I need some advice.

I'm new to this, so i was doing some tcpdump experiments, and i came across something like this,

11:25:09.753455 IP {My linux box IP.}.jamlink > 122.221.45.236.23433: Flags [.], ack 6745, win 85, options [nop,nop,sack 1 {6744:6745}], length 0

I want to clarify few areas,

1. what is .jamlink
2. what is this unknown IP that appears with a port 122.221.45.236.23433 when i call my couchbase using ip and port

My testing scenario - I've hosted couchbase server on my linux box, and i'm trying to access it through at normal windows machine that has a different IP.