Mar 27, 2026 - For details about updated CVE-2025-53521 (BIG-IP APM vulnerability), refer to K000156741.

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IRONMAN's avatar
IRONMAN
Icon for Cirrostratus rankCirrostratus
Nov 13, 2020
Solved

F5 Sending syslogs with two hostname to remote syslog server

HI All,   we have F5 Device (LTM + AFM), we configured syslog sever splunk via linux syslog server as forwarder. in Linux server each F5 creating two syslog files, only with just host name and a...
AFM
application delivery
big-ip
Linux server
log
LTM
security
splunk
syslog
  • IRONMAN's avatar
    IRONMAN
    May 06, 2021

    HI ,

     

    We have solution for this.

     

    https://support.f5.com/csp/article/K76259573

     

    Recommended Actions

     

    Include "options {use_fqdn(yes); keep_hostname(no); };" to syslog configuration :

     

    Use following command in CLI:

     

     tmsh modify sys syslog include "options {use_fqdn(yes); keep_hostname(no); };"

     

     

    F5 has option to mark his host name in (only host name or FQDN name) in syslog message.

     

     

     

IRONMAN's avatar
IRONMAN
Icon for Cirrostratus rankCirrostratus
May 06, 2021

HI ,

 

We have solution for this.

 

https://support.f5.com/csp/article/K76259573

 

Recommended Actions

 

Include "options {use_fqdn(yes); keep_hostname(no); };" to syslog configuration :

 

Use following command in CLI:

 

 tmsh modify sys syslog include "options {use_fqdn(yes); keep_hostname(no); };"

 

 

F5 has option to mark his host name in (only host name or FQDN name) in syslog message.