[Serusers] NAT and private addressing questions

Hello, I have over the last few weeks been trying to get ser to work with rtpproxy and NAT. Today I was finally able to make calls from and to a privately addressed UA located behind a NAT device. My questions are regarding the NAT example config that is included with the CVS and the section dealing with private addressing. In order for my calls to go through I had to remove one of the private ranges from the following section: route[1] { # !! Nathelper if (uri=~"[@:](192\.168\.|172\.(1[6-9]|2[0-9]|3[0-1])\.)" && !search("^Route:")){ sl_send_reply("479", "We don't forward to private IP addresses"); break; }; Why is there a need to restrict what goes to rtpproxy? Is it related to how nathelper flags a NATed UA? I think the nathelper module identifies a NATed UA by looking to see if the via and received parameters are different. There is also a note regarding private addressing (RFC 1918). Can someone clarify this relationship? Thank you in advance, Allan ______________________________________________________________________ Post your free ad now! http://personals.yahoo.ca