Inbound Calls generating 407 authentication required message

Discussion in '3CX Phone System - General' started by Ozemondaz, Dec 30, 2016.

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  1. Ozemondaz

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    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
     
  2. leejor

    leejor Well-Known Member

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    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.
     
  3. Ozemondaz

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

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    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:+13039743000@10.1.254.254:5060>;tag=c53ecc63
    From: "Level 3 Tech's NAME" <sip:+18147010013@100.125.24.93:5060>;tag=gK0603ee93
    Call-ID: 1866869436_81770901@100.125.24.93
    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:+13039743000@10.1.254.254:5060>;tag=c53ecc63
    From: "Level 3 Tech's NAME" <sip:+18147010013@100.125.24.93:5060>;tag=gK0603ee93
    Call-ID: 1866869436_81770901@100.125.24.93
    CSeq: 8762144 INVITE
    User-Agent: 3CXPhoneSystem 15.0.57336.0 (56355)
    Content-Length: 0
     
  5. MRM

    MRM

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    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
     
  6. Ozemondaz

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    MRM,

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

    Oze
     
  7. MRM

    MRM

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