Changes between Version 1 and Version 2 of get-around-nat-blocked-traffic-filtering


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Timestamp:
Feb 10, 2011 12:41:28 PM (8 years ago)
Author:
bennylp
Comment:

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  • get-around-nat-blocked-traffic-filtering

    v1 v2  
    1414[[BR]] 
    1515 
    16 == Settings == 
    17  
    18 === Use TCP/TLS for SIP Traffic === 
     16== Use TCP/TLS for SIP Traffic == 
    1917 
    2018'''Problems to solve''' 
     
    3230 You will need to configure your proxy to record route so that the proxy is always reachable via TCP (otherwise if the UAS sends a Contact URI without {{{";transport=tcp"}}} parameter, we will send subsequent requests within the dialog via UDP). 
    3331 
    34 === Disable STUN === 
     32== Disable STUN == 
    3533 
    3634'''Problems to solve''' 
     
    4240 
    4341'''Solution''' 
    44  For the problems above, you may consider disabling STUN altogether! This may sound like a silly approach but it does work especially if NEITM actively mangles SIP messages to assist NAT traversal (I assume it's because then it will be easier for it to spot the private IP addresses which should be replaced in a SIP message).  
     42 For the problems above, you may consider disabling STUN altogether! This may sound like a silly approach but it does work especially if NEITM actively mangles SIP messages to assist NAT traversal (I assume it's because then it will be easier for it to spot the private IP addresses which need mangling in a SIP message).  
    4543 
    4644 In the case where NEITM doesn't assist NAT traversal, your server (in public Internet) must terminate RTP traffic, because RTP traffic won't be able to go end to end between clients.  
    4745 
    4846 
    49 === Relay RTP via TURN/TCP === 
     47== Relay RTP via TURN/TCP == 
    5048 
    5149'''Problems to solve''' 
     
    5856 
    5957 
    60 === Use Non-standard Ports for VoIP Services === 
     58== Use Non-standard Ports for VoIP Services == 
    6159 
    6260'''Problems to solve'''