# pystun3 > Classic STUN client written in Python. > More information: . - Make a STUN request: `pystun3` - Make a STUN request and specify the stun server: `pystun3 --stun-host {{stun.1und1.de}}` - Make a STUN request and specify the source port: `pystun3 --source-port {{7932}}`