testssl.sh is a free command line tool to test SSL security, it checks a server’s service on any port for the support of TLS/SSL ciphers, protocols as well as recent cryptographic flaws and more.
testssl.sh is pretty much portable/compatible. It is working on every Linux, Mac OS X, FreeBSD distribution, on MSYS2/Cygwin (slow). It is supposed also to work on any other unixoid systems. A newer OpenSSL version (1.0) is recommended though. /bin/bash is a prerequisite – otherwise there would be no sockets.
Features to Test SSL Security in testssl.ssh
- Clear output: you can tell easily whether anything is good or bad
- Ease of installation: It works for Linux, Darwin, FreeBSD and MSYS2/Cygwin out of the box: no need to install or configure something, no gems, CPAN, pip or the like.
- Flexibility: You can test any SSL/TLS enabled and STARTTLS service, not only webservers at port 443
- Toolbox: Several command line options help you to run YOUR test and configure YOUR output
- Reliability: features are tested thoroughly
- Verbosity: If a particular check cannot be performed because of a missing capability on your client side, you’ll get a warning
- Privacy: It’s only you who sees the result, not a third party
- Freedom: It’s 100% open source. You can look at the code, see what’s going on and you can change it. Heck, even the development is open (github)
Usage of testssl.sh SSL Security Testing Tool
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userid@somehost:~ % testssl.sh testssl.sh <options> -h, --help what you're looking at -b, --banner displays banner + version of testssl.sh -v, --version same as previous -V, --local pretty print all local ciphers -V, --local <pattern> which local ciphers with <pattern> are available? (if pattern not a number: word match) testssl.sh <options> URI ("testssl.sh URI" does everything except -E) -e, --each-cipher checks each local cipher remotely -E, --cipher-per-proto checks those per protocol -f, --ciphers checks common cipher suites -p, --protocols checks TLS/SSL protocols (including SPDY/HTTP2) -y, --spdy, --npn checks for SPDY/NPN -Y, --http2, --alpn checks for HTTP2/ALPN -S, --server-defaults displays the server's default picks and certificate info -P, --server-preference displays the server's picks: protocol+cipher -x, --single-cipher <pattern> tests matched <pattern> of ciphers (if <pattern> not a number: word match) -c, --client-simulation test client simulations, see which client negotiates with cipher and protocol -H, --header, --headers tests HSTS, HPKP, server/app banner, security headers, cookie, reverse proxy, IPv4 address -U, --vulnerable tests all vulnerabilities -B, --heartbleed tests for heartbleed vulnerability -I, --ccs, --ccs-injection tests for CCS injection vulnerability -R, --renegotiation tests for renegotiation vulnerabilities -C, --compression, --crime tests for CRIME vulnerability -T, --breach tests for BREACH vulnerability -O, --poodle tests for POODLE (SSL) vulnerability -Z, --tls-fallback checks TLS_FALLBACK_SCSV mitigation -F, --freak tests for FREAK vulnerability -A, --beast tests for BEAST vulnerability -J, --logjam tests for LOGJAM vulnerability -D, --drown tests for DROWN vulnerability -s, --pfs, --fs, --nsa checks (perfect) forward secrecy settings -4, --rc4, --appelbaum which RC4 ciphers are being offered? special invocations: -t, --starttls <protocol> does a default run against a STARTTLS enabled <protocol> --xmpphost <to_domain> for STARTTLS enabled XMPP it supplies the XML stream to-'' domain -- sometimes needed --mx <domain/host> tests MX records from high to low priority (STARTTLS, port 25) --ip <ip> a) tests the supplied <ip> v4 or v6 address instead of resolving host(s) in URI b) arg "one" means: just test the first DNS returns (useful for multiple IPs) --file <fname> mass testing option: Reads command lines from <fname>, one line per instance. Comments via # allowed, EOF signals end of <fname>. Implicitly turns on "--warnings batch" partly mandatory parameters: URI host|host:port|URL|URL:port (port 443 is assumed unless otherwise specified) pattern an ignore case word pattern of cipher hexcode or any other string in the name, kx or bits protocol is one of the STARTTLS protocols ftp,smtp,pop3,imap,xmpp,telnet,ldap (for the latter two you need e.g. the supplied openssl) tuning options (can also be preset via environment variables): --bugs enables the "-bugs" option of s_client, needed e.g. for some buggy F5s --assume-http if protocol check fails it assumes HTTP protocol and enforces HTTP checks --ssl-native fallback to checks with OpenSSL where sockets are normally used --openssl <PATH> use this openssl binary (default: look in $PATH, $RUN_DIR of testssl.sh) --proxy <host>:<port> connect via the specified HTTP proxy -6 use also IPv6. Works only with supporting OpenSSL version and IPv6 connectivity --sneaky leave less traces in target logs: user agent, referer output options (can also be preset via environment variables): --warnings <batch|off|false> "batch" doesn't wait for keypress, "off" or "false" skips connection warning --quiet don't output the banner. By doing this you acknowledge usage terms normally appearing in the banner --wide wide output for tests like RC4, BEAST. PFS also with hexcode, kx, strength, RFC name --show-each for wide outputs: display all ciphers tested -- not only succeeded ones --mapping <no-rfc> don't display the RFC Cipher Suite Name --color <0|1|2> 0: no escape or other codes, 1: b/w escape codes, 2: color (default) --colorblind swap green and blue in the output --debug <0-6> 1: screen output normal but keeps debug output in /tmp/. 2-6: see "grep -A 5 '^DEBUG=' testssl.sh" file output options (can also be preset via environment variables): --log, --logging logs stdout to <NODE-YYYYMMDD-HHMM.log> in current working directory --logfile <logfile> logs stdout to <file/NODE-YYYYMMDD-HHMM.log> if file is a dir or to specified log file --json additional output of findings to JSON file <NODE-YYYYMMDD-HHMM.json> in cwd --jsonfile <jsonfile> additional output to JSON and output JSON to the specified file --csv additional output of findings to CSV file <NODE-YYYYMMDD-HHMM.csv> in cwd --csvfile <csvfile> set output to CSV and output CSV to the specified file --append if <csvfile> or <jsonfile> exists rather append then overwrite All options requiring a value can also be called with '=' e.g. testssl.sh -t=smtp --wide --openssl=/usr/bin/openssl <URI>. <URI> is always the last parameter. Need HTML output? Just pipe through "aha" (ANSI HTML Adapter: github.com/theZiz/aha) like "testssl.sh <options> <URI> | aha >output.html" userid@somehost:~ % |
Similarly there is also:
– TLSSLed v1.2 – Evaluate The Security Of A Target SSL Or TLS (HTTPS) Web Server Implementation
You can get testssl.sh here:
Latest zip: testssl.sh-3.0rc2.zip
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curl -L https://testssl.sh |
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wget -O - https://testssl.sh |
Or read more here.