Need for help, siproxd does not work well....@@...

Dear all:

           Sorry, I am a newbie of siproxd, and have some problem when using
siproxd...

The architecture is following:

private IP address range             :          Internet public IP address
range

   192.168.2.1                          :          10.90.8.40

                                        :

   192.168.2.91                         :  foo.bar.org          10.90.8.185

   +-------------+             +--------------+              +-------------+

   !             !          .1 ! masquerading ! publicIP     !             !

   ! IntHost     !-------------! Firewall     !------------>>! externalHost!

   !             !         eth2!              !eth1          !             !

   +-------------+             +--------------+              +-------------+

   user: 1111                                                user: 2222

Both of user 1111 and user 2222 are registered to siproxd, and 

I want to make a call from "1111" to "2222" and make a call from "2222" to
"1111".

 

       I installed siproxd into a machine with two network interfaces: eth1
(public IP address, but we use 10.90.8.40 for simulation), eth2 (private IP
address, 192.168.2.1). 

To enable NAT, I executed following commands:

1. iptables -A INPUT -i eth2 -j ACCEPT

2. echo "1" > /proc/sys/net/ipv4/ip_forward

3. iptables -t nat -A POSTROUTING -s 192.168.2.0/24 -o eth1 -j MASQUERADE

Then execute 

1. iptables -A INPUT -i eth1 -p udp -m udp --dport 5060 -j ACCEPT

2. iptables -A INPUT -i eth1 -p udp -m udp --dport 2:65000 -j ACCEPT

to receive SIP and RTP message from eth1.

Finally execute "siproxd".

My configuration is following:

# The interface names of INBOUND and OUTBOUND interface.####

if_inbound  = eth2

if_outbound = eth1

host_outbound = 10.90.8.40

 

# Access control.#

hosts_allow_reg = 192.168.2.0/24,10.90.8.0/24

hosts_allow_sip = 192.168.2.0/24,10.90.8.0/24

 

# Port to listen for incoming SIP messages.#

sip_listen_port = 5060

 

# Shall we daemonize?#

daemonize = 0

 

# What shall I log to syslog?#

silence_log = 0

 

# Shall I log call establishment to syslog?#

log_calls = 1

 

# Secure Enviroment settings:#

user = root

 

# Registration file:#

registration_file = /usr/local/sipproxd/etc/siproxd_registrations

 

# Automatically save current registrations every 'n' seconds#

autosave_registrations = 300

 

# PID file:#

pid_file = /usr/local/sipproxd/etc/siproxd.pid

 

# global switch to control the RTP proxy behaviour#

rtp_proxy_enable = 0

 

# Port range to allocate listen ports from for incoming RTP traffic

rtp_port_low  = 2

rtp_port_high = 65000

 

# Timeout for RTP streams#

rtp_timeout = 300

 

# Default Expiration timeout for Registrations#

default_expires = 600

 

# Proxy authentication#

proxy_auth_pwfile = usr/local/sipproxd/etc/siproxd_passwd.cfg

 

# Debug level... (setting to -1 will enable everything)#

debug_level =      0x00000000

 

But when 1111 makes a call to 2222 , the call is failed. 2222 is ringing,
but when taking the call, 1111 will send CANCEL message..@@

When 2222 makes a call to 1111, the signaling is OK , but there is only one
way RTP from 1111 to 2222.@@

 

Is it something wrong of the configuration file? Or the NAT setting ? .. @@
, please help, Thank you 

 

Best Regards,

sam