital-id and http://technet.microsoft.com/en-us/library/dd351044(v=exchg.150).aspx. The articles are treating ssl cert and 'digital id' as if they are ...
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2answers
238 views

Choosing the right X.509 certificate infrastructure for securing LAN communications between a PC and a device

Edit: seems like I was quite hasty when typing in my question at first, so here is an updated version of it. I am developing an application that runs on PCs which are on the same LAN as other ...
2
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0answers
62 views

Creating New Acc in Mac Mail 1st Connect to Server not SSL is uname & pw tx secure?

It appears that whenever you set up a new mail account on Mac Mail on OS X (or iPhone, iPad etc), that as soon as you enter the server and the mail account user name and password, Mac Apple-Mail tries ...
5
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2answers
411 views

Trustworthy Android recovery image that allows rooting?

I have an unlocked but not rooted Android device (Nexus 7 2013 WiFi "flo", legitimately unlocked using fastboot oem unlock from an x86 computer). Neither adb root nor adb shell followed by su let me ...
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3answers
3k views

Why can SSL certificates not be free of charge?

I am a newbie in this field. I am confused with why SSL certificates cannot be free of charge. In my understanding the certificate is just a text file consisting of cryptic numbers installed on a ...
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2answers
660 views

Why are we still using HTTP? [duplicate]

I've been reading a lot of online articles and blogs about advantages of using HTTPS (HTTP over SSL/TLS) and the performance issues involved in deploying a website over HTTPS. What I understood is ...
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0answers
198 views

Should I tunnel multiple TCP connections through a TLS/SSL tunnel or use TLS/SSL for each connection?

I am developing an application that runs on Windows PCs. The application is able to connect to some kind of devices within a LAN. It can create multiple TCP-connections to the device it is connected ...
2
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3answers
964 views

How to mitigate SSL based DDoS attacks?

as you probably know the problem with SSL based DDoS attacks is, that the traffic cannot be analysed and filtered by a DDoS mitigation service provider such as Prolexic, Akamai, Radware, etc. without ...
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2answers
202 views

Securing multiple connections with different protocols all together

I need to secure the communication between an application (runs on any PC and has been designed for Windows) and an external device (runs on UNIX). The application is running on Windows while the ...
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4answers
368 views

Achieving End to End encryption with TLS

The scenario is that a client browser (eg: a user trying to log in to a bank website) needs to be able to view certain sensitive information that resides in a mainframe sitting in the Internal network ...
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3answers
552 views

TLS 1.2 Server certificate and signature_algorithms

In the specification for TLS 1.2, it says the following: If the client provided a "signature_algorithms" extension, then all certificates provided by the server MUST be signed by a hash/signature ...
0
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1answer
181 views

Can I use a CDN for static content without sacrificing SSL keys?

I would like to use a CDN for the static content of a website. But obviously I do not wish to share my SSL key with any external service. What are my options? An ideal solution would be to link to ...
0
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1answer
258 views

Are web sites with non-https login pages secure? [closed]

I was looking at weibo.com (chinese equivalent of twitter). I was surprised to see that their login page (http://www.weibo.com/) or forgot password ...
0
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2answers
111 views

SSL/TLS Question [closed]

I am currently working on my SSL/TLS assignment and I got a question to ask. What is the use of a login password since it is not needed for establishing secret communication between your computer and ...
0
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1answer
112 views

vsftp encryption algorithm

I want to configure VSFTP for ftps protocol and it has some choices to select the encryption type: tlsv1, sslv2, sslv3. I read that tls version 1 has some security issues but in the man page it says ...
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2answers
66 views

Using SSL for a single request

I want to use distributed cluster configured like: xx.resource.server.com. xx - can be anything from aa to zz, most of the requests will be one time. I need the connection to be secure between client ...
1
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1answer
213 views

Long-lived SSL connections to dynamic IP addresses

I'm seeing some odd behaviour on my proxy server logs since I started blocking direct outbound connections to port 443 (thus forcing applications to use the proxy server for HTTPS connections). I'm ...
1
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0answers
473 views

Safe communication via rest api between two known servers

i would like to have some advice on the following scenario: I'm using kinvey as backend but because it doesn't provide the ability to run custom code i have set up another server. So basically when x ...
2
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2answers
329 views

https://www.truecrypt.org forwards to http://www.truecrypt.org

Why is the site doing this? Is that a security flaw? In general, I'd be wary about using a http site instead of a https, although regarding truecrypt specifically, I came to trust it. I wonder why not ...
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2answers
294 views

Can I trust large companies like Google not to store failed password attempts?

Let's say, for example, that I accidentally entered my Microsoft account password instead of my Google account password when logging in to some Google web service. After getting an error message, I ...
0
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1answer
116 views

SSL and Strategy to prevent destination URL from being revealed

Googling the subject "sniffing out / spying on SSL secured communications" one finds many references to being able to make some good guesses about the "target destination" once the path length is ...
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5answers
2k views

Security of an initial redirection from http://example.com to https://example.com

Suppose that http://example.com/<foo> systematically redirects to https://example.com/<foo>. I enter http://example.com in my browser's URL bar, and I see a page load and the URL bar now ...