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  • Why does DHCP uses UDP port 67 and 68 for the . . . - Super User
    DHCP is based on the earlier BOOTP protocol which uses well known port numbers for both server and client instead of an ephemeral port The server and the client communicate via broadcast and the server broadcasts the offered IP address to the client on UDP port 68
  • Configure Windows Firewall to allow DHCP client and . . . - Super User
    There is an option to overrule that, but it is not available for outbound rules Hence, to allow DHCP client broadcasts, you will have to exclude them from the rule suggested in this answer, assuming this firewall rule is indeed responsible for breaking your DHCP setup DHCP clients use the remote UDP port 67 for IPv4 and 547 for IPv6
  • networking - Port forwarding on ZTE router - Super User
    Use the manual Port forwarding for ZTE H298A Basically this option is found in Internet > Security > Port Forwarding > Create New Item Fill in the fields of Protocol type, WAN port and LAN Host port, then click Apply
  • How to find my DHCP server IP address via a command prompt . . . - Super User
    It's possible that they're both right Likely the DHCP server that ipconfig all reported was the the default gateway for your network and was a DHCP relay As such, it would listen for DHCP request broadcasts and relay them to the configured DHCP server, which could reasonably have been the domain controller –
  • Why does DHCP work even when udp 67 is blocked?
    Many DHCP (IPv4) clients and servers use "raw" sockets, which bypass the IP-level firewall On the client side, when a DHCP (IPv4) client starts up, it usually has no IP address at all Therefore it cannot use ordinary UDP sockets and must use "raw" sockets instead, where it crafts its own UDP and even IP headers
  • Can I chain two routers together keeping DHCP on both?
    Connect a cable from one of the LAN ports on router A to the WAN port on router B Set Router B's WAN IP address to 192 168 1 51, and its internal LAN IP to 192 168 2 1 Tell it to hand out DHCP addresses on something like 192 168 2 2 through 192 168 2 50 Set the DNS settings on this router's DHCP to what you want for your kids
  • How to enable the lan4 on zte F670L for internet usage?
    Just go to the Network, then click on port binding, uncheck the LAN4 and hit save Note: By checking the manual, the default password for superadmin access are the following username: admin password: Converge@zte123
  • Why do DHCP clients leave the port open after the lease now?
    "Closing" a port is equivalent of terminating (or killing) the associated service Furthermore, at OS level, any port can be associated to maximum one service at any given time (the port number effectively indicates to the OS to which service it needs to forward a given packet) Keeping port 68 open means keeping it "reserved" for DHCP
  • Can I configure my Windows 10 PC as a DHCP server on a local switch?
    It is possible to install and run third-party DHCP server software on Windows, and there are several free and commercial DHCP server apps available if you search Alternatively, the PC could run a virtual machine which provides DHCP services, e g regular Linux BSD (or indeed even Windows Server) or specialized pfSense RouterOS etc
  • networking - Can port forwarding setting of router be effective if dhcp . . .
    No Even if your router was forwarding port 21 alright, unfortunately it is not enough to forward just one port for FTP protocol to actually work This is in big contrast with many other protocols like HTTP or SSH which need only one TCP port forwarded (80 or 22)





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