YOKOGAWA DTSXL, User Manual, Page: 230 / 289

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B-147
IM 39J06B40-01EN 14th Edition: May 30, 2022
- /var/log/secure (SSH access log)
- /var/log/lighttpd/error.log (lighttpd error log)
- /var/log/lighttpd/access.log (lighttpd access log)
In addition, to limit the size of log records, DTSX3000 imposes the following connection
limits for SSH and HTTP.
- For SSH, packets are dropped with no access log records created if 17 or
more new connections are made within 4 seconds.
- For HTTP, packets are dropped with no access log records created if 5 or more
new connections are made within 4 seconds.
The rotation specifications of individual log files are shown below. The rotation cycle is
the period for performing rotation even if the size limit is not reached.
- /var/log/secure
Checking cycle for rotation: hourly
Number of historical log files: 20
Size threshold for rotation: 6 MB
Rotation cycle: weekly
- /var/log/lighttpd/error.log
- /var/log/lighrrpd/access.log
Checking cycle for rotation: hourly
Number of historical log files: 1
Size threshold for rotation: 6 MB
Rotation cycle: weekly
In the event of rotation failure due to file system full, only 10 lines of the most recent log
records are extracted and the remaining records are discarded for the following log files:
- /var/log/secure
- /var/log/lighttpd/error.log
- /var/log/lighttpd/access.log
Tip
The DTSX3000 also supports the following log files:
- /var/log/iptables.log (packet drop log of iptables)
- /var/log/typescript.root (Shell operation log for the root user account)
These log files have the following rotation specifications:
Checking cycle for rotation:
hourly
Number of historical log files: 1
Size threshold for rotation: 1 MB
Rotation cycle: weekly
As the DTSX3000 may be subject to malicious attacks, we recommend checking these log files too.

Procedure for Getting Log File
An example for getting log files using SFTP client software (WinSCP Ver4.3.3) is
described below.