Appendix B - Log Integrity and Secure Log Transfer
This section identifies the options for enabling log integrity and secure log transfer settings between FortiAnalyzer and FortiGate devices.
Log Integrity
FortiAnalyzer can create an MD5 checksum for each log file in order to secure logs from being modified after they have been sent to an analytics platform.
The log integrity setting selected determines the values recorded at the time of transmission or when rolling the log:
- MD5: Record the log file's MD5 hash value only.
- MD5-auth: Record the log file's MD5 hash value and authentication code.
- None: Do not record the log file checksum (default).
Configuring log integrity settings
To configure FortiAnalyzer log integrity:
- In the FortiAnalyzer CLI, enter the following commands:
configure system global
set log-checksum {md5 | md5-auth | none}
end
Verifying log-integrity
When log integrity settings are applied, you can view the MD5 checksum for logs in FortiAnalyzer event logs and the FortiAnalyzer CLI.
To view the log file's MD5 checksum in event logs:
- Go to FortiSoC > Event Monitor > All Events and select an event log.
- In the toolbar, select Display Raw to view the raw log details.
The MD5 checksum is included in the details of the raw log.id=6906469110439837696 itime=2020-12-18 06:47:59 euid=1 epid=1 dsteuid=1 dstepid=1 log_id=0031040026 subtype=logfile type=event level=information time=06:47:59 date=2020-12-18 user=system action=roll msg=Rolled log file tlog.1608270213.log of device FGVM01TM20000000 [FGVM01TM20000000] vdom root, MD5 checksum: ad85f8e889a3436d75b22b4a33c492ec userfrom=system desc=Rolling disk log file devid=FAZVMSTM20000000 devname=FAZVMSTM20000000 dtime=2020-12-18 06:47:59 itime_t=1608270479
To query the log file's MD5 checksum in the CLI:
- Enter the following command in the FortiAnalyzer CLI:
execute log-integrity <device_name> <vdom name> <log_name>
For example:
execute log-integrity FGVM01TM20000000 root tlog.1608279204.log.gz
Integrity checking passed:
MD5 checksum is [82598ec0086319db73bd0f9de2396047]
Secure Log Transfer
Optimized Fabric Transfer Protocol (OFTP) is a proprietary Fortinet protocol. It is used for connectivity, performing health checks, file transfers, and log display on FortiGate. OFTP listens on ports TCP514 and UDP514.
In the default configuration, there are two communication streams between FortiGate and FortiAnalyzer. OFTP communication is encrypted and log communication is not.
- OFTP communication occurs on TCP514 using TLS.
- Log communication occurs on UDP514 (default setting).
To secure log transfer, you can enable TCP and encryption. When enabled, logs are transferred securely between the FortiGate and FortiAnalyzer using TCP514 (TLS).
Configuring secure log transfer settings
To enable secure log transfer:
- In the FortiGate CLI, enter the following commands:
configure log fortianalyzer setting
set reliable enable
end
|
Enabling secure log transfer over TCP will impact overall logging performance. |
|
OFTP SSL protocol supports SSLv3, TLSv1.0, TLSv1.2, and TLSv1.3 (default TLSv1.2). |
Supported ciphers
The list of supported ciphers is determined when configuring enc_algorithm using the configure log fortianalyzer setting command in the FortiGate CLI.
Cipher security levels
FortiAnalyzer allows administrators to specify the security levels for cipher suites as low, medium, or high. Using a higher security level means using more secure ciphers. SSL static key ciphers can be disabled to support forward secrecy.
Defining the enc-algorithm and ssl-static-key-ciphers usage settings in FortiAnalyzer allows administrators to choose which OpenSSL cipher suites are supported.
- Low
enc-algorithmuses all OpenSSL ciphers. - Medium
enc-algorithmuses high and medium OpenSSL ciphers. - High
enc-algorithmuses only high OpenSSL ciphers.
- Disabling
ssl-static-key-ciphersenables forward secrecy.
To configure the cipher suite security level in the FortiAnalyzer CLI:
- Enter the following command in the FortiAnalyzer CLI:
config system global
set enc-algorithm {custom | high | medium | low}
set ssl-static-key-ciphers {enable | disable}
end
If enc-algorithm is set to custom, configure the ssl-cipher-suites table to enforce the user specified preferred cipher order in the incoming SSL connections. Enter the following command:
config system global
config ssl-cipher-suites
edit <priority>
set cipher <string>
set version {tls1.2-or-below | tls1.3}
end
If using enc-algorithm is set to high, medium, or low, see the list of supported ciphers based on security level settings below.
|
ssl-static-key-ciphers enabled |
|||
|
|
enc-algorithm | ||
|
|
Low |
TLS_AES_256_GCM_SHA384:TLS_CHACHA20_POLY1305_SHA256:TLS_AES_128_GCM_SHA256:ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-GCM-SHA384:DHE-DSS-AES256-GCM-SHA384:DHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-CHACHA20-POLY1305:ECDHE-RSA-CHACHA20-POLY1305:DHE-RSA-CHACHA20-POLY1305:ECDHE-ECDSA-AES256-CCM:DHE-RSA-AES256-CCM:ECDHE-ECDSA-ARIA256-GCM-SHA384:ECDHE-ARIA256-GCM-SHA384:DHE-DSS-ARIA256-GCM-SHA384:DHE-RSA-ARIA256-GCM-SHA384:ECDHE-ECDSA-AES256-SHA384:ECDHE-RSA-AES256-SHA384:DHE-RSA-AES256-SHA256:DHE-DSS-AES256-SHA256:ECDHE-ECDSA-CAMELLIA256-SHA384:ECDHE-RSA-CAMELLIA256-SHA384:DHE-RSA-CAMELLIA256-SHA256:DHE-DSS-CAMELLIA256-SHA256:ECDHE-ECDSA-AES256-SHA:ECDHE-RSA-AES256-SHA:DHE-RSA-AES256-SHA:DHE-DSS-AES256-SHA:DHE-RSA-CAMELLIA256-SHA:DHE-DSS-CAMELLIA256-SHA:RSA-PSK-AES256-GCM-SHA384:DHE-PSK-AES256-GCM-SHA384:RSA-PSK-CHACHA20-POLY1305:DHE-PSK-CHACHA20-POLY1305:ECDHE-PSK-CHACHA20-POLY1305:DHE-PSK-AES256-CCM:RSA-PSK-ARIA256-GCM-SHA384:DHE-PSK-ARIA256-GCM-SHA384:AES256-GCM-SHA384:AES256-CCM:ARIA256-GCM-SHA384:PSK-AES256-GCM-SHA384:PSK-CHACHA20-POLY1305:PSK-AES256-CCM:PSK-ARIA256-GCM-SHA384:AES256-SHA256:CAMELLIA256-SHA256:ECDHE-PSK-AES256-CBC-SHA384:ECDHE-PSK-AES256-CBC-SHA:SRP-DSS-AES-256-CBC-SHA:SRP-RSA-AES-256-CBC-SHA:SRP-AES-256-CBC-SHA:RSA-PSK-AES256-CBC-SHA384:DHE-PSK-AES256-CBC-SHA384:RSA-PSK-AES256-CBC-SHA:DHE-PSK-AES256-CBC-SHA:ECDHE-PSK-CAMELLIA256-SHA384:RSA-PSK-CAMELLIA256-SHA384:DHE-PSK-CAMELLIA256-SHA384:AES256-SHA:CAMELLIA256-SHA:PSK-AES256-CBC-SHA384:PSK-AES256-CBC-SHA:PSK-CAMELLIA256-SHA384:ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256:DHE-DSS-AES128-GCM-SHA256:DHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES128-CCM:DHE-RSA-AES128-CCM:ECDHE-ECDSA-ARIA128-GCM-SHA256:ECDHE-ARIA128-GCM-SHA256:DHE-DSS-ARIA128-GCM-SHA256:DHE-RSA-ARIA128-GCM-SHA256:ECDHE-ECDSA-AES128-SHA256:ECDHE-RSA-AES128-SHA256:DHE-RSA-AES128-SHA256:DHE-DSS-AES128-SHA256:ECDHE-ECDSA-CAMELLIA128-SHA256:ECDHE-RSA-CAMELLIA128-SHA256:DHE-RSA-CAMELLIA128-SHA256:DHE-DSS-CAMELLIA128-SHA256:ECDHE-ECDSA-AES128-SHA:ECDHE-RSA-AES128-SHA:DHE-RSA-AES128-SHA:DHE-DSS-AES128-SHA:DHE-RSA-CAMELLIA128-SHA:DHE-DSS-CAMELLIA128-SHA:RSA-PSK-AES128-GCM-SHA256:DHE-PSK-AES128-GCM-SHA256:DHE-PSK-AES128-CCM:RSA-PSK-ARIA128-GCM-SHA256:DHE-PSK-ARIA128-GCM-SHA256:AES128-GCM-SHA256:AES128-CCM:ARIA128-GCM-SHA256:PSK-AES128-GCM-SHA256:PSK-AES128-CCM:PSK-ARIA128-GCM-SHA256:AES128-SHA256:CAMELLIA128-SHA256:ECDHE-PSK-AES128-CBC-SHA256:ECDHE-PSK-AES128-CBC-SHA:SRP-DSS-AES-128-CBC-SHA:SRP-RSA-AES-128-CBC-SHA:SRP-AES-128-CBC-SHA:RSA-PSK-AES128-CBC-SHA256:DHE-PSK-AES128-CBC-SHA256:RSA-PSK-AES128-CBC-SHA:DHE-PSK-AES128-CBC-SHA:ECDHE-PSK-CAMELLIA128-SHA256:RSA-PSK-CAMELLIA128-SHA256:DHE-PSK-CAMELLIA128-SHA256:AES128-SHA:CAMELLIA128-SHA:PSK-AES128-CBC-SHA256:PSK-AES128-CBC-SHA:PSK-CAMELLIA128-SHA256:ECDHE-ECDSA-AES256-CCM8:ECDHE-ECDSA-AES128-CCM8:DHE-RSA-AES256-CCM8:DHE-RSA-AES128-CCM8:DHE-PSK-AES256-CCM8:DHE-PSK-AES128-CCM8:AES256-CCM8:AES128-CCM8:PSK-AES256-CCM8:PSK-AES128-CCM8 | |
|
|
Medium |
TLS_AES_256_GCM_SHA384:TLS_CHACHA20_POLY1305_SHA256:TLS_AES_128_GCM_SHA256:ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-GCM-SHA384:DHE-DSS-AES256-GCM-SHA384:DHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-CHACHA20-POLY1305:ECDHE-RSA-CHACHA20-POLY1305:DHE-RSA-CHACHA20-POLY1305:ECDHE-ECDSA-AES256-CCM:DHE-RSA-AES256-CCM:ECDHE-ECDSA-ARIA256-GCM-SHA384:ECDHE-ARIA256-GCM-SHA384:DHE-DSS-ARIA256-GCM-SHA384:DHE-RSA-ARIA256-GCM-SHA384:ECDHE-ECDSA-AES256-SHA384:ECDHE-RSA-AES256-SHA384:DHE-RSA-AES256-SHA256:DHE-DSS-AES256-SHA256:ECDHE-ECDSA-CAMELLIA256-SHA384:ECDHE-RSA-CAMELLIA256-SHA384:DHE-RSA-CAMELLIA256-SHA256:DHE-DSS-CAMELLIA256-SHA256:ECDHE-ECDSA-AES256-SHA:ECDHE-RSA-AES256-SHA:DHE-RSA-AES256-SHA:DHE-DSS-AES256-SHA:DHE-RSA-CAMELLIA256-SHA:DHE-DSS-CAMELLIA256-SHA:RSA-PSK-AES256-GCM-SHA384:DHE-PSK-AES256-GCM-SHA384:RSA-PSK-CHACHA20-POLY1305:DHE-PSK-CHACHA20-POLY1305:ECDHE-PSK-CHACHA20-POLY1305:DHE-PSK-AES256-CCM:RSA-PSK-ARIA256-GCM-SHA384:DHE-PSK-ARIA256-GCM-SHA384:AES256-GCM-SHA384:AES256-CCM:ARIA256-GCM-SHA384:PSK-AES256-GCM-SHA384:PSK-CHACHA20-POLY1305:PSK-AES256-CCM:PSK-ARIA256-GCM-SHA384:AES256-SHA256:CAMELLIA256-SHA256:ECDHE-PSK-AES256-CBC-SHA384:ECDHE-PSK-AES256-CBC-SHA:SRP-DSS-AES-256-CBC-SHA:SRP-RSA-AES-256-CBC-SHA:SRP-AES-256-CBC-SHA:RSA-PSK-AES256-CBC-SHA384:DHE-PSK-AES256-CBC-SHA384:RSA-PSK-AES256-CBC-SHA:DHE-PSK-AES256-CBC-SHA:ECDHE-PSK-CAMELLIA256-SHA384:RSA-PSK-CAMELLIA256-SHA384:DHE-PSK-CAMELLIA256-SHA384:AES256-SHA:CAMELLIA256-SHA:PSK-AES256-CBC-SHA384:PSK-AES256-CBC-SHA:PSK-CAMELLIA256-SHA384:ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256:DHE-DSS-AES128-GCM-SHA256:DHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES128-CCM:DHE-RSA-AES128-CCM:ECDHE-ECDSA-ARIA128-GCM-SHA256:ECDHE-ARIA128-GCM-SHA256:DHE-DSS-ARIA128-GCM-SHA256:DHE-RSA-ARIA128-GCM-SHA256:ECDHE-ECDSA-AES128-SHA256:ECDHE-RSA-AES128-SHA256:DHE-RSA-AES128-SHA256:DHE-DSS-AES128-SHA256:ECDHE-ECDSA-CAMELLIA128-SHA256:ECDHE-RSA-CAMELLIA128-SHA256:DHE-RSA-CAMELLIA128-SHA256:DHE-DSS-CAMELLIA128-SHA256:ECDHE-ECDSA-AES128-SHA:ECDHE-RSA-AES128-SHA:DHE-RSA-AES128-SHA:DHE-DSS-AES128-SHA:DHE-RSA-CAMELLIA128-SHA:DHE-DSS-CAMELLIA128-SHA:RSA-PSK-AES128-GCM-SHA256:DHE-PSK-AES128-GCM-SHA256:DHE-PSK-AES128-CCM:RSA-PSK-ARIA128-GCM-SHA256:DHE-PSK-ARIA128-GCM-SHA256:AES128-GCM-SHA256:AES128-CCM:ARIA128-GCM-SHA256:PSK-AES128-GCM-SHA256:PSK-AES128-CCM:PSK-ARIA128-GCM-SHA256:AES128-SHA256:CAMELLIA128-SHA256:ECDHE-PSK-AES128-CBC-SHA256:ECDHE-PSK-AES128-CBC-SHA:SRP-DSS-AES-128-CBC-SHA:SRP-RSA-AES-128-CBC-SHA:SRP-AES-128-CBC-SHA:RSA-PSK-AES128-CBC-SHA256:DHE-PSK-AES128-CBC-SHA256:RSA-PSK-AES128-CBC-SHA:DHE-PSK-AES128-CBC-SHA:ECDHE-PSK-CAMELLIA128-SHA256:RSA-PSK-CAMELLIA128-SHA256:DHE-PSK-CAMELLIA128-SHA256:AES128-SHA:CAMELLIA128-SHA:PSK-AES128-CBC-SHA256:PSK-AES128-CBC-SHA:PSK-CAMELLIA128-SHA256:ECDHE-ECDSA-AES256-CCM8:ECDHE-ECDSA-AES128-CCM8:DHE-RSA-AES256-CCM8:DHE-RSA-AES128-CCM8:DHE-PSK-AES256-CCM8:DHE-PSK-AES128-CCM8:AES256-CCM8:AES128-CCM8:PSK-AES256-CCM8:PSK-AES128-CCM8 | |
|
|
High |
TLS_AES_256_GCM_SHA384:TLS_CHACHA20_POLY1305_SHA256:TLS_AES_128_GCM_SHA256:ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-GCM-SHA384:DHE-DSS-AES256-GCM-SHA384:DHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-CHACHA20-POLY1305:ECDHE-RSA-CHACHA20-POLY1305:DHE-RSA-CHACHA20-POLY1305:ECDHE-ECDSA-AES256-CCM:DHE-RSA-AES256-CCM:ECDHE-ECDSA-ARIA256-GCM-SHA384:ECDHE-ARIA256-GCM-SHA384:DHE-DSS-ARIA256-GCM-SHA384:DHE-RSA-ARIA256-GCM-SHA384:ECDHE-ECDSA-AES256-SHA384:ECDHE-RSA-AES256-SHA384:DHE-RSA-AES256-SHA256:DHE-DSS-AES256-SHA256:ECDHE-ECDSA-CAMELLIA256-SHA384:ECDHE-RSA-CAMELLIA256-SHA384:DHE-RSA-CAMELLIA256-SHA256:DHE-DSS-CAMELLIA256-SHA256:ECDHE-ECDSA-AES256-SHA:ECDHE-RSA-AES256-SHA:DHE-RSA-AES256-SHA:DHE-DSS-AES256-SHA:DHE-RSA-CAMELLIA256-SHA:DHE-DSS-CAMELLIA256-SHA:RSA-PSK-AES256-GCM-SHA384:DHE-PSK-AES256-GCM-SHA384:RSA-PSK-CHACHA20-POLY1305:DHE-PSK-CHACHA20-POLY1305:ECDHE-PSK-CHACHA20-POLY1305:DHE-PSK-AES256-CCM:RSA-PSK-ARIA256-GCM-SHA384:DHE-PSK-ARIA256-GCM-SHA384:AES256-GCM-SHA384:AES256-CCM:ARIA256-GCM-SHA384:PSK-AES256-GCM-SHA384:PSK-CHACHA20-POLY1305:PSK-AES256-CCM:PSK-ARIA256-GCM-SHA384:AES256-SHA256:CAMELLIA256-SHA256:ECDHE-PSK-AES256-CBC-SHA384:ECDHE-PSK-AES256-CBC-SHA:SRP-DSS-AES-256-CBC-SHA:SRP-RSA-AES-256-CBC-SHA:SRP-AES-256-CBC-SHA:RSA-PSK-AES256-CBC-SHA384:DHE-PSK-AES256-CBC-SHA384:RSA-PSK-AES256-CBC-SHA:DHE-PSK-AES256-CBC-SHA:ECDHE-PSK-CAMELLIA256-SHA384:RSA-PSK-CAMELLIA256-SHA384:DHE-PSK-CAMELLIA256-SHA384:AES256-SHA:CAMELLIA256-SHA:PSK-AES256-CBC-SHA384:PSK-AES256-CBC-SHA:PSK-CAMELLIA256-SHA384:ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256:DHE-DSS-AES128-GCM-SHA256:DHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES128-CCM:DHE-RSA-AES128-CCM:ECDHE-ECDSA-ARIA128-GCM-SHA256:ECDHE-ARIA128-GCM-SHA256:DHE-DSS-ARIA128-GCM-SHA256:DHE-RSA-ARIA128-GCM-SHA256:ECDHE-ECDSA-AES128-SHA256:ECDHE-RSA-AES128-SHA256:DHE-RSA-AES128-SHA256:DHE-DSS-AES128-SHA256:ECDHE-ECDSA-CAMELLIA128-SHA256:ECDHE-RSA-CAMELLIA128-SHA256:DHE-RSA-CAMELLIA128-SHA256:DHE-DSS-CAMELLIA128-SHA256:ECDHE-ECDSA-AES128-SHA:ECDHE-RSA-AES128-SHA:DHE-RSA-AES128-SHA:DHE-DSS-AES128-SHA:DHE-RSA-CAMELLIA128-SHA:DHE-DSS-CAMELLIA128-SHA:RSA-PSK-AES128-GCM-SHA256:DHE-PSK-AES128-GCM-SHA256:DHE-PSK-AES128-CCM:RSA-PSK-ARIA128-GCM-SHA256:DHE-PSK-ARIA128-GCM-SHA256:AES128-GCM-SHA256:AES128-CCM:ARIA128-GCM-SHA256:PSK-AES128-GCM-SHA256:PSK-AES128-CCM:PSK-ARIA128-GCM-SHA256:AES128-SHA256:CAMELLIA128-SHA256:ECDHE-PSK-AES128-CBC-SHA256:ECDHE-PSK-AES128-CBC-SHA:SRP-DSS-AES-128-CBC-SHA:SRP-RSA-AES-128-CBC-SHA:SRP-AES-128-CBC-SHA:RSA-PSK-AES128-CBC-SHA256:DHE-PSK-AES128-CBC-SHA256:RSA-PSK-AES128-CBC-SHA:DHE-PSK-AES128-CBC-SHA:ECDHE-PSK-CAMELLIA128-SHA256:RSA-PSK-CAMELLIA128-SHA256:DHE-PSK-CAMELLIA128-SHA256:AES128-SHA:CAMELLIA128-SHA:PSK-AES128-CBC-SHA256:PSK-AES128-CBC-SHA:PSK-CAMELLIA128-SHA256 | |
|
|
|
fips enabled |
TLS_AES_256_GCM_SHA384:TLS_CHACHA20_POLY1305_SHA256:TLS_AES_128_GCM_SHA256:AES256-SHA:AES256-SHA256:DHE-RSA-AES256-SHA:DHE-RSA-AES256-SHA256:ECDHE-RSA-AES256-SHA:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-AES256-SHA:ECDHE-ECDSA-AES256-GCM-SHA384:AES128-SHA:AES128-SHA256:DHE-RSA-AES128-SHA:DHE-RSA-AES128-SHA256:ECDHE-RSA-AES128-SHA:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES128-SHA:ECDHE-ECDSA-AES128-GCM-SHA256 |
The following ciphers are not available when using forward secrecy (ssl-static-key-ciphers is disabled).
| ssl-static-key-ciphers disabled | |||
|
|
enc-algorithm |
|
|
|
|
|
Low |
AES256-GCM-SHA384:AES256-CCM:ARIA256-GCM-SHA384:AES256-SHA256:CAMELLIA256-SHA256:AES256-SHA:CAMELLIA256-SHA:AES128-GCM-SHA256:AES128-CCM:AES128-SHA256:CAMELLIA128-SHA256:AES128-SHA:CAMELLIA128-SHA:AES256-CCM8:AES128-CCM8 |
|
|
|
Medium |
AES256-GCM-SHA384:AES256-CCM:ARIA256-GCM-SHA384:AES256-SHA256:CAMELLIA256-SHA256:AES256-SHA:CAMELLIA256-SHA:AES128-GCM-SHA256:AES128-CCM:AES128-SHA256:CAMELLIA128-SHA256:AES128-SHA:CAMELLIA128-SHA:AES256-CCM8:AES128-CCM8 |
|
|
|
High |
AES256-GCM-SHA384:AES256-CCM:ARIA256-GCM-SHA384:AES256-SHA256:CAMELLIA256-SHA256:AES256-SHA:CAMELLIA256-SHA:AES128-GCM-SHA256:AES128-CCM:AES128-SHA256:CAMELLIA128-SHA256:AES128-SHA:CAMELLIA128-SHA |
|
|
|
fips enabled |
AES256-SHA:AES256-SHA256:AES128-SHA:AES128-SHA256 |