$ nmap  -p0-65535 192.168.31.1 -T5
Starting Nmap 7.70 ( https://nmap.org ) at 2018-09-21 11:25 +07
Strange read error from 192.168.31.1 (49 - 'Can't assign requested address')
Nmap scan report for XiaoQiang (192.168.31.1)
Host is up (0.0064s latency).
Not shown: 65511 closed ports
PORT     STATE    SERVICE
0/tcp    filtered unknown
53/tcp   open     domain
80/tcp   open     http
784/tcp  open     unknown
5081/tcp open     sdl-ets
5351/tcp open     nat-pmp
8080/tcp open     http-proxy
8098/tcp open     unknown
8190/tcp open     gcp-rphy
8191/tcp open     limnerpressure
8192/tcp open     sophos
8193/tcp open     sophos
8195/tcp open     blp2
8196/tcp open     unknown
8197/tcp open     unknown
8198/tcp open     unknown
8380/tcp open     cruise-update
8381/tcp open     unknown
8382/tcp open     unknown
8383/tcp open     m2mservices
8384/tcp open     marathontp
8385/tcp open     unknown
8443/tcp open     https-alt
8899/tcp open     ospf-lite
8999/tcp open     bctp