用shell实现telnet主机端口？？

waker

如果有nmap

nmap 另外一台主机 -p1234

freecoder

telnet IP Port 就可以知道端口开没开啊

cyaln

netstat -an | grep LISTEN | grep 192.168.0.1：25

twf_cc

nc -vv -z remote_host port
ex
[victor@localhost ~]$ nc -vv -z 137.189.91.191 21
Connection to 137.189.91.191 21 port [tcp/ftp] succeeded!
[victor@localhost ~]$

[ 本帖最后由 twf_cc 于 2006-10-16 23:03 编辑 ]

vantien

原帖由 twf_cc 于 2006-10-16 22:18 发表
nc -vv -z remote_host port
ex
[victor@localhost ~]$ nc -vv -z 137.189.91.191 21
Connection to 137.189.91.191 21 port [tcp/ftp] succeeded!
[victor@localhost ~]$

这招好用哦
速度又快
学起来 ^^

[ 本帖最后由 vantien 于 2006-10-16 23:13 编辑 ]

skw

你可以用“telnet <对端主机IP> 1234”来测试呀

feixiang2966

telnet xxx.xxx.xxx.xxx 1234

twf_cc

原帖由 vantien 于 2006-10-16 23:11 发表


这招好用哦
速度又快
学起来 ^^

見笑,
大量的 port scrn , nc 相當不錯
如
[victor@localhost ~]$ nc -vv -z 137.189.91.191 11-30
nc: connect to 137.189.91.191 port 11 (tcp) failed: Connection refused
nc: connect to 137.189.91.191 port 12 (tcp) failed: Connection refused
nc: connect to 137.189.91.191 port 13 (tcp) failed: Connection refused
nc: connect to 137.189.91.191 port 14 (tcp) failed: Connection refused
nc: connect to 137.189.91.191 port 15 (tcp) failed: Connection refused
nc: connect to 137.189.91.191 port 16 (tcp) failed: Connection refused
nc: connect to 137.189.91.191 port 17 (tcp) failed: Connection refused
nc: connect to 137.189.91.191 port 18 (tcp) failed: Connection refused
nc: connect to 137.189.91.191 port 19 (tcp) failed: Connection refused
nc: connect to 137.189.91.191 port 20 (tcp) failed: Connection refused
Connection to 137.189.91.191 21 port [tcp/ftp] succeeded!
nc: connect to 137.189.91.191 port 22 (tcp) failed: Connection refused
nc: connect to 137.189.91.191 port 23 (tcp) failed: Connection refused
nc: connect to 137.189.91.191 port 24 (tcp) failed: Connection refused
nc: connect to 137.189.91.191 port 25 (tcp) failed: Connection refused
nc: connect to 137.189.91.191 port 26 (tcp) failed: Connection refused
nc: connect to 137.189.91.191 port 27 (tcp) failed: Connection refused
nc: connect to 137.189.91.191 port 28 (tcp) failed: Connection refused
nc: connect to 137.189.91.191 port 29 (tcp) failed: Connection refused
nc: connect to 137.189.91.191 port 30 (tcp) failed: Connection refused
[victor@localhost ~]$

langue

原帖由 twf_cc 于 2006-10-22 18:15 发表


見笑,
大量的 port scrn , nc 相當不錯
如
[victor@localhost ~]$ nc -vv -z 137.189.91.191 11-30
nc: connect to 137.189.91.191 port 11 (tcp) failed: Connection refused
nc: connect to 137.18 ...

这个是端口扫描……

少林功夫好

回复 14# twf_cc


    确实很简单啊。此方法收下了。谢谢。
另外我猜楼主的意思应该是，telnet命令如何在shell脚本里判断端口是否能连通。