forward protocol udp 67(active)! ip helper-address 192.168.1.8 说明:dhcp来源于bootp(主机引导协议),它是主机在boot时靠udp广播来获取ip地址。使用ip forward-protocol udp bootps(bootpc)是因为dhcp的服务和客户分别用udp的67与68地址来分配和获取IP地址的。其实上述命令等同于ip forward-pro udp 67(68)。
1、全局模式下 service dhcp ip forward-protocol udp bootps 2、在需要自动获取IP的Vlan端口内指定 UDP 广播数据报的目的地址 如:ip helper-address 192.168.10.254 最后如下:...!service dhcp !ip forward-protocol udp bootps !...!interface Vlan3 ip address 192.168.17.254 255.255.25...
这些默认的前传类型,可以通过下面的命令关闭,只开启bootps UDP 67,来提高路由器的安全性 Lab_B(config)#no ip forward-protocol udp 69 Lab_B(config)#no ip forward-protocol udp 53 Lab_B(config)#no ip forward-protocol udp 37 Lab_B(config)#no ip forward-protocol udp 137 Lab_B(config)#no ip...
To avoid these duplicate packets, use the no ip forward-protocol udp bootpc and no ip forward-protocol udp bootps commands. Examples In the following example, the giaddr field in the DHCP packet will be set to the IP address of the incoming interface before forwarding to spanning-tree ...
当protocol为UDP协议时,配置高级ACL6规则。 rule[rule-id] [namerule-name] {permit|deny} {udp|17} [destination{destination-ipv6-address{prefix-length|destination-wildcard} |dest-ipv6-addr-prefix|any} |destination-port{range{port|biff|bootpc|bootps|dns|discard|dnsix|echo|mobilip-ag|mobilip-mn...
2 = protocol unreachable;协议不可达 3 = port unreachable; 端口不可达,Tracert时发送的ICMP报文即为此类。 4 = fragmentation needed and DF set;需要进行分片但设置不分片比特 5 = source route failed.源站选路失败 6 = Destination network unknown目的网络不认识 ...
Proxy is a high performance HTTP, HTTPS, HTTPS, websocket, TCP, UDP, Socks5, ss proxy server implemented by golang. It supports parent proxy,nat forward,TCP/UDP port forwarding, SSH transfer, TLS encrypted transmission, protocol conversion. you can expose a local server behind a NAT or fire...
Forward UDP broadcasts, including DHCP. Note The value of theaddressargument can be a specific DHCP server address or a network address (if other DHCP servers are on the destination network segment). Using the network address enables other servers ...
Internet Protocol(IP)和Address Resolution Protocol(ARP)存在于这一层。ARP 具有重要作用,因为它通过确定给定层三(IP)地址的层二(MAC)地址来在第二层和第三层之间进行中介。 第4 层:传输层 传输层通常作为确保数据完整性的层。TCP是在这一层最常用的协议,它是一个有状态的协议,通过与远程主机保持连接,可以...
net.ipv4.ip_forward = 1 net.bridge.bridge-nf-call-ip6tables = 1 EOF # 加载内核 sysctl --system # 创建Containerd的配置文件 mkdir -p /etc/containerd containerd config default | tee /etc/containerd/config.toml # 修改Containerd的配置文件 sed -i "s#SystemdCgroup\ \=\ false#SystemdCgroup\ ...