asterisk users - May 2009 - Proxying from one server to another

Hi All,

 

I'm trying to find a software package to do the following sip proxy
work:

 

I've an A*k server A that needs to be decommissioned, from the USA, and
replaced by server B, in the UK. Both servers are on public internet
IPs.

Whilst the client migration happens, I want to divert all the Register
traffic from Server A to Server B to catch any clients still left out
there.

 

Unfortunately, the original Clients were configured with static IPs
instead of DNS names for the SIP Registrar, so I have to proxy Server A
until all the clients have been updated (which might be a long time).

 

Obviously A*k itself wont do this (as far as I know).  I've looked at
siproxyd and party-sip, but with no success so far.

I've also tried using IPtables to redirect at the IP level, but the
public IP ranges seem to stop me from achieving this. It works in my
local-lan testing, but not on the public servers.

 

Any ideas?

 

Thanks,

 

Adrian

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Redirect traffic with iptables like this:

Host ~# iptables -t nat -I PREROUTING -d OLD_PUBLIC_IP -j DNAT --to
NEW_PUBLIC_IP

I'm not sure if this will work for SIP. You may need the proxy to change
info in the sip messages between server and client.

--Dave


From: asterisk-users-bounces at lists.digium.com [mailto:asterisk-users-bounces
at lists.digium.com] On Behalf Of Adrian Marsh
Sent: Wednesday, May 13, 2009 8:55 AM
To: asterisk-users at lists.digium.com
Subject: [asterisk-users] Proxying from one server to another

Hi All,

I'm trying to find a software package to do the following sip proxy work:

I've an A*k server A that needs to be decommissioned, from the USA, and
replaced by server B, in the UK. Both servers are on public internet IPs.
Whilst the client migration happens, I want to divert all the Register traffic
from Server A to Server B to catch any clients still left out there.

Unfortunately, the original Clients were configured with static IPs instead of
DNS names for the SIP Registrar, so I have to proxy Server A until all the
clients have been updated (which might be a long time).

Obviously A*k itself wont do this (as far as I know).  I've looked at
siproxyd and party-sip, but with no success so far.
I've also tried using IPtables to redirect at the IP level, but the public
IP ranges seem to stop me from achieving this. It works in my local-lan testing,
but not on the public servers.

Any ideas?

Thanks,

Adrian
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On May 13, 2009, at 5:54 AM, Adrian Marsh wrote:
> Hi All,
>
> I?m trying to find a software package to do the following sip proxy  
> work:
>
> I?ve an A*k server A that needs to be decommissioned, from the USA,  
> and replaced by server B, in the UK. Both servers are on public  
> internet IPs.
> Whilst the client migration happens, I want to divert all the  
> Register traffic from Server A to Server B to catch any clients  
> still left out there.
>
> Unfortunately, the original Clients were configured with static IPs  
> instead of DNS names for the SIP Registrar, so I have to proxy  
> Server A until all the clients have been updated (which might be a  
> long time).
>
> Obviously A*k itself wont do this (as far as I know).  I?ve looked  
> at siproxyd and party-sip, but with no success so far.
> I?ve also tried using IPtables to redirect at the IP level, but the  
> public IP ranges seem to stop me from achieving this. It works in my  
> local-lan testing, but not on the public servers.
>
> Any ideas?
>
Do your SIP clients support SIP redirects?

If so, you might want to consider configuring server A to issue 301  
redirects pointing to server B.


--
Eric Chamberlain, Founder
RF.com - http://RF.com/







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