Thanks for your clarification.

For running full node, what are the steps i need to follow and Is there any 
reliable full node is available in the internet so that i can open my 
firewall to that fullnode and can connect. If i need to run as full node, 
what configuration(S/W and H/W) i should have.

The another thing i wanted to check is that Is the SPV node capable of 
propagate to other nodes. So that i can use the below approach.

The Machine(Within Firewall) -> SPV Node(Outside the firewall and connected 
with bitcoin network).

Thanks,
Ramesh A

On Friday, April 21, 2017 at 1:53:46 PM UTC+5:30, Andreas Schildbach wrote:
>
> Since Bitcoin is decentralized, peers can come and go without notice. 
> The DNS queries are purposefully designed to return a different set of 
> peers for each query. So yes this also applies to Mainnet. 
>
> The Bitcoin P2P network cannot work unless you allow full access to port 
> 8333 (port 18333 for testnet). 
>
> To work around that limitation, we suggest you to run your own full node 
> and connect to it exclusively (using the Peer API). However, that full 
> node would need to sit outside your fireware or otherwise it could not 
> connect to the P2P network either. 
>
>
> On 04/21/2017 05:19 AM, Ramez Az wrote: 
> > Hi, 
> > 
> > I am developing small client application for posting the txns and 
> > receiving the txns. I have firewall in my network and i am able to allow 
> > only some Peers to connect in the network. The list of peers(IP 
> > addresses) are getting changed every DNS lookup at 
> > testnet-seed.bitcoin.petertodd.org domain. Can you please provide some 
> > list of Peers through which we should be able to do connect at any time. 
> > Is there any other domain where we can get some consistent Peers or any 
> > alternatives?. If you provide some of consistent peers, i can open my 
> > firewall for those nodes. 
> > 
> > I am facing this issue in Testnet, Is this the same case for mainnet as 
> > well or can we get consistent Peers in MainNet. 
> > 
> > As this is bit urgent, Can any one clarify as soon as possible. 
> > 
> > Thanks in Advance. 
> > 
> > Thanks, 
> > Ramesh A 
> > 
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