Hi Howard,
also take note that registration and making calls are tw different
things. First of all, registration is not required for placing calls -
unregistered user may dial. Also even if you authenticate the
registrations, you should also authenticate the calls originated by your
users.
regards,
bogdan
Howard Tang wrote:
Hi Christian,
Thank you for point that out. I found that the person is one of my
users, but he put username in x-lite different from the auth username.
That is why i see a different number. and your solution fixed the
issue!
Thanks a lot.
Regards,
Howard
On 1/18/07, Christian Schlatter <[EMAIL PROTECTED]> wrote:
Howard Tang wrote:
> Hi,
>
> I realized some one is able to make call and registered to my sip
> proxy while he/she is not in the subscriber table.
>
> I couldn't find his/her username in the subscriber table, but i was
> able to see him/her in the location table. I am able to see he/she
> made 10 calls from my sip proxy.
>
> Anyone have an idea on what i have done wrong? I have included the
> authentication part of code here.
Your config looks ok to me but it will allow someone with a valid digest
username/password combination to register *any* AOR SIP URI. One method
to avoid that is to use check_to() from the uri_db module.
Similarly you can use check_from() to make sure that endpoints use a SIP
From header that exists in the subscriber table.
SIP digest credentials are independent from the used SIP URIs allowing
e.g. third party registration. That means I could add a registration for
your AOR SIP URI. But obviously this also introduces a risk for misuse.
I've added check_to() and check_from() to your config.
- Christian
# -- uri_db params --
modparam("uri_db", "db_url",
"mysql://M4_DB_RWUSER:[EMAIL PROTECTED]/M4_DB_NAME")
modparam("uri_db", "subscriber_table", "subscriber")
modparam("uri_db", "use_uri_table", 0) # use subscriber table
modparam("uri_db", "use_domain", 0) # only check username (no multi
# domain support)
>
> if (uri==myself) {
> if (method=="REGISTER") {
> # Uncomment this if you want to use digest
> authentication
> if (!www_authorize("x.x.x.x", "subscriber")) {
> www_challenge("x.x.x.x", "0");
> exit;
> };
if (!check_to()) {
sl_send_reply("401", "Unauthorized");
exit;
}
> consume_credentials();
> save("location");
> exit;
> };
>
> if (method=="INVITE") {
> if (!proxy_authorize("","subscriber")) {
> proxy_challenge("x.x.x.x","0");
> exit;
> }
if (!check_from()) {
sl_send_reply("403", "Use From=ID");
exit;
}
> consume_credentials();
> };
>
> lookup("aliases");
> if (!uri==myself) {
> append_hf("P-hint: outbound alias\r\n");
> route(1);
> };
>
>
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