Hi,

Do you have any client that is sending a corrupt request to the "AddPac SIP Gateway" at 190.22.140.170, so that this gateway is replying "400 bad request" ? Maybe you could resolve this problem at the source..

If it's not the case, you can send an email to the owner of the IP address.
A quick lookup on the IP address on www.network-tools.com gives you a hint on the owner.

Reda

On Tue, Apr 17, 2012 at 17:19, Vineet Menon <mvineetmenon@gmail.com> wrote:

IMHO preventing the packet to reach kamailio is better (via iptables) than doing something in kamailio itself....

Regards,

Vineet Menon

On 17 April 2012 20:32, Ricardo Martinez <rmartinez@redvoiss.net> wrote:

Hello.
I was wondering if someone could help me here. From time to time I stat to receive from the internet this SIP message :

U 190.22.140.170:51316 -> 64.76.154.110:5060

SIP/2.0 400 BadRequest.
Via: .
From: .
To: .

Call-ID: .
CSeq: .
User-Agent: AddPac SIP Gateway.
Content-Length: 0.
.

At burst rate of 124 pps (packets per second), this meesage is entering to Kamailio routine and generating a lot of ERROR logs lie these :

Apr 1 03:32:19 kmborde /usr/local/sbin/kamailio[2311]: ERROR: <core> [parser/msg_parser.c:179]: ERROR: get_hdr_field: bad to header
Apr 1 03:32:19 kmborde /usr/local/sbin/kamailio[2311]: INFO: <core> [parser/msg_parser.c:353]: ERROR: bad header field [To: <sip:Re
gister=>5]

Apr 1 03:32:19 kmborde /usr/local/sbin/kamailio[2311]: ERROR: <core> [parser/msg_parser.c:179]: ERROR: get_hdr_field: bad to header
Apr 1 03:32:19 kmborde /usr/local/sbin/kamailio[2311]: INFO: <core> [parser/msg_parser.c:353]: ERROR: bad header field [To: <sip:Re

gister=>5]
Apr 1 03:32:19 kmborde /usr/local/sbin/kamailio[2311]: ERROR: <core> [parser/msg_parser.c:179]: ERROR: get_hdr_field: bad to header

Apr 1 03:32:19 kmborde /usr/local/sbin/kamailio[2311]: INFO: <core> [parser/msg_parser.c:353]: ERROR: bad header field [To: <sip:Re
gister=>5]

Apr 1 03:32:19 kmborde /usr/local/sbin/kamailio[2311]: ERROR: <core> [msg_translator.c:1943]: ERROR: build_res_buf_from_sip_req: al
as, parse_headers failed

Apr 1 03:32:19 kmborde /usr/local/sbin/kamailio[2311]: WARNING: sanity [sanity.c:254]: sanity_check(): check_required_headers(): fa
iled to send 400 via sl reply

Apr 1 03:32:20 kmborde /usr/local/sbin/kamailio[2301]: ERROR: <core> [parser/msg_parser.c:179]: ERROR: get_hdr_field: bad to header
Apr 1 03:32:20 kmborde /usr/local/sbin/kamailio[2301]: INFO: <core> [parser/msg_parser.c:353]: ERROR: bad header field [To: <sip:Re

gister=>5]
Apr 1 03:32:20 kmborde /usr/local/sbin/kamailio[2301]: ERROR: <core> [parser/msg_parser.c:179]: ERROR: get_hdr_field: bad to header

Apr 1 03:32:20 kmborde /usr/local/sbin/kamailio[2301]: INFO: <core> [parser/msg_parser.c:353]: ERROR: bad header field [To: <sip:Re
gister=>5]

Apr 1 03:32:20 kmborde /usr/local/sbin/kamailio[2301]: ERROR: <core> [parser/msg_parser.c:179]: ERROR: get_hdr_field: bad to header
Apr 1 03:32:20 kmborde /usr/local/sbin/kamailio[2301]: INFO: <core> [parser/msg_parser.c:353]: ERROR: bad header field [To: <sip:Re

gister=>5]
Apr 1 03:32:20 kmborde /usr/local/sbin/kamailio[2301]: ERROR: <core> [msg_translator.c:1943]: ERROR: build_res_buf_from_sip_req: al

as, parse_headers failed
Apr 1 03:32:20 kmborde /usr/local/sbin/kamailio[2301]: WARNING: sanity [sanity.c:254]: sanity_check(): check_required_headers(): fa

iled to send 400 via sl reply
Apr 1 03:32:23 kmborde /usr/local/sbin/kamailio[2320]: ERROR: <core> [parser/msg_parser.c:179]: ERROR: get_hdr_field: bad to header

Apr 1 03:32:23 kmborde /usr/local/sbin/kamailio[2320]: INFO: <core> [parser/msg_parser.c:353]: ERROR: bad header field [To: <sip:Re
gister=>5]

Apr 1 03:32:23 kmborde /usr/local/sbin/kamailio[2320]: ERROR: <core> [parser/msg_parser.c:179]: ERROR: get_hdr_field: bad to header
Apr 1 03:32:23 kmborde /usr/local/sbin/kamailio[2320]: INFO: <core> [parser/msg_parser.c:353]: ERROR: bad header field [To: <sip:Re

gister=>5]
Apr 1 03:32:23 kmborde /usr/local/sbin/kamailio[2320]: ERROR: <core> [parser/msg_parser.c:179]: ERROR: get_hdr_field: bad to header

Apr 1 03:32:23 kmborde /usr/local/sbin/kamailio[2320]: INFO: <core> [parser/msg_parser.c:353]: ERROR: bad header field [To: <sip:Re
gister=>5]

Apr 1 03:32:23 kmborde /usr/local/sbin/kamailio[2320]: ERROR: <core> [msg_translator.c:1943]: ERROR: build_res_buf_from_sip_req: al
as, parse_headers failed

Apr 1 03:32:23 kmborde /usr/local/sbin/kamailio[2320]: WARNING: sanity [sanity.c:254]: sanity_check(): check_required_headers(): fa
iled to send 400 via sl reply

The only way that I have now for blocking this packet to hit the Kamailio server is via iptables :

iptables -A INPUT -s 190.22.140.170 -p udp --dport 5060 --jump REJECT

Is there a better way to do this?!

Thanks in advance,

Ricardo Martinez.-

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