Hi all,
I’ve set the server_header variable in my primary config, and I’ve got a catch in the default reply route to modify headers where required. I’m masking this value for security reasons, and filling it with my own value for vanity reasons :).
I’ve noticed that the OPTIONS packet that is send via the dispatcher module when probing mode is on contains a User-Agent field which has the full version and OS type. Unfortunately I don’t necessarily have trust of the end destination being dispatcher to, nor the packet switchers in-between.
How can I catch this OPTIONS packet to manipulate the value? It doesn’t appear to go through the REQUEST route or the ONSEND route.
Thanks!
________________________________
Andrew White - Director uConnected Email: andrew@uconnected.com.au Web: www.uConnected.com.au
You can make it global with:
user_agent_header="User-Agent: My Super SIP Server"
https://www.kamailio.org/wiki/cookbooks/5.2.x/core#user_agent_header
Fred Posner fred@qxork.com https://qxork.com Direct/SMS: +1 (224) 334-3733 Direct/SMS: +1 (336) 439-3733
Need Fred? Call Fred. 336-HEY-FRED Matrix: @fred:matrix.lod.com
On 3/27/19 11:11 AM, Andrew White wrote:
Hi all,
I’ve set the server_header variable in my primary config, and I’ve got a catch in the default reply route to modify headers where required. I’m masking this value for security reasons, and filling it with my own value for vanity reasons :).
I’ve noticed that the OPTIONS packet that is send via the dispatcher module when probing mode is on contains a User-Agent field which has the full version and OS type. Unfortunately I don’t necessarily have trust of the end destination being dispatcher to, nor the packet switchers in-between.
How can I catch this OPTIONS packet to manipulate the value? It doesn’t appear to go through the REQUEST route or the ONSEND route.
Thanks!
Andrew White - Director uConnected Email: andrew@uconnected.com.au mailto:andrew@uconnected.com.au Web: www.uConnected.com.au
Kamailio (SER) - Users Mailing List sr-users@lists.kamailio.org https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users
Thanks Fred, works like a charm!
Might be worth adding to https://www.kamailio.org/wiki/tutorials/security/kamailio-security https://www.kamailio.org/wiki/tutorials/security/kamailio-security in the same section as masking the Server header. I never considered the cookbook for this, I’d gotten the original idea from the security suggestions page!
Thanks again :).
________________________________
Andrew White - Director uConnected Email: andrew@uconnected.com.au Web: www.uConnected.com.au
On 28 Mar 2019, at 2:19 am, Fred Posner fred@palner.com wrote:
You can make it global with:
user_agent_header="User-Agent: My Super SIP Server"
https://www.kamailio.org/wiki/cookbooks/5.2.x/core#user_agent_header
Fred Posner fred@qxork.com https://qxork.com Direct/SMS: +1 (224) 334-3733 Direct/SMS: +1 (336) 439-3733
Need Fred? Call Fred. 336-HEY-FRED Matrix: @fred:matrix.lod.com
On 3/27/19 11:11 AM, Andrew White wrote:
Hi all, I’ve set the server_header variable in my primary config, and I’ve got a catch in the default reply route to modify headers where required. I’m masking this value for security reasons, and filling it with my own value for vanity reasons :). I’ve noticed that the OPTIONS packet that is send via the dispatcher module when probing mode is on contains a User-Agent field which has the full version and OS type. Unfortunately I don’t necessarily have trust of the end destination being dispatcher to, nor the packet switchers in-between. How can I catch this OPTIONS packet to manipulate the value? It doesn’t appear to go through the REQUEST route or the ONSEND route. Thanks! ________________________________ Andrew White - Director uConnected Email: andrew@uconnected.com.au mailto:andrew@uconnected.com.au Web: www.uConnected.com.au _______________________________________________ Kamailio (SER) - Users Mailing List sr-users@lists.kamailio.org https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users
Kamailio (SER) - Users Mailing List sr-users@lists.kamailio.org https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users
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Andrew White -
Fred Posner