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3

You cannot assign a port number to a domain name or statically-defined host name. A host name is translated into an IP address and port number is a separate number added to the IP address. A DNS Service record (SRV) allows you to define the location of a service including its IP address and port number, but this requires a specific application which ...


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In case you want to hide your web server's port using a VPN (openvpn) on the web server host In that case, you could configure a vpn server, e. g. openvpn, to listen on your host's ip, e. g. 192.168.1.1, port 1194 configure your web server to listen only to 192.168.1.1, port 4444 stop the port forwarding in your router which forwards traffic from the ...


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Nmap specifically chooses probes for traceroute from what it knows about the target, choosing probes that are most likely to make it all the way to the target. For this reason, its traceroute is not really useful for debugging dropped packets, but is excellent for quickly tracing the path without knowing what will reach the target. I've just put in a ...


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Your best option is to design the protocol so that the message includes some kind of source identifier. Failing that, you can use the source IP address and port to determine the client, though that will break if the client's IP address changes.


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You are misreading your netstat output. tcp 0 0 127.0.0.1:3306 0.0.0.0:* LISTEN The port is bound only for use by localhost (Interprocess communication). For a listener, "Local Address" indicates the address that is being listened on. since the only computer that can connect to 127.0.0.1 is the localhost, noone else can ...


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I'll correct your diagram see the pic below. It's useful to use the word packet in the general sense, the electronic engineering sense, without much of the mess of ISO OSI "layer" terminology. One has a packet and it has information like source IP, dest IP, And after that you have some other fields that may be called the TCP segment, and they have ...


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A TCP connection is uniquely identified by (Local Host, Local Port, Remote Host, Remote Port). (Technically the protocol is also part of the criteria, but if we restrict ourselves to TCP, it’s of course TCP.) An example connection with a router: Local Host: 192.168.2.100 (or similar) Local Port: 50000 Remote Host: 216.58.208.46 (Google) Remote Port: 80 ...


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All of the applications will use a random port for "internal use". This is known as the local port. By looking at Resmon.exe, under the Network tab, you can see a list of TCP connections. This is the open TCP connections each program has open. This will display: Image (the program that is using the TCP connection) PID (this is the Personal Identification ...


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The web server process on the Server is Listening on port 80 for connections on its own IP address. A connection is to a IP address AND a port, not just one or the other. As such you computer can connect to port 80 on 3 different IP addresses without problem. Your PC does not use port 80 on the local end of the connection. The OS will use the next free ...


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I can't find any parameter to control this behavior in the document of nmap. If you want to find which hop drops the specific packet, you may try to sue traceroute. The parameter -P is for protocol and -p is for port. Hope this helps.


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I put the router/modem in "bridged mode" instead of "routed with NAT". Fixed the problem.


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All port forwarding does is send any packets that arrive on the outside interface of your router on a specific port to a device on the inside of your router. If that device is not set up to respond to the incoming packets, then if the connection is TCP it will either issue a "connection refused" packet (the packet is actually a TCP RST packet), or ignore it ...


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You could use netstat -anutpc | grep SYN_SENT which will give you a continuous output of all apps which are trying to open a communication. You will see the app name, the remote IP and port as data of importance to you.


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Maybe you add more listened TCP ports during the configuration? SoftEther should listen for 443, 992 and 5555 by default. Take a look here and check for your config first.


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Replace your rules: -A INPUT -j REJECT --reject-with icmp-host-prohibited -A FORWARD -j REJECT --reject-with icmp-host-prohibited with -A INPUT -j DROP -A FORWARD -j DROP REJECT mostly used in local network and if your server is looking to the internet I can suggest using DROP instead. Take a look here for more iptables examples may help too.


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If you want an external machine on your LAN to access Privoxy you must do the following steps: Options -> Edit Main Configuration -> config.txt -> 4.1. listen-address -> add a listen address for the computer running Privoxy so it will be available to external machines (eg listen-address 192.168.0.1:8118) Save config.txt Restart Privoxy Set each device ...


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According to the link below you should end your rules with -j REJECT --reject-with tcp-reset instead of -A INPUT -j REJECT --reject-with icmp-host-prohibited -A FORWARD -j REJECT --reject-with icmp-host-prohibited See http://diaryproducts.net/about/operating_systems/unix/nmap_port_scanner_iptables_firewall Then the port will look like there is no ...



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