Possible HACK

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patrickrivard

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Can anyone shed some light on this LOG file?
It appears that someone is trying to HACK into our 3CX server, but I have no clue on how to proceed to resolve this issue...
I have blocked a bunch of IP in the IP Black List of the Security Tab in the Management console, but aside of that what can be done???
In the following LOG, I have replaced our External IP with XXX.XXX.XXX.XXX, but the rest is all original but also unknown IP...

04-Oct-2015 22:39:54.479 [CM102001]: Authentication failed for AuthFail Recv Req INVITE from 195.154.207.24:52952 tid=aa44cd2b-e835-472b-a04d-be340961e392 Call-ID=dyegrwcbqwbdwgmnjpvoartwddxfbtwybkomxlwdiexjlrsdvw:
INVITE sip:[email protected] SIP/2.0
Via: SIP/2.0/UDP 195.154.207.24:52952;branch=z9hG4bKaa44cd2b-e835-472b-a04d-be340961e392;rport=52952
Max-Forwards: 70
Contact: <sip:[email protected]:52952>
To: <sip:[email protected]>
From: "c"<sip:[email protected]>;tag=pfslqleh
Call-ID: dyegrwcbqwbdwgmnjpvoartwddxfbtwybkomxlwdiexjlrsdvw
CSeq: 2 INVITE
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, SUBSCRIBE, NOTIFY, REFER, INFO, MESSAGE
Content-Type: application/sdp
Proxy-Authorization: Digest username="c",realm="3CXPhoneSystem",nonce="414d535c0c2273fa31:d21c96184c423d3efac7afba94e4693d",response="91f25bd9114132cae55e2063bfd9e37d",uri="sip:[email protected]",algorithm=MD5
User-Agent: Ozeki VoIP SIP SDK v10.1.13
Content-Length: 392

v=0
o=- 302631338 302631338 IN IP4 195.154.207.24
s=Ozeki VoIP SIP SDK v10.1.13
c=IN IP4 195.154.207.24
t=0 0
m=audio 52948 RTP/AVP 18 8 0 3 100
a=rtpmap:18 G729/8000
a=fmtp:18 annexb=no
a=rtpmap:8 PCMA/8000
a=rtpmap:0 PCMU/8000
a=rtpmap:3 GSM/8000
a=rtpmap:100 SPEEX/16000
a=sendrecv
m=video 52945 RTP/AVP 99
a=rtpmap:99 H264/90000
a=fmtp:99 packetization-mode=1
a=sendrecv
; Reason: Credentials don't match, check that authorization-ID and password match the ones in extension settings
04-Oct-2015 22:39:54.479 [CM302002]: Authentication failed due to unidentified source of: SipReq: INVITE [email protected] tid=aa44cd2b-e835-472b-a04d-be340961e392 cseq=INVITE [email protected]:52952 / 2 from(wire)
04-Oct-2015 22:39:52.439 [CM102001]: Authentication failed for AuthFail Recv Req INVITE from 195.154.207.24:52952 tid=03e66996-95c3-4d1d-a33b-3d8448e9bcf8 Call-ID=hedjlenchiykjwgwvwmxdetjajggjnfxgbfvumhrvmcoicpelv:
INVITE sip:[email protected] SIP/2.0
Via: SIP/2.0/UDP 195.154.207.24:52952;branch=z9hG4bK03e66996-95c3-4d1d-a33b-3d8448e9bcf8;rport=52952
Max-Forwards: 70
Contact: <sip:[email protected]:52952>
To: <sip:[email protected]>
From: "c"<sip:[email protected]>;tag=ybonncjt
Call-ID: hedjlenchiykjwgwvwmxdetjajggjnfxgbfvumhrvmcoicpelv
CSeq: 2 INVITE
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, SUBSCRIBE, NOTIFY, REFER, INFO, MESSAGE
Content-Type: application/sdp
Proxy-Authorization: Digest username="c",realm="3CXPhoneSystem",nonce="414d535c0c2273f886:23f4ef11b001a6f092e318147f90977b",response="bdd2ac799ceba6784ff9948da11fa31f",uri="sip:[email protected]",algorithm=MD5
User-Agent: Ozeki VoIP SIP SDK v10.1.13
Content-Length: 394

v=0
o=- 1133145147 1133145147 IN IP4 195.154.207.24
s=Ozeki VoIP SIP SDK v10.1.13
c=IN IP4 195.154.207.24
t=0 0
m=audio 52942 RTP/AVP 18 8 0 3 100
a=rtpmap:18 G729/8000
a=fmtp:18 annexb=no
a=rtpmap:8 PCMA/8000
a=rtpmap:0 PCMU/8000
a=rtpmap:3 GSM/8000
a=rtpmap:100 SPEEX/16000
a=sendrecv
m=video 52959 RTP/AVP 99
a=rtpmap:99 H264/90000
a=fmtp:99 packetization-mode=1
a=sendrecv
; Reason: Credentials don't match, check that authorization-ID and password match the ones in extension settings
04-Oct-2015 22:39:52.439 [CM302002]: Authentication failed due to unidentified source of: SipReq: INVITE [email protected] tid=03e66996-95c3-4d1d-a33b-3d8448e9bcf8 cseq=INVITE [email protected]:52952 / 2 from(wire)
04-Oct-2015 22:39:50.352 [CM102001]: Authentication failed for AuthFail Recv Req INVITE from 195.154.207.24:52952 tid=21e24306-fbcd-46d8-b059-71e3840a8528 Call-ID=wseuheoeafvyvuvwqyydiuqyiacqhxwhybnluoaaeaepnpbhdk:
INVITE sip:[email protected] SIP/2.0
Via: SIP/2.0/UDP 195.154.207.24:52952;branch=z9hG4bK21e24306-fbcd-46d8-b059-71e3840a8528;rport=52952
Max-Forwards: 70
Contact: <sip:[email protected]:52952>
To: <sip:[email protected]>
From: "c"<sip:[email protected]>;tag=pdwkkcce
Call-ID: wseuheoeafvyvuvwqyydiuqyiacqhxwhybnluoaaeaepnpbhdk
CSeq: 2 INVITE
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, SUBSCRIBE, NOTIFY, REFER, INFO, MESSAGE
Content-Type: application/sdp
Proxy-Authorization: Digest username="c",realm="3CXPhoneSystem",nonce="414d535c0c2273f646:18250ced975f8cc8b47a11e1c6d88564",response="8457e4daf92adaabfb89d63651879f8c",uri="sip:[email protected]",algorithm=MD5
User-Agent: Ozeki VoIP SIP SDK v10.1.13
Content-Length: 394

v=0
o=- 1592679041 1592679041 IN IP4 195.154.207.24
s=Ozeki VoIP SIP SDK v10.1.13
c=IN IP4 195.154.207.24
t=0 0
m=audio 52962 RTP/AVP 18 8 0 3 100
a=rtpmap:18 G729/8000
a=fmtp:18 annexb=no
a=rtpmap:8 PCMA/8000
a=rtpmap:0 PCMU/8000
a=rtpmap:3 GSM/8000
a=rtpmap:100 SPEEX/16000
a=sendrecv
m=video 52966 RTP/AVP 99
a=rtpmap:99 H264/90000
a=fmtp:99 packetization-mode=1
a=sendrecv
; Reason: Credentials don't match, check that authorization-ID and password match the ones in extension settings
04-Oct-2015 22:39:50.351 [CM302002]: Authentication failed due to unidentified source of: SipReq: INVITE [email protected] tid=21e24306-fbcd-46d8-b059-71e3840a8528 cseq=INVITE [email protected]:52952 / 2 from(wire)
04-Oct-2015 22:39:48.317 [CM102001]: Authentication failed for AuthFail Recv Req INVITE from 195.154.207.24:52952 tid=d54608d7-ea2b-4c84-8fe1-f567134b93c0 Call-ID=scoacueynfrhkhjfahpwxgcxtsmovesvsiifmynhpfpgcbwvjt:
INVITE sip:[email protected] SIP/2.0
Via: SIP/2.0/UDP 195.154.207.24:52952;branch=z9hG4bKd54608d7-ea2b-4c84-8fe1-f567134b93c0;rport=52952
Max-Forwards: 70
Contact: <sip:[email protected]:52952>
To: <sip:[email protected]>
From: "c"<sip:[email protected]>;tag=wekhtmaq
Call-ID: scoacueynfrhkhjfahpwxgcxtsmovesvsiifmynhpfpgcbwvjt
CSeq: 2 INVITE
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, SUBSCRIBE, NOTIFY, REFER, INFO, MESSAGE
Content-Type: application/sdp
Proxy-Authorization: Digest username="c",realm="3CXPhoneSystem",nonce="414d535c0c2273f401:48d3216639ff9697c8de19468589f552",response="96d7299241ca77015b69c38f01c2411a",uri="sip:[email protected]",algorithm=MD5
User-Agent: Ozeki VoIP SIP SDK v10.1.13
Content-Length: 394

v=0
o=- 1217459954 1217459954 IN IP4 195.154.207.24
s=Ozeki VoIP SIP SDK v10.1.13
c=IN IP4 195.154.207.24
t=0 0
m=audio 52965 RTP/AVP 18 8 0 3 100
a=rtpmap:18 G729/8000
a=fmtp:18 annexb=no
a=rtpmap:8 PCMA/8000
a=rtpmap:0 PCMU/8000
a=rtpmap:3 GSM/8000
a=rtpmap:100 SPEEX/16000
a=sendrecv
m=video 52942 RTP/AVP 99
a=rtpmap:99 H264/90000
a=fmtp:99 packetization-mode=1
a=sendrecv
; Reason: Credentials don't match, check that authorization-ID and password match the ones in extension settings
04-Oct-2015 22:39:48.316 [CM302002]: Authentication failed due to unidentified source of: SipReq: INVITE [email protected] tid=d54608d7-ea2b-4c84-8fe1-f567134b93c0 cseq=INVITE [email protected]:52952 / 2 from(wire)
04-Oct-2015 22:39:46.284 [CM102001]: Authentication failed for AuthFail Recv Req INVITE from 195.154.207.24:52952 tid=ae8d4597-dbe3-4970-8a4d-30d4a8e500bb Call-ID=gcgtdhqotuuxmjlrfkbhettbkeikppguamadedvssmkxwssarj:
INVITE sip:[email protected] SIP/2.0
Via: SIP/2.0/UDP 195.154.207.24:52952;branch=z9hG4bKae8d4597-dbe3-4970-8a4d-30d4a8e500bb;rport=52952
Max-Forwards: 70
Contact: <sip:[email protected]:52952>
To: <sip:[email protected]>
From: "c"<sip:[email protected]>;tag=yprxhmif
Call-ID: gcgtdhqotuuxmjlrfkbhettbkeikppguamadedvssmkxwssarj
CSeq: 2 INVITE
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, SUBSCRIBE, NOTIFY, REFER, INFO, MESSAGE
Content-Type: application/sdp
Proxy-Authorization: Digest username="c",realm="3CXPhoneSystem",nonce="414d535c0c2273f291:ba889dfc74c3d9815cc895a406d0dfaf",response="9a918c1ecdeb3c5bece5d6ab1389380d",uri="sip:[email protected]",algorithm=MD5
User-Agent: Ozeki VoIP SIP SDK v10.1.13
Content-Length: 392

v=0
o=- 265493167 265493167 IN IP4 195.154.207.24
s=Ozeki VoIP SIP SDK v10.1.13
c=IN IP4 195.154.207.24
t=0 0
m=audio 52945 RTP/AVP 18 8 0 3 100
a=rtpmap:18 G729/8000
a=fmtp:18 annexb=no
a=rtpmap:8 PCMA/8000
a=rtpmap:0 PCMU/8000
a=rtpmap:3 GSM/8000
a=rtpmap:100 SPEEX/16000
a=sendrecv
m=video 52957 RTP/AVP 99
a=rtpmap:99 H264/90000
a=fmtp:99 packetization-mode=1
a=sendrecv
; Reason: Credentials don't match, check that authorization-ID and password match the ones in extension settings
04-Oct-2015 22:39:46.284 [CM302002]: Authentication failed due to unidentified source of: SipReq: INVITE [email protected] tid=ae8d4597-dbe3-4970-8a4d-30d4a8e500bb cseq=INVITE [email protected]:52952 / 2 from(wire)
04-Oct-2015 22:39:44.248 [CM102001]: Authentication failed for AuthFail Recv Req INVITE from 195.154.207.24:52952 tid=132cf456-898a-4294-86ba-7e9c9fe40a68 Call-ID=wktaooxvnsdwybaimvjsbbuhfguswetisbvkamrucgsiaryvdv:
INVITE sip:[email protected] SIP/2.0
Via: SIP/2.0/UDP 195.154.207.24:52952;branch=z9hG4bK132cf456-898a-4294-86ba-7e9c9fe40a68;rport=52952
Max-Forwards: 70
Contact: <sip:[email protected]:52952>
To: <sip:[email protected]>
From: "c"<sip:[email protected]>;tag=nrrmavom
Call-ID: wktaooxvnsdwybaimvjsbbuhfguswetisbvkamrucgsiaryvdv
CSeq: 2 INVITE
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, SUBSCRIBE, NOTIFY, REFER, INFO, MESSAGE
Content-Type: application/sdp
Proxy-Authorization: Digest username="c",realm="3CXPhoneSystem",nonce="414d535c0c2273f060:adf77f7388e608f7b9211400e9de689a",response="5be94ca4773034b0714844b5f980846f",uri="sip:[email protected]",algorithm=MD5
User-Agent: Ozeki VoIP SIP SDK v10.1.13
Content-Length: 392

v=0
o=- 954803414 954803414 IN IP4 195.154.207.24
s=Ozeki VoIP SIP SDK v10.1.13
c=IN IP4 195.154.207.24
t=0 0
m=audio 52966 RTP/AVP 18 8 0 3 100
a=rtpmap:18 G729/8000
a=fmtp:18 annexb=no
a=rtpmap:8 PCMA/8000
a=rtpmap:0 PCMU/8000
a=rtpmap:3 GSM/8000
a=rtpmap:100 SPEEX/16000
a=sendrecv
m=video 52961 RTP/AVP 99
a=rtpmap:99 H264/90000
a=fmtp:99 packetization-mode=1
a=sendrecv
; Reason: Credentials don't match, check that authorization-ID and password match the ones in extension settings
04-Oct-2015 22:39:44.247 [CM302002]: Authentication failed due to unidentified source of: SipReq: INVITE [email protected] tid=132cf456-898a-4294-86ba-7e9c9fe40a68 cseq=INVITE [email protected]:52952 / 2 from(wire)
04-Oct-2015 22:39:42.240 [CM102001]: Authentication failed for AuthFail Recv Req INVITE from 195.154.207.24:52952 tid=abf7241b-7781-4e48-af4b-1042edc2fb11 Call-ID=yseplxntsstakstbwmrpodjowuvbvvqdhrejkphlwnfyulxwob:
INVITE sip:[email protected] SIP/2.0
Via: SIP/2.0/UDP 195.154.207.24:52952;branch=z9hG4bKabf7241b-7781-4e48-af4b-1042edc2fb11;rport=52952
Max-Forwards: 70
Contact: <sip:[email protected]:52952>
To: <sip:[email protected]>
From: "c"<sip:[email protected]>;tag=seotfujp
Call-ID: yseplxntsstakstbwmrpodjowuvbvvqdhrejkphlwnfyulxwob
CSeq: 2 INVITE
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, SUBSCRIBE, NOTIFY, REFER, INFO, MESSAGE
Content-Type: application/sdp
Proxy-Authorization: Digest username="c",realm="3CXPhoneSystem",nonce="414d535c0c2273ee67:289a31ac641c8400f78215aab2742d92",response="76224d166d8243c39d2f18ed8b95f2bd",uri="sip:[email protected]",algorithm=MD5
User-Agent: Ozeki VoIP SIP SDK v10.1.13
Content-Length: 392

v=0
o=- 649468010 649468010 IN IP4 195.154.207.24
s=Ozeki VoIP SIP SDK v10.1.13
c=IN IP4 195.154.207.24
t=0 0
m=audio 52954 RTP/AVP 18 8 0 3 100
a=rtpmap:18 G729/8000
a=fmtp:18 annexb=no
a=rtpmap:8 PCMA/8000
a=rtpmap:0 PCMU/8000
a=rtpmap:3 GSM/8000
a=rtpmap:100 SPEEX/16000
a=sendrecv
m=video 52966 RTP/AVP 99
a=rtpmap:99 H264/90000
a=fmtp:99 packetization-mode=1
a=sendrecv
; Reason: Credentials don't match, check that authorization-ID and password match the ones in extension settings
04-Oct-2015 22:39:42.240 [CM302002]: Authentication failed due to unidentified source of: SipReq: INVITE [email protected] tid=abf7241b-7781-4e48-af4b-1042edc2fb11 cseq=INVITE [email protected]:52952 / 2 from(wire)
04-Oct-2015 22:39:40.121 [CM102001]: Authentication failed for AuthFail Recv Req INVITE from 195.154.207.24:52952 tid=17471c90-e1f0-4d2d-ad2e-a81ad52054cc Call-ID=xavbvmqtnlmktsdligdayjtctrgihlosrqsvjopiilvxowxtla:
INVITE sip:[email protected] SIP/2.0
Via: SIP/2.0/UDP 195.154.207.24:52952;branch=z9hG4bK17471c90-e1f0-4d2d-ad2e-a81ad52054cc;rport=52952
Max-Forwards: 70
Contact: <sip:[email protected]:52952>
To: <sip:[email protected]>
From: "c"<sip:[email protected]>;tag=twysmoft
Call-ID: xavbvmqtnlmktsdligdayjtctrgihlosrqsvjopiilvxowxtla
CSeq: 2 INVITE
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, SUBSCRIBE, NOTIFY, REFER, INFO, MESSAGE
Content-Type: application/sdp
Proxy-Authorization: Digest username="c",realm="3CXPhoneSystem",nonce="414d535c0c2273eb18:422704f5be36b6b32ab6dee2a49344c8",response="ad2c8ce2ea3ec47072fa867ac2c99813",uri="sip:[email protected]",algorithm=MD5
User-Agent: Ozeki VoIP SIP SDK v10.1.13
Content-Length: 394

v=0
o=- 1880510428 1880510428 IN IP4 195.154.207.24
s=Ozeki VoIP SIP SDK v10.1.13
c=IN IP4 195.154.207.24
t=0 0
m=audio 52965 RTP/AVP 18 8 0 3 100
a=rtpmap:18 G729/8000
a=fmtp:18 annexb=no
a=rtpmap:8 PCMA/8000
a=rtpmap:0 PCMU/8000
a=rtpmap:3 GSM/8000
a=rtpmap:100 SPEEX/16000
a=sendrecv
m=video 52946 RTP/AVP 99
a=rtpmap:99 H264/90000
a=fmtp:99 packetization-mode=1
a=sendrecv
; Reason: Credentials don't match, check that authorization-ID and password match the ones in extension settings
04-Oct-2015 22:39:40.121 [CM302002]: Authentication failed due to unidentified source of: SipReq: INVITE [email protected] tid=17471c90-e1f0-4d2d-ad2e-a81ad52054cc cseq=INVITE [email protected]:52952 / 2 from(wire)
04-Oct-2015 21:36:46.827 PBX has dropped a message with 'User-Agent: friendly-scanner' from IP 5.189.163.147 because it is on blocked UAs list
 
Turn down the number of failures required to be banned and turn up the length of time they are banned. Not much to do assuming you are using strong passwords. They will run out of patience and IP address space long before they get in.
 
Can you just whitelist (only allow) your SIP provider in your firewall for port 5060?

Allen
 
@ SWINK; I have performed the suggested mod to the default settings... Let's see if it'll help... Thanks

@ 12494; Allen, This is a really good idea. I will try to find out how to implement in our Firewall and see if this also helps...

These were good and constructive comments. It is really appreciated.
Any other comments/advice or solutions are welcome!

I will try to keep this post updated with our results...

Thank you
 
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