I have remote server with Ubuntu Linux and I want to establish SSH tunnel with this server from Windows machine using PuTTY(plink). I have to use this method for getting access to some service on this server, because firewall is blocking all ports on this server except 22 ssh port. But speed of connection over SSH tunnel is VERY SLOW. I have checked speed using iperf tool.
Here is results of using iperf without SSH tunnel:
[ 5] local <remote_server_ip> port 5001 connected with <my_internet_ip> port 11154 [ ID] Interval Transfer Bandwidth [ 5] 0.0-10.4 sec 5.12 MBytes 4.13 Mbits/sec
And it is results of using iperf over SSH tunnel:
[ 4] local 127.0.0.1 port 5001 connected with 127.0.0.1 port 38231 [ ID] Interval Transfer Bandwidth [ 4] 0.0-15.2 sec 896 KBytes 484 Kbits/sec
Speed is really different. How is it possible? What should I do to fix it?