telnet: connect to address 192.168.26.83: Connection refused 使用方式 ┌──[root@vms152.liruilongs.github.io]-[~/soft] └─$shnetwork_test.sh"timeout -s 9 4 ping -c 5"┌──[root@vms152.liruilongs.github.io]-[~/soft] └─$shnetwork_test.sh"echo quit | timeout --s9 5 telnet...
Port: Twisted Pair PHYAD Advertisement: ASIC=3, Technology=Cu, LCK=ON, LED=ON, Transmitter=Generic, TestMode=Off, Power=On, MDI=Normal, PME=Off, Link=Yes, AutoNegotiate=On, AutoNegComplete=Yes, RxErrors=0, TxErrors=0, AlignmentErrors=0, PeerErrors=0, BadPktsSent=0, BadCRCs=0, Fracti...
linux查看服务器开放的端口和启用的端口五种方式 Nmap是Network Mapper的简称。Nmap是一款免费、开源的网络发现和侦察工具。Nmap可以扫描网络中的处于活动状态的主机、开放端口、操作系统版本和服务检测以及执行隐匿方式的信息扫描。安装方式如下: 代码语言:javascript 代码运行次数:0 #yum安装 yum-y install nmap #rpm包...
Connection closed by foreign host. 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 18. 19. 20. 21. 根据输出的结果,我们就能够知道这个通信协议(Port Number提供的通信协议功能)是否已经成功地启动了。而每个port所监听的服务都有其特殊的命令,例如,上述的port 25就是本...
Before getting into the theory of network layers, take a look at the simple network shown in Figure 9-1. 在了解网络层理论之前,请先看一下图 9-1 所示的简单网络。 Figure 9-1. A typical local area network with a router that provides Internet access Figure 9-1. A typical local area netwo...
静态NAT,即内网 IP 与公网 IP 是一对一的永久映射关系;动态 NAT,即内网 IP 从公网 IP 池中,动态选择一个进行映射;网络地址端口转换 NAPT(Network Address and Port Translation),即把内网 IP 映射到公网 IP 的不同端口上,让多个内网 IP 可以共享同一个公网 IP 地址。 iptables:Linux 内核提供的 Netfilter ...
connection resets received 8 connections established 68401617 segments received 67268650 segments sent out 330444 segments retransmitted 2734 bad segments received 5638980 resets sent InCsumErrors: 2721 Udp: 4351700 packets received 450350 packets to unknown port received 145 packet receive errors 4374307 ...
[root@localhost~]# lspci | grep Ethernet 02:00.0 Ethernet controller: Intel Corporation 82599ES 10-Gigabit SFI/SFP+ Network Connection (rev 01) 02:00.1 Ethernet controller: Intel Corporation 82599ES 10-Gigabit SFI/SFP+ Network Connection (rev 01) ...
device - show and manage network interfaces connection - start, stop, and manage network connections 如何修改IP地址等属性: #nmcli connection modify IFACE [+|-]setting.property value setting.property: ipv4.addresses ipv4.gateway ipv4.dns1 ipv4.method manual ...
Advertised pause frame use: Symmetric Advertised auto-negotiation: Yes Advertised FEC modes: Not reported Speed: 100000Mb/s Duplex: Full Port: FIBRE PHYAD: 0 Transceiver: internal Auto-negotiation: on Supports Wake-on: d Wake-on: d Current message level: 0x00000004 (4) link Link detected: ...