I want to set "force to use TLS 1.2" in my server httpd-ssl.conf
SSLProtocol -all +TLSv1.2
but I'm also considering if some client modules does not support TLS 1.2,
and I would like to give it a exception that TLS 1.x can be acceptable.
Am I able to do such thing?
e.g. disable TLS_1.2 restriction in specific URL path ( https:///specific/path/ ) or specific service or something like this.
thanks!
The path component is only known after a successful TLS handshake. Additionaly multiple HTTP request (with different path) can be done within the same TCP connection. While in theory the server could first allow the TLS handshake with an older protocol version and then drop the connection if the client uses the established TLS session to access a path which requires a better TLS version I don't think that this can be configured in Apache.
This might help for APACHE: https://httpd.apache.org/docs/trunk/ssl/ssl_howto.html
How can I create an SSL server which accepts many types of ciphers in general, but requires a strong cipher for access to a particular URL?
Obviously, a server-wide SSLCipherSuite which restricts ciphers to the strong variants, isn't the answer here. However, mod_ssl can be reconfigured within Location blocks, to give a per-directory solution, and can automatically force a renegotiation of the SSL parameters to meet the new configuration. This can be done as follows:
# be liberal in general -- use Mozilla's "Intermediate" ciphersuites (weaker
# ciphersuites may also be used, but will not be documented here)
SSLCipherSuite ECDHE-ECDSA-CHACHA20-POLY1305:ECDHE-RSA-CHACHA20-POLY1305:ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-GCM-SHA384:DHE-RSA-AES128-GCM-SHA256:DHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-AES128-SHA256:ECDHE-RSA-AES128-SHA256:ECDHE-ECDSA-AES128-SHA:ECDHE-RSA-AES256-SHA384:ECDHE-RSA-AES128-SHA:ECDHE-ECDSA-AES256-SHA384:ECDHE-ECDSA-AES256-SHA:ECDHE-RSA-AES256-SHA:DHE-RSA-AES128-SHA256:DHE-RSA-AES128-SHA:DHE-RSA-AES256-SHA256:DHE-RSA-AES256-SHA:ECDHE-ECDSA-DES-CBC3-SHA:ECDHE-RSA-DES-CBC3-SHA:EDH-RSA-DES-CBC3-SHA:AES128-GCM-SHA256:AES256-GCM-SHA384:AES128-SHA256:AES256-SHA256:AES128-SHA:AES256-SHA:DES-CBC3-SHA:!DSS
<Location "/strong/area">
# but https://hostname/strong/area/ and below requires strong ciphersuites
SSLCipherSuite ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-CHACHA20-POLY1305:ECDHE-RSA-CHACHA20-POLY1305:ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES256-SHA384:ECDHE-RSA-AES256-SHA384:ECDHE-ECDSA-AES128-SHA256:ECDHE-RSA-AES128-SHA256
</Location>
Related
I was wondering if it was possible to configure either of these servers to both require a client certificate while at the same time not completely verifying it?
So far, I tried looking at the SSLVerifyClient configuration fields but the options seem to either make it optional or required and actually verified.
I have enabled mod_http2 for the Apache Web Server, and made the necessary changes in the conf, still any request made from a browser to the server follows http/1.1 Protocol
The server sends a Upgrade:h2 header field but the browser still continues to make http/1.1 requests.
How can i make a h2 request from Mozilla/Chrome?
I'm using Mozilla Firefox 48.0
Check that HTTP/2 support is enabled in Firefox:
In the address bar of Firefox, type "about:config", then search for "network.http.spdy.enabled.http2" and make sure that it is set to true.
Firefox implements HTTP/2 only on TLS
So, you will have to access the website using https://xxxxx
Browsers currently only support HTTP/2 via https. See http://caniuse.com/#feat=http2 the note number 2.
The HTTP/2 standard imposes some extra requirements on https, no cipher from a specified black list may be used.
An acceptable Apache SSL configuration regarding this is:
SSLCipherSuite ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-AES256-GCM-SHA384:DHE-RSA-AES128-GCM-SHA256:DHE-DSS-AES128-GCM-SHA256:kEDH+AESGCM:ECDHE-RSA-AES128-SHA256:ECDHE-ECDSA-AES128-SHA256:ECDHE-RSA-AES128-SHA:ECDHE-ECDSA-AES128-SHA:ECDHE-RSA-AES256-SHA384:ECDHE-ECDSA-AES256-SHA384:ECDHE-RSA-AES256-SHA:ECDHE-ECDSA-AES256-SHA:DHE-RSA-AES128-SHA256:DHE-RSA-AES128-SHA:DHE-DSS-AES128-SHA256:DHE-RSA-AES256-SHA256:DHE-DSS-AES256-SHA:DHE-RSA-AES256-SHA:!aNULL:!eNULL:!EXPORT:!DES:!RC4:!3DES:!MD5:!PSK
SSLProtocol All -SSLv2 -SSLv3
This needs to be changed in the httpd config file and NS_ERROR_NET_INADEQUATE_SECURITY should not occur after httpd restart.
I'm sure this is an FAQ but I couldn't find anything I recognized as being the same question.
I have several web-apps running in Tomcat, with some pages e.g. the login page protected by SSL as defined by confidentiality elements in their web.xmls. One of the apps also accepts client-authentication via certificate. I also have a rather extensive JAAS-based authorization & authentication scheme, and there is all kinds of shared code and different JAAS configurations etc between the various webapps.
I really don't want to disturb any of that while accomplishing the below.
I am now in the process of inserting Apache HTTPD with mod-proxy and mod-proxy-balancer in front of Tomcat as a load balancer, prior to adding more Tomcat instances.
What I want to accomplish for HTTPS requests is that they are redirected 'blind' to Tomcat without HTTPD being the SSL endpoint, i.e. HTTPD just passes ciphertext directly to Tomcat so that TC can keep doing what it is already doing with logins, SSL, web.xml confidentialty guarantees, and most importantly client authentication.
Is this possible with the configuration I've described?
I am very familiar with the webapps and SSL and HTTPS and Tomcat, but my knowledge of the outer reaches of Apache HTTPD is limited.
Happy to have this moved if necessary but it is kind of programming with config files ;)
This sounds similar to this question, where I've answered that it's not possible:
You can't just relay the SSL/TLS traffic to Tomcat from Apache. Either
your SSL connection ends at Apache, and then you should reverse proxy
the traffic to Tomcat (SSL [between Httpd and Tomcat] is rarely useful in this case), or you make
the clients connect to Tomcat directly and let it handle the SSL
connection.
I admit it's a bit short of links to back this claim. I guess I might be wrong (I've just never seen this done, but that doesn't strictly mean it doesn't exist...).
As you know, you need a direct connection, or a connection entirely relayed, between the user-agent and the SSL endpoint (in this case, you want it to be Tomcat). This means that Apache Httpd won't be able to look into the URL: it will know the host name at best (when using Server Name Indication).
The only option that doesn't seem to depend on a URL in the mod_proxy documentation is AllowCONNECT, which is what's used for forward proxy servers for HTTPS.
Even the options in mod_proxy_balancer expect a path at some point of the configuration. Its documentation doesn't mention SSL/HTTPS ("It provides load balancing support for HTTP, FTP and AJP13 protocols"), whereas mod_proxy talks at least about SSL when mentioning CONNECT.
I would suggest a couple of options:
Using an iptables-based load-balancer, without going through Httpd, ending the connections in Tomcat directly.
Ending the SSL/TLS connection at Httpd and using a plain HTTP reverse proxy to Tomcat.
This second option requires a bit more configuration to deal with the client certificates and Tomcat's security constraints.
If you have configured your webapp with <transport-guarantee>CONFIDENTIAL</transport-guarantee>, you will need to make Tomcat flag the connections as secure, despite the fact it sees them coming from its plain HTTP port. For Tomcat 5, here is an article (originally in French, but the automatic translations isn't too bad) describing how to implement a valve to set isSecure(). (If you're not familiar with valves, they are similar to filters, but operate within Tomcat itself, before the request is propagated to the webapp. They can be configured within Catalina) I think from Tomcat 5.5, the HTTP connector secure option does exactly that, without requiring your own valve. The AJP connector also has a similar option (if using mod_proxy_ajp or mod_jk).
If using the AJP connector, mod_proxy_ajp will forward the first certificate in the chain and make it available within Tomcat (via the normal request attribute). You'll probably need SSLOptions +ExportCertData +StdEnvVars. mod_jk (although deprecated as far as I know) can also forward the entire chain sent by the client (using JkOptions +ForwardSSLCertChain). This can be necessary when using proxy certificates (which are meaningless without the chain up to their end-entity certificate).
If you want to use mod_proxy_http, a trick is to pass the certificate via an HTTP header (mod_header), using something like RequestHeader set X-ClientCert %{SSL_CLIENT_CERT}s. I can't remember the exact details, but it's important to make sure that this header is cleared so that it never comes from the client's browser (who could forge it otherwise). If you need the full chain, you can try out this Httpd patch attempt. This approach would probably need an extra valve/filter to turn the header into the javax.servlet.request.X509Certificate (by parsing the PEM blocks).
A couple of other points that may be of interest:
If I remember well, you need to download the CRL files explicitly for Httpd and configure it to use them. Depending on the version of Httpd you're using, you may have to restart it to reload the CRLs.
If you're using re-negotiation to get your client-certificate, a CLIENT-CERT directive will not make Httpd request a client certificate as far as I know (this is otherwise done via a valve that can access the SSLSession when using the JSSE connector directly). You may have to configure the matching path in Httpd to request the client-certificate.
I am running a multi-language web store accessible from differents domains, that lead to different languages.
The apache configuration is quite complex and I would like to have one single file shared with all the stores. I had this in place until I had to introduce SSL.
When it comes to apache and SSL certificates I would need to do something like:
SetEnv is_es 0<br>
SetEnvIfNoCase Host .*es is_es 1<br>
SSLCertificateFile /etc/ssl/certs/spanish.server.crt env=is_es<br>
This is aparently not possible, apache tells me:
<i>SSLCertificateFile takes one argument, SSL Server Certificate file (`/path/to/file' - PEM or DER encoded)</i>
I was wondering if there is any workaround. My goal is to avoid having different copies of the same configuration and having to propagate manually any changes I want to make.
It is hosted on a dedicated server, so I am free to do any changes to the setup.
When you are on a https connection, the Host header is inside the SSL encapsulation, so you need the full SSL handshake before you check for an hostname for your virtualhost.
You should go for SSL certificates with SAN (Subject Alternative Names), this will allow that a single certificate for multiple hostnames. (or a wildcard cert)
All the main browsers supports it already:
http://www.digicert.com/subject-alternative-name-compatibility.htm
And you can get one of this certs from the majors CAs:
http://www.digicert.com/subject-alternative-name.htm
http://www.verisign.com/ssl/buy-ssl-certificates/subject-alternative-name-certificates/index.html
http://www.thawte.com/ssl/san-uc-ssl-certificates/index.html
according to this question all HTTP header when we are using HTTPS are encrypted(including request URI and Host header).
when browser want to browse a page on website that using HTTPS, it first create secure connection, then it sends HTTP request(encrypted) and server return the answer to browser. Now assume there are more than one secure website with more than one SSL certificate, so when server want to create secure connection how does it detect which certificate should be used because it doesn't know anything about request!!!
Since the SSL channel is negotiated prior to the reception of the Host header, an HTTPS server can use at most one certificate per bound IP endpoint (IP address and port). In other words, to use two different SSL certificates, you will either need to bind each virtual host to a different port, or a different IP address.
Before TLS the server indeed didn't have a way to know certificate of which host it should present to the client and this caused problems.
In TLS there was a special extension named Server Name introduced (see RFC 3546), which lets the client tell the server, what host the client wants to connect to. Based on contents of this extension the server can present proper certificate. Of course, all of this requires that TLS and the extension itself are supported and used by both parties.
The basis of this is to provide a SSL key(set) for each virtual server.
In Apache, for example, it's relatively simple. Each shared site is likely in a <VirtualHost> directive. The SSL keys can be specified within that, and thus apply to that virtual host only.
Rough example:
<VirtualHost *:443>
ServerName server.com
SSLEngine on
SSLCertificateKeyFile /etc/ssl/server_com.key
SSLCertificateFile /etc/ssl/server_com.crt
SSLCertificateChainFile /etc/ssl/server_com.ca-bundle
The server will then use the specified keys for all requests directed to that site over HTTPS. Further details on the Apache site. Similar things should apply to most web servers that support a concept of virtual hosts.
You won't get any errors, as the certificate and domain name match up.