ssl - syslog-ng 无法通过 tls 发送日志 - 握手错误

Question

无法使用 TLS 将日志发送到 syslog-ng docker 容器 (6514)日志正在成功传输，未在端口 601 上使用 TLS。

305ef6ab4973 syslog-ng[1]: Syslog connection accepted; fd='14', client='AF_INET(172.17.0.3:35362)', local='AF_INET(0.0.0.0:6514)'
305ef6ab4973 syslog-ng[1]: SSL error while reading stream; tls_error='SSL routines:tls_process_client_certificate:peer did not return a certificate', location='/etc/syslog-ng/syslog-ng.conf:35:9'
305ef6ab4973 syslog-ng[1]: I/O error occurred while reading; fd='14', error='Connection reset by peer (104)'
305ef6ab4973 syslog-ng[1]: Syslog connection closed; fd='14', client='AF_INET(172.17.0.3:35362)', local='AF_INET(0.0.0.0:6514)'

环境设置:Debian 9 VM、docker、最新的 syslog-ng。

系统日志版本

root@305ef6ab4973:/etc/syslog-ng# syslog-ng --version
syslog-ng 3 (3.21.1)
Config version: 3.21
Installer-Version: 3.21.1
Revision: 3.21.1-1
Compile-Date: May  3 2019 09:11:19
Module-Directory: /usr/lib/syslog-ng/3.21
Module-Path: /usr/lib/syslog-ng/3.21
Include-Path: /usr/share/syslog-ng/include
Available-Modules: cryptofuncs,kvformat,tfgetent,add-contextual-data,afsql,afuser,xml,riemann,json-plugin,geoip-plugin,redis,pacctformat,afamqp,pseudofile,hook-commands,examples,stardate,geoip2-plugin,tags-parser,system-source,graphite,date,kafka,snmptrapd-parser,confgen,afprog,basicfuncs,afsmtp,http,linux-kmsg-format,map-value-pairs,appmodel,disk-buffer,affile,afsocket,afstomp,afmongodb,csvparser,mod-java,syslogformat,cef,mod-python,sdjournal,dbparser
Enable-Debug: off
Enable-GProf: off
Enable-Memtrace: off
Enable-IPv6: on
Enable-Spoof-Source: on
Enable-TCP-Wrapper: on
Enable-Linux-Caps: on
Enable-Systemd: on

在端口 601 非 tls 上使用 loggen 生成系统日志消息

root@e41017b55dfa:loggen --stream 172.17.0.2 601
count=1816, rate = 915.72 msg/sec
count=2274, rate = 914.78 msg/sec
count=2732, rate = 914.93 msg/sec

日志写在601 conn的日志文件中

sudo tail -n 10 syslog-ng/logs/syslog-ng/tcp_601.log 
Jul 21 10:35:11 ip-172-17-0-3 prg00000[1234]: seq: 0000004294, thread: 0000, runid: 1563705308, stamp: 2019-07-21T10:35:11 PADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADD
Jul 21 10:35:11 ip-172-17-0-3 prg00000[1234]: seq: 0000004295, thread: 0000, runid: 1563705308, stamp: 2019-07-21T10:35:11 PADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADD
Jul 21 10:35:11 ip-172-17-0-3 prg00000[1234]: seq: 0000004296, thread: 0000, runid: 1563705308, stamp: 2019-07-21T10:35:11 PADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADD

syslog 消息日志(601 conn)

Jul 21 10:39:14 305ef6ab4973 syslog-ng[1]: Syslog connection accepted; fd='18', client='AF_INET(****)', local='AF_INET(0.0.0.0:601)'
Jul 21 10:39:44 305ef6ab4973 syslog-ng[1]: Syslog connection closed; fd='18', client='AF_INET(****)', local='AF_INET(0.0.0.0:601)'

当我使用 TLS 时，我收到以下错误

客户端:

root@e41017b55dfa:#loggen --use-ssl 172.17.0.2 6514
error [loggen_helper.c:open_ssl_connection:247] SSL connect failed
139771316958976:error:14094410:SSL routines:ssl3_read_bytes:sslv3 alert handshake failure:../ssl/record/rec_layer_s3.c:1407:SSL alert number 40
error [ssl_plugin.c:active_thread_func:313] can not connect to 172.17.0.2:6514 (0x5566c837e800)
Total runtime = 0.500195, count = 0

服务器端:

305ef6ab4973 syslog-ng[1]: Syslog connection accepted; fd='14', client='AF_INET(172.17.0.3:35362)', local='AF_INET(0.0.0.0:6514)'
305ef6ab4973 syslog-ng[1]: SSL error while reading stream; tls_error='SSL routines:tls_process_client_certificate:peer did not return a certificate', location='/etc/syslog-ng/syslog-ng.conf:35:9'
305ef6ab4973 syslog-ng[1]: I/O error occurred while reading; fd='14', error='Connection reset by peer (104)'
305ef6ab4973 syslog-ng[1]: Syslog connection closed; fd='14', client='AF_INET(172.17.0.3:35362)', local='AF_INET(0.0.0.0:6514)'

使用openssl连接测试

root@e41017b55dfa:/etc/syslog-ng# openssl s_client -connect 172.17.0.2:6514
CONNECTED(00000003)
depth=1 C = IL, ST = ***, L = ***, O = ***, OU = IT, CN = *** Syslog CA, emailAddress = ***@***.com
verify return:1
depth=0 C = IL, ST = ***, L = ***, O = ***, OU = IT, CN = 172.17.0.2
verify return:1
140233519988800:error:14094410:SSL routines:ssl3_read_bytes:sslv3 alert handshake failure:../ssl/record/rec_layer_s3.c:1407:SSL alert number 40
---
Certificate chain
 0 s:/C=IL/ST=***/L=***/O=***/OU=IT/CN=172.17.0.2
   i:/C=IL/ST=***/L=***/O=***/OU=IT/CN=*** Syslog CA/emailAddress=***@***.com
 1 s:/C=IL/ST=***/L=***/O=***/OU=IT/CN=*** Syslog CA/emailAddress=***@***.com
   i:/C=IL/ST=***/L=***/O=***/OU=IT/CN=*** Syslog CA/emailAddress=***@***.com
---
Server certificate
-----BEGIN CERTIFICATE-----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*****
-----END CERTIFICATE-----
subject=/C=IL/ST=***/L=***/O=***/OU=IT/CN=172.17.0.2
issuer=/C=IL/ST=***/L=***/O=***/OU=IT/CN=*** Syslog CA/emailAddress=***@***.com
---
No client certificate CA names sent
Client Certificate Types: RSA sign, DSA sign, ECDSA sign
Requested Signature Algorithms: RSA+SHA512:DSA+SHA512:ECDSA+SHA512:RSA+SHA384:DSA+SHA384:ECDSA+SHA384:RSA+SHA256:DSA+SHA256:ECDSA+SHA256:RSA+SHA224:DSA+SHA224:ECDSA+SHA224:RSA+SHA1:DSA+SHA1:ECDSA+SHA1
Shared Requested Signature Algorithms: RSA+SHA512:DSA+SHA512:ECDSA+SHA512:RSA+SHA384:DSA+SHA384:ECDSA+SHA384:RSA+SHA256:DSA+SHA256:ECDSA+SHA256:RSA+SHA224:DSA+SHA224:ECDSA+SHA224:RSA+SHA1:DSA+SHA1:ECDSA+SHA1
Peer signing digest: SHA512
Server Temp Key: X25519, 253 bits
---
SSL handshake has read 2487 bytes and written 281 bytes
Verification: OK
---
New, TLSv1.2, Cipher is ECDHE-RSA-AES256-GCM-SHA384
Server public key is 2048 bit
Secure Renegotiation IS supported
Compression: NONE
Expansion: NONE
No ALPN negotiated
SSL-Session:
    Protocol  : TLSv1.2
    Cipher    : ECDHE-RSA-AES256-GCM-SHA384
    Session-ID: 
    Session-ID-ctx: 
    Master-Key: 02FB22BADE731CF64439D69D1F1991F3FF3BD7C4E44AF531308DD021659B1220B8BEBE94C9934659734AB10D4AF25999
    PSK identity: None
    PSK identity hint: None
    SRP username: None
    Start Time: 1563704954
    Timeout   : 7200 (sec)
    Verify return code: 0 (ok)
    Extended master secret: yes
---
root@e41017b55dfa:/etc/syslog-ng# 

syslog-ng 客户端配置

@version: 3.18
@include "scl.conf"

source s_local {
    internal();
};

source s_network {
    default-network-drivers( ); };

destination test2_d {
    network("172.17.0.2" port(6514)
    transport("tls")
    tls( ca-dir("/etc/syslog-ng/ca.d")
         key-file("/etc/syslog-ng/cert.d/clientkey.pem")
         cert-file("/etc/syslog-ng/cert.d/clientcert.pem") )
    ); };

log { source(s_local); destination(test2_d); };

destination d_local {
    file("/var/log/messages");
    file("/var/log/messages-kv.log" template("$ISODATE $HOST $(format-welf --scope all-nv-pairs)\n") frac-digits(3));
};

log {
    source(s_local);
    source(s_network);
    destination(d_local);
};

syslog-ng 服务器配置

@version: 3.18
@include "scl.conf"

source s_local {
    internal();
};

source test1_s {
    network(
    transport("tcp")
    port(601)
    flags(syslog-protocol)
);
};

destination test1_d { file("/var/log/syslog-ng/tcp_601.log" dir_group(root) group(root) create_dirs(yes) dir_perm(0777) perm(0666) owner(root) dir_owner(root)); };
log { source("test1_s"); destination("test1_d"); }; 

source test2_s {
    network(
        ip(0.0.0.0) port(6514)
        transport("tls")
        tls( key-file("/etc/syslog-ng/cert.d/serverkey.pem")
             cert-file("/etc/syslog-ng/cert.d/servercert.pem")
             ca-dir("/etc/syslog-ng/ca.d"))
    ); };

destination test2_d { file("/var/log/syslog-ng/tls_6514.log" dir_group(root) group(root) create_dirs(yes) dir_perm(0777) perm(0666) owner(root) dir_owner(root)); };
log { source("test2_s"); destination("test2_d"); };

destination d_local {
    file("/var/log/messages");
    file("/var/log/messages-kv.log" template("$ISODATE $HOST $(format-welf --scope all-nv-pairs)\n") frac-digits(3));
};

log {
    source(s_local);
    destination(d_local);
};

Answer 1

您已经使用 loggen --use-ssl 和 openssl s_client 测试了您的配置，但未指定客户端证书(loggen 不支持客户端证书，openssl s_client 可以)。

服务器端的错误消息是关于缺少客户端证书:peer did not return a certificate。

如果您不想使用相互身份验证，您可以通过在服务器配置中添加 peer-verify(optional-trusted) TLS 选项使其成为可选项:

source test2_s {
    network(
        port(6514)
        transport("tls")
        tls( key-file("/etc/syslog-ng/cert.d/serverkey.pem")
             cert-file("/etc/syslog-ng/cert.d/servercert.pem")
             ca-dir("/etc/syslog-ng/ca.d")
             peer-verify(optional-trusted)
        )
    );
};

syslog-ng Admin Guide - TLS options