Reporting

Why does PDF server fail and give error message 396 Restricting Firefox?

rsimmons
Splunk Employee
Splunk Employee

2010-04-23 16:30:22,153 WARNING pdfhandler:396 - Restricting Firefox to following hosts only: *:53 10.128.11.67 2010-04-23 16:30:22,153 WARNING Restricting Firefox to following hosts only: *:53 10.128.11.67 2010-04-23 16:30:22,153 INFO pdfhandler:401 - Executing ['/opt/splunk/etc/apps/pdfserver/bin/firefox-x86_64/firefox', '-print',

Tags (1)
1 Solution

Johnvey
Contributor

This is the default security setting used by the PDF server and does not represent an error. The IP address 10.128.11.67 is the addressable IP address of splunkweb (that requests PDF services).

Users may choose to disable this security check in pdf_server.conf via:

# Uncomment to allow the server to render web pages other than those served up by 
# an instance of Splunk
# restrict_to_splunkweb = False

Users may also expand the list of allowed IPs by changing the following key in pdf_server.conf:

# IP addresses of Splunk appservers (or other servers) that the pdf server is
# permitted to query - Deaults to any IP
# Both IPv4 and IPv6 network declarations are supported
# appserver_ipaddr = 192.168.4.0/24,192.168.3.0/24

As a security best practice, these settings should generally not be changed.

View solution in original post

Johnvey
Contributor

This is the default security setting used by the PDF server and does not represent an error. The IP address 10.128.11.67 is the addressable IP address of splunkweb (that requests PDF services).

Users may choose to disable this security check in pdf_server.conf via:

# Uncomment to allow the server to render web pages other than those served up by 
# an instance of Splunk
# restrict_to_splunkweb = False

Users may also expand the list of allowed IPs by changing the following key in pdf_server.conf:

# IP addresses of Splunk appservers (or other servers) that the pdf server is
# permitted to query - Deaults to any IP
# Both IPv4 and IPv6 network declarations are supported
# appserver_ipaddr = 192.168.4.0/24,192.168.3.0/24

As a security best practice, these settings should generally not be changed.

Got questions? Get answers!

Join the Splunk Community Slack to learn, troubleshoot, and make connections with fellow Splunk practitioners in real time!

Meet up IRL or virtually!

Join Splunk User Groups to connect and learn in-person by region or remotely by topic or industry.

Get Updates on the Splunk Community!

Laser Bananas and Edge Hubs: Exploring Operational Technology (OT) Data Through a ...

  OT is a different environment to traditional IT and can have interesting challenges when interfacing the ...

Event Series: Mastering AI Tokenomics and Splunk Agent Observability

Beyond the Black Box: Correlating AI Performance and Tokenomics with Splunk Agent Observability   As ...

span_metrics: The OpenTelemetry-Idiomatic Way to See Inside Your Services

You open a trace in Splunk Observability Cloud and everything looks fine. One root span, order-pipeline, with ...