telnet: Unable to connect to remote host: Cannot assign requested address
telnet报错,无论telnet什么域名或者IP的端口:
telnet: Unable to connect to remote host: Cannot assign requested address
- root@debian:~# telnet xxx.com 21
- Trying xxx.com...
- telnet: Unable to connect to remote host: Cannot assign requested address
- 添加local_port_range
- echo "net.ipv4.ip_local_port_range = 1024 65000" >> /etc/sysctl.conf
- sysctl -p
- root@debian:~# telnet xxx.com 21
- Trying x.x.x.x...
- Connected to xxx.com.
- Escape character is '^]'.
- 220 Microsoft FTP Service