FTP Data
TFTP
FTP Control
HTTP
SSH
DHCP Server
Telnet
POP
DNS
IMAP
SMTP
DHCP Client
HTTPS
143
53
443
80
110
67
20
21
22
69
25
68
23
NETBIOS
LDAP
DHCP SERVER
SMTP
DHCP CLIENT
POP
FTP Data
HTTP
DNS
IMAP
HTTPS
Telnet
SMTP
SSH
80
22
20
53
67
68
110
143
389
25
443
139 138 137
23
25
Ride-hailing
Uber
Mobility
Safety
China
Expansion
Data
Didi Chuxing
Valuable resource
Competitor
On-demand transportation
Country of origin
Transportation options
Company name
Priority for didi
Global growth
