Hello all,
my doubt is related with replication in Postgres using Slony-I. I
read the manuals and understood that the postgres slave (client)
should listen all modifications in the postgres master (server) side,
to implement the replication. Is that correct?

I have problems with network security ports, so I need to know how
can I do the postgres master write modifications in the slave side,
but the slave should not "ask something" to the master. Someone could
guide me???

Thanks in advance!

Eduardo.