Port is open, but transmission says it's closed

Installing and Using OpenWrt
2

This is my readout, still port is closed for me.

root@WRT1900v2:~# iptables -L | grep 51400
           tcp  --  anywhere             anywhere             tcp dpt:51400
ACCEPT     tcp  --  anywhere             anywhere             tcp dpt:51400 /* !fw3: transmission */
ACCEPT     udp  --  anywhere             anywhere             udp dpt:51400 /* !fw3: transmission */
root@WRT1900v2:~# transmission-remote -pt
Port is open: No
root@WRT1900v2:~#