Network routing issue

Question

Here is the situation. I've turned server ns1 (a dual-homed linux box) into a router by enabling ip_forwarding on it (echo 1 > /proc/sys/net/ipv4/ip_forward)

Server ns1:

eth0: 10.10.0.200/24 (default gw: 10.10.0.51)

eth1: 192.168.53.198/24 (I've not set any default gw for this interface)

Routing table on server ns1:

[root@ns1 ~]# netstat -nr
Kernel IP routing table
Destination     Gateway         Genmask         Flags   MSS Window  irtt Iface
192.168.53.0    0.0.0.0         255.255.255.0   U         0 0          0 eth1
10.10.0.0       0.0.0.0         255.255.255.0   U         0 0          0 eth0
169.254.0.0     0.0.0.0         255.255.0.0     U         0 0          0 eth1
0.0.0.0         10.10.0.51      0.0.0.0         UG        0 0          0 eth0

I'm trying to ping a webserver (having an ip of 10.10.0.54) from a workstation BUT NOT SUCCEEDING.

Workstation:

The properties of workstation are:

eth0: 192.168.53.150/24

default gateway: 192.168.53.198

Here is the routing table on my workstation:

root@workpc:~# netstat -nr
Kernel IP routing table
Destination     Gateway         Genmask         Flags   MSS Window  irtt Iface
192.168.53.0    0.0.0.0         255.255.255.0   U         0 0          0 eth0
0.0.0.0         192.168.53.198  0.0.0.0         UG        0 0          0 eth0

Why is my workstation not able to reach 10.10.0.54? I believe I've setup everything correctly.