Hello,

I have an issue with filtering on the asterisk side, my requests are:
UsersPhones(bria) -> Kamailio -> Asterisk -> Sip Trunk Out.

The goal is to manage a new layer of protection ( IP filtering / Whitelisting ).
When I try to compile a list of Whitelisted IP in sip.conf I get this error:

NOTICE[205]: acl.c:748 ast_apply_acl: SIP contact ACL: Rejecting
'145.72.23.45' due to a failure to pass ACL '(BASELINE)'
WARNING[205]: chan_sip.c:17061 parse_register_contact: Domain
'5.12.16.2:48669' disallowed by contact ACL (violating IP
145.72.23.45)
WARNING[205]: chan_sip.c:17933 register_verify: Registration denied
because of contact ACL

The IP 145.72.23.45, is the proxy kamailio and if I added it to
sip.conf it works, but so does every ip afterwards.

I tried with contactpermit also with permit, the result is the same as
long as I permit the proxy ip it works. Is there something that I can
do on the asterisk side to activate this filtering Or there is
something that I can do in Kamailio so it will forward the realip ?

contactdeny=0.0.0.0/0.0.0.0
contactpermit=145.72.23.45/32
contactpermit=5.12.16.2/32


Thanks in advance,

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