Not shown: 1994 closed ports PORT STATE SERVICE 22/tcp open ssh 25/tcp open smtp 80/tcp open http 199/tcp open smux 123/udp open ntp 161/udp open snmp Device type: general purpose Running: Linux 3.X OS CPE: cpe:/o:linux:linux_kernel:3 OS details: Linux 3.7 - 3.9 Network Distance...
int open_port(int fd,int comport) { char *dev[]={"/dev/ttyUSB0","/dev/ttyS1","/dev/ttyS2"}; if (comport==1)//串口1 { fd = open( "/dev/ttyUSB0", O_RDWR|O_NOCTTY|O_NDELAY); if (-1 == fd) { perror("Can't Open Serial Port"); return(-1); } } else if(comp...
selinux was enabledyou need to add the port 587 to http_port_tsemanage port -m -t http_port_t -p tcp 587 # so that haproxy can bind to port 587also need to open port 587 in firewallfirewall-cmd --perm Oracle 开端口 原创 ...
一、firewall 方式 (centOS7.*) 查看防火墙状态 firewall-cmd --state 如果返回的是 “not running”,那么需要先开启防火墙; 开启防火墙 systemctl start firewalld.service 再次查看防火墙状态,发现已开启! 开启指定端口 firewall-cmd --zone=public --add-port=3306/tcp --permanent 显示success 表示成功 –zo...
PORT STATE SERVICE 22/tcp open ssh 25/tcp open smtp 80/tcp open http 199/tcp open smux 123/udp open ntp 161/udp open snmp Device type: general purpose Running: Linux 3.X OS CPE: cpe:/o:linux:linux_kernel:3 OS details: Linux 3.7 - 3.9 ...
5729/tcp openmail Openmail User Agent Layer 5741/tcp ida-discover1 IDA Discover Port 1 5742/tcp ida-discover2 IDA Discover Port 2 5745/tcp fcopy-server fcopy-server 5746/tcp fcopys-server fcopys-server 5755/tcp openmailg OpenMail Desk Gateway server 5757/tcp x500ms OpenMail ...
104 int open_port(char *com) 第104~120行:打开设备节点 第113行: 1.fcntl (fd,FSETFL,FNDELAY);读数据时不等待,没有数据就返回0 2.fcntl (fd, F_SETFL,0);读数据时,没有数据阻塞 12 int set_opt(int fd,int nSpeed, int nBits, char nEvent, int nStop) ...
This article explains how to open a network port in Linux. 2. What Is a Network Port? Fundamentally, every host machine can run several applications within the system. If an application has to communicate with other devices, it uses the network interface with the host-associated IP address. ...
关闭串口设备...*入口参数: 串口号 *返 回值: 成功返回文件描述符,失败返回负值 *作 者: *修改时间: ***/ int open_port...terminal device"); } return fd; } /*** *name : set_port *功能描述: 设置串口参数 13.1K20 Linux 内核参数 (看着linux源码在centos7.4系统上测试,纠结了好久。。)......
PORT STATE SERVICE 22/tcp open ssh Nmap done: 1 IP address (1 host up) scanned in 13.06 seconds 假如端口没有开启,你将得到类似下面的结果: # nmap 192.168.1.8 -p 80 Starting Nmap 7.70 ( https://nmap.org ) at 2019-03-16 04:30 IST ...