Inbound Calls generating 407 authentication required message

[Ozemondaz]

Hello,

My outbound calls are working just fine but when I try to call in it kicks back a 407 Proxy Authentication Required Message. I have my SIP trunk configured with no authentication so I'm wondering if there is another setting somewhere that is making this happen.

Thank you,
Oze

 

[leejor]

You might want to list the provider you are using in the chance that someone else, on the forum, has had experience with them and the settings required.

 

[Ozemondaz]

My provider is Level 3 so i am using the Generic Provider with authentication set to Do not require - IP based.

 

[Ozemondaz]

I have copied the log sent by my provider showing the 407 response.

[83, 18:22:25:553990, 407 Proxy Authentication Required, 557 bytes, 10.1.254.254, 100.125.24.93, 5060, 5060] (open in a new window)
Summary:
Response Code: 407
Response Reason: Proxy Authentication Required
To: <sip:[email protected]:5060>;tag=c53ecc63
From: "Level 3 Tech's NAME" <sip:[email protected]:5060>;tag=gK0603ee93
Call-ID: [email protected]
CSeq: 8762144 INVITE

Detail Data:

---- ETH ----
Destination Address : 00-10-6B-03-D5-07
Source Address : E4-81-84-6F-CD-57
---- ETH II ----
81-00 = 8100h [33024d] Type : VLAN
---- Vlan ----
{000. .... .... ....} | Priority : 0
{...0 .... .... ....} | CFI : 0
{.... 0010 1011 1101} | Vlan ID : 701
81-00 = 8100h [33024d] Type : VLAN
---- Vlan ----
{000. .... .... ....} | Priority : 0
{...0 .... .... ....} | CFI : 0
{.... 0000 1101 0010} | Vlan ID : 210
08-00 = 800h [2048d] Protocol Type : IP Internet IP (IPv4)
---- IPv4 ----
---- IP header ----
{0100 ....} | version : IP Internet Protocol
{.... 0101} | Header length : in 32 bit units - must be 5 or more
---- Type of Service ----
{000. ....} | Precedence : Routine
{...0 ....} | Delay : Normal
{.... 0...} | Throughput : Normal
{.... .0..} | Reliability : Normal
{.... ..0.} | ECN Capable Transport(ECT) : No
{.... ...0} | Congestion Experienced(CE) : No
02-17 = 217h [535d] Total Length : in octets, including header length - must not be less than 20
74-20 = 7420h [29728d] Identification : 29728
{0... ....} | reserved : Not Set
{.0.. ....} | Don't Fragment (DF bit) : Not Set
{..0. ....} | More Fragments (MF bit) : Not Set
Fragment offset:
{...0 0000} | bits 12-8 : 0
{0000 0000} | bits 7-0 : 0
00-00 = 00h [000d] Fragment offset : 0
{0111 1100}= 7Ch [124d] Time to live : Hops
{0001 0001}= 11h [017d] protocol : UDP
42-DC = 42DCh [17116d] header checksum : 17116
source ip address : 10.1.254.254
destination ip address : 100.125.24.93
---- IP datagram ----
---- UDP ----
---- UDP header ----
13-C4 = 13C4h [5060d] source port : 5060
13-C4 = 13C4h [5060d] destination port : 5060
02-03 = 203h [515d] length: octets incl header not less than 8) : 515
AB-FC = ABFCh [44028d] checksum : 44028
---- UDP Datagram Data ----
---- SIP ----
SIP/2.0 407 Proxy Authentication Required
Via: SIP/2.0/UDP 100.125.24.93:5060;branch=z9hG4bK06Ba95cd9acf8378984
Proxy-Authenticate: Digest nonce="414d535c0e7639c192:36af4f05e7fd01f7dcf0d55416cba15f",algorithm=MD5,realm="3CXPhoneSystem"
To: <sip:[email protected]:5060>;tag=c53ecc63
From: "Level 3 Tech's NAME" <sip:[email protected]:5060>;tag=gK0603ee93
Call-ID: [email protected]
CSeq: 8762144 INVITE
User-Agent: 3CXPhoneSystem 15.0.57336.0 (56355)
Content-Length: 0

 

[MRM]

Hi Oz,

This code is similar to 401 - Unauthorized, but indicates that the client should first authenticate with a proxy server. The same discussion applies to error 407 as to error 401, except that an additional proxy server is involved for 407.

Regards

 

[Ozemondaz]

MRM,

Is this error popping up due to a setting in the 3CX?

Oze

 

[MRM]

Hi Oze,

Have a look thru this thread, it might help ...

https://www.3cx.com/community/threads/proxy-authentication-required.31495/

Please update the post on your findings and if you managed to solve the issue we would be grateful if you could share it with the community.

Regards