Mercurial > hg > nginx
view src/http/modules/ngx_http_ssl_module.h @ 7732:59e1c73fe02b
SSL: ssl_reject_handshake directive (ticket #195).
In some cases it might be needed to reject SSL handshake based on SNI
server name provided, for example, to make sure an invalid certificate
is not returned to clients trying to contact a name-based virtual server
without SSL configured. Previously, a "ssl_ciphers aNULL;" was used for
this. This workaround, however, is not compatible with TLSv1.3, in
particular, when using BoringSSL, where it is not possible to configure
TLSv1.3 ciphers at all.
With this change, the ssl_reject_handshake directive is introduced,
which instructs nginx to reject SSL handshakes with an "unrecognized_name"
alert in a particular server block.
For example, to reject handshake with names other than example.com,
one can use the following configuration:
server {
listen 443 ssl;
ssl_reject_handshake on;
}
server {
listen 443 ssl;
server_name example.com;
ssl_certificate example.com.crt;
ssl_certificate_key example.com.key;
}
The following configuration can be used to reject all SSL handshakes
without SNI server name provided:
server {
listen 443 ssl;
ssl_reject_handshake on;
}
server {
listen 443 ssl;
server_name ~^;
ssl_certificate example.crt;
ssl_certificate_key example.key;
}
Additionally, the ssl_reject_handshake directive makes configuring
certificates for the default server block optional. If no certificates
are configured in the default server for a given listening socket,
certificates must be defined in all non-default server blocks with
the listening socket in question.
author | Maxim Dounin <mdounin@mdounin.ru> |
---|---|
date | Thu, 22 Oct 2020 18:02:28 +0300 |
parents | 3bff3f397c05 |
children | 71b7453fb11f |
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/* * Copyright (C) Igor Sysoev * Copyright (C) Nginx, Inc. */ #ifndef _NGX_HTTP_SSL_H_INCLUDED_ #define _NGX_HTTP_SSL_H_INCLUDED_ #include <ngx_config.h> #include <ngx_core.h> #include <ngx_http.h> typedef struct { ngx_flag_t enable; ngx_ssl_t ssl; ngx_flag_t prefer_server_ciphers; ngx_flag_t early_data; ngx_flag_t reject_handshake; ngx_uint_t protocols; ngx_uint_t verify; ngx_uint_t verify_depth; size_t buffer_size; ssize_t builtin_session_cache; time_t session_timeout; ngx_array_t *certificates; ngx_array_t *certificate_keys; ngx_array_t *certificate_values; ngx_array_t *certificate_key_values; ngx_str_t dhparam; ngx_str_t ecdh_curve; ngx_str_t client_certificate; ngx_str_t trusted_certificate; ngx_str_t crl; ngx_str_t ciphers; ngx_array_t *passwords; ngx_array_t *conf_commands; ngx_shm_zone_t *shm_zone; ngx_flag_t session_tickets; ngx_array_t *session_ticket_keys; ngx_uint_t ocsp; ngx_str_t ocsp_responder; ngx_shm_zone_t *ocsp_cache_zone; ngx_flag_t stapling; ngx_flag_t stapling_verify; ngx_str_t stapling_file; ngx_str_t stapling_responder; u_char *file; ngx_uint_t line; } ngx_http_ssl_srv_conf_t; extern ngx_module_t ngx_http_ssl_module; #endif /* _NGX_HTTP_SSL_H_INCLUDED_ */