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License: Apache License 2.0
Simple program to test servers and clients for TLS/SSL Cipher Suites support
License: Apache License 2.0
tlsprobe - a TLS/SSL testing utility (by Marco Bellaccini - marco.bellaccini[at!]gmail.com) tlsprobe is a simple program that tests a server for TLS/SSL Cipher Suites support (client mode) or, listening for incoming TLS/SSL connections, discovers Cipher Suites offered by a client (server mode). tlsprobe is Free Software, released under the Apache License, Version 2.0. GitHub project page: https://github.com/marcobellaccini/tlsprobe In client mode, tlsprobe just sends ClientHello messages, and, by looking at server's reply (if any), determines whether the selected Cipher Suite(s) is supported or not. tlsprobe builds TLS/SSL messages in a "byte-by-byte" fashion and so does not need any external library (i.e.: no OpenSSL, no GnuTLS, no libNSS). The program supports both single Cipher Suite support check and a full-scan mode (in which it checks for support of all the cipher suites listed in the IANA TLS Cipher Suite Registry - http://www.iana.org/assignments/tls-parameters/tls-parameters.xhtml#tls-parameters-4 ). In server mode, it waits for a ClientHello to arrive and parse it, discovering offered Cipher Suites. tlsprobe provides you with a visual feedback of the security/compatibility level of the various TLS/SSL Cipher Suites, based on Mozilla Server-Side-TLS Recommendations: https://wiki.mozilla.org/Security/Server_Side_TLS . It highlights the discovered Cipher Suites with different colors, depending on the estimated security and compatibility level. Working at TLS/SSL level, tlsprobe is generic and also supports probing non-https services (you just have to specify the right port for the higher-level protocol with the -p option). tlsprobe supports SSL 3.0, TLS 1.0, TLS 1.1 and TLS 1.2. Note for Windows users: yeah, this tool can be run on Windows 10 through Windows Subsystem for Linux. Here follows some usage examples. >>Client mode List all Cipher Suites supported by www.google.com through TLS and SSL protocols (https, tcp port 443): tlsprobe -F www.google.com List all TLS Cipher Suites (i.e.: skip SSL3 scanning phase) supported by www.google.com (https, tcp port 443): tlsprobe -j -F www.google.com Tests if www.google.com (https, tcp port 443) supports cipher suite TLS_RSA_WITH_AES_128_CBC_SHA: tlsprobe -c TLS_RSA_WITH_AES_128_CBC_SHA www.google.com Tests if www.google.com (https, tcp port 443) supports cipher suite SSL_RSA_WITH_AES_128_CBC_SHA (with SSL 3.0 protocol): tlsprobe -c SSL_RSA_WITH_AES_128_CBC_SHA www.google.com List all Cipher Suites supported by Active Directory Domain Controller 10.0.0.5 with LDAP over ssl/tls (ldaps, tcp port 636): tlsprobe -F -p 636 10.0.0.5 >>Server mode Listen for TLS connections on TCP port 443 and print Cipher Suites offered by the client: tlsprobe -S 0.0.0.0 Listen for TLS connections on TCP port 8443 and print Cipher Suites offered by the client: tlsprobe -S -p 8443 0.0.0.0 For more help about possible options, try: tlsprobe --help
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