本文共 2263 字，大约阅读时间需要 7 分钟。
?????????????????????????????????????????nc???????????????????????????????????????
?????????????????shell???????????????????
?????????????????????????????????????????????192.168.1.2??22?????????????????
nc -zv 192.168.1.2 22
?????
-z: ??TCP??-v: ??verbose??????192.168.1.2 22: ???????????????????????
Connected???????Refused???????????????????????????????shell????????????????????????????????
server-list.txt???????????IP??port-list.txt????????????#!/bin/sh# ???????server_list=$(more server-list.txt)# ??????????port_list=$(more port-list.txt)# ?????????????nc??for server in $server_listdo for port in $port_list do echo -en "\033[1mChecking port $port on $server\033[0m" nc -zv $server $port echo -en "\033[0m" if [ $? -ne 0 ]; then echo "Port $port on $server is closed." fi donedone
#!/bin/sh???????/bin/sh??? interpreter?server_list=$(more server-list.txt)??????????IP???port_list=$(more port-list.txt)?????????????for server in $server_list?????????for port in $port_list????????nc -zv $server $port???nc?????????????if [ $? -ne 0 ]?????????????????????echo??????port_scan.sh?chmod +x port_scan.sh
sh port_scan.sh
?????????
server-list.txt?192.168.1.2192.168.1.3192.168.1.4
port-list.txt?2280
????????
Checking port 22 on 192.168.1.2Connected to 192.168.1.2 on port 22Connection to 192.168.1.2 22 closedChecking port 80 on 192.168.1.2Connected to 192.168.1.2 on port 80Connection to 192.168.1.2 80 closedChecking port 22 on 192.168.1.3Connected to 192.168.1.3 on port 22Connection to 192.168.1.3 22 closedChecking port 80 on 192.168.1.3Connected to 192.168.1.3 on port 80Connection to 192.168.1.3 80 closedChecking port 22 on 192.168.1.4Connected to 192.168.1.4 on port 22Connection to 192.168.1.4 22 closedChecking port 80 on 192.168.1.4Connected to 192.168.1.4 on port 80Connection to 192.168.1.4 80 closed
?????????????80?443?????port-list.txt??????????????
port-list.txt?80443
???????????????80?443??????
nc?netcat?????????????????
?????????????? -zv??????????????
?????????shell?????????????????????????????????????????????????????
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