[Spce-user] UA filter

[Andy Clark]

Hi Daniel,
i'm trying to implement UA filter using your online tutorial, unfortunately
after implantation i'm getting a 408 when trying to register

would you be able to look over the code

Thank you

https://www.sipwise.org/news/technical/securing-your-ngcp-against-sip-attacks/

if(!sanity_check("1511", "7"))
{
xlog("L_WARN", "Malformed SIP message detected - [% logreq_init -%]\n");
exit;
##  filtering by UA : blacklist
if( is_method(“REGISTER|INVITE”) && ($ua =~ “friendly-scanner” || $ua =~
“sipvicious” || $ua =~ “^sipcli.+”) )
{
xlog(“L_WARN”, “Request rejected, malicious UA=’$ua’ from IP=$si – [%
logreq_init -%]\n”);
exit;
}
}
# checking if a request is a retransmission, if so it will exit
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