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7

…and the previous IT personnel did not leave any information. I feel your pain on this. Inheriting someone else’s unmapped and undocumented network mess is not pleasant. As explained in this answer you could use nmap like this; of course 192.168.0.1/24 is an example and should be changed to the network range assigned to the system by the ISP: nmap -sP ...


5

TCP and HTTP are different things. TCP is the transport layer. By definition, it's responsible for carrying application layer protocols (HTTP in your case) over it. TCP does not run over a port. It is the arbitrator of ports. In other words, when you connect to an HTTP server, you connect on TCP port 80. When you connect to HTTPS, you're connecting ...


5

If I understand your question correctly, I might rephrase it as, "If the network infrastructure allows HTTP traffic to pass on a certain port, will it also allow pure TCP (without full HTTP-compliant operation or even fake HTTP headers) to pass on that port?" Unfortunately, the answer is, "It depends on details you have not yet discovered regarding how the ...


4

It depends on what you're using the cable for. If you're using it for any flavor of Ethernet (10/100/1000BASE-T), then Yes, it makes a difference for signal integrity. Ethernet uses differential signaling, where a signal waveform is sent down one wire of each pair, and the inverse of that signal is sent down the other wire of that pair. Because the two ...


3

Private MAC addresses are often found in embedded systems that do not have an official address. Many cheap "credit card computers" such as the Raspberry Pi must generate their own address to operate without an official, manufacturer-assigned address. For you interest: Private MAC addresses can be identified by having the second-least-significant bit of the ...


2

In addition to using nmap and other active scanning tools you should also look at your mac address tables on your firealls, routers, and switches. These devices will keep a list of the MAC addresses and IP addresses of all devices that have communicated with in a defined time period. Often this time period can be increased for more detailed results.


2

I wrote a proper ip4 command out of similar frustration. ip4 (.exe is here)


2

Thinking laterally, try a WiFi range extending power line adaptor. Test different plug sockets with your existing powerline adapter to see where the edge of current capability is. Use a wifi extending powerline adaptor and enjoy wireless access all over. Examples: From TP Link; just use filter for wifi versions only. From Netgear: Don't know ...


2

There's no way to prevent a computer from using a different IP address. You can however, assign a specific IP address to a computer via DHCP based on the MAC address so when that computer requests an IP from the DHCP server they get that same one every time. I will give you some possibilities below, but keep in mind that it would not prevent someone from ...


2

The accepted answer is not quite correct. Actually you may be able to connect all 3 it if the router with the wifi has an ethernet WAN port not just and ADSL port. Many do now have that because a lot of high-speed broadband is now presented via a residential gateway or pure ADSL modem. My Billion 7800N does for example. In that case, you would connect the ...


2

No. your global Ip will keep on changing until you will ask/buy a static ip for your connection. Dont know about your area, but that is very easily possible by paying very nominal amount.


1

A few comments: I would not use WiFi to connect your router to the computer. You want 2 Wired Ethernet ports for your laptop: get an extra USB Network card, and use that to connect to your Router's Wan port. Then configure the router as normal. - it may be easier to find other workarounds to this problem. Are you sure it's caused by an intentional ...


1

Not enough reputation to comment (sigh) I too was facing similar problems as you've described and got it to work by following the same steps you've described but by not defining anything in the Source text input.


1

The gateway should be the host interfaces private IP address. In this case, the host is acting as a router. If you view the VirtualBox log for the VM on the host, you should be able to search for that address and see that it is assigned by a virtual DHCP service. NAT: DHCP offered IP address 10.0.2.15 The above is an example from my own PC running Linux ...


1

General topology discovery may be done via Address Resolution Protocol (ARP, IPv4) or Neighbor Discovery Protocol (NDP, IPv6). You may be familiar with broadcast addresses in a TCP/IP subnet, by convention the last available address in your subnet. For example in 192.168.1.0/24, the broadcast address is by convention (but not always by configuration) ...


1

The best way I can think of to do this would be to set up a VPN client on the system at the remote site, and a VPN server on the network at your home office. Then if you have to switch to the backup server at the remote site, start the VPN client, and make sure the VPN server is configured to let you use the address you want. This would effectively extend ...


1

You cannot do that. It will only work if you have 3 ADSL ports. http://www.ehow.com/facts_6292275_dsl-vs_-ethernet.html


1

With the appropriate hardware, this is quite easy to do. A managed switch will allow you to assign one or more IPs to a (physical) port, and will block traffic coming from any other IP on that port. You can also use a different network interface per computer on your server, though that may prove quickly more costly. Lacking such hardware, the best you can ...


1

You can get a dual WAN router like the edimax br-6624, setup 2 WAN connections and balance load between them. However, you will have to be very careful when configuring so you won't get login anomalies or other such things due to connection switching.


1

On Windows you can use ipconfig /all to find the DUID & IAID: Ethernet adapter VirtualBox Host-Only Network: Connection-specific DNS Suffix . : Description . . . . . . . . . . . : VirtualBox Host-Only Ethernet Adapter Physical Address. . . . . . . . . : XX-XX-XX-XX-XX-XX DHCP Enabled. . . . . . . . . . . : No Autoconfiguration Enabled . ...


1

what I obtain from running: tcpdump udp dst port 5201 -qUns 0 -i wlan0 -w file.pcap are only ip fragmented frames. That's probably because whatever traffic is going to port 5201 consists of UDP packets that are larger than what would fit in a single link-layer packet, so IP has to fragment them. That filter, unfortunately, will only capture the ...


1

You should run: redir --laddr=127.0.0.1 --lport=8000 --cport=8080 --caddr=whatever... all params should be with -- prefix and not - :-)


1

It depends on your setup how this functions, but you can have several LAN ports active next to each other, and if all 3 have an internet connection with each different IP addresses, and you bridge that into a new connection, this will work. Do note that if one of the connections has a failing internet connection, it will become harder to diagnose problems, ...


1

As it turns out, all we needed to do was add the certificate manually to Firefox's certificate store as an exception. The weird part is just that it didn't ask to do that, but instead behaved like it could not connect. Usually it should show the "get me out of here" page.


1

The 3rd command is trying to add a route with specific settings. The route already exists. Given that, the obvious option would be to change the existing route to use the same specific settings. Use netsh interface ipv6 set route ... publish=yes to do so.


1

Briefly speaking, a scoped DNS query can use only specified network interfaces (e.g. Ethernet or WiFi), while non-scoped can use any available interface. More verbosely, an application that wants to resolve a name, sends a request (either scoped or non-scoped) to a resolver (usually a DNS client application), if the resolver does not have the answer cached, ...


1

Before you run the netsh command, run wpeinit. Example: X:\windows\system\wpeinit X:\windows\system\netsh interface ip set address name="Local Area Connection" static 192.168.1.19 255.255.255.0 192.168.1.254 This assumes your mask is /24 and default gateway is .254, change as necessary.


1

Using 3g (and other wireless internets) will rise the ping. Whether you are using HTTP/1.1 or HTTP/2 . Try to test it with cable internet .


1

The least significant bit of the first octet is reserved as the "group bit" (multicast/broadcast flag bit). MAC addresses with that bit set are not valid unicast addresses, thus are not valid to use as the MAC address of a NIC. So in the nibble where you have a 0x8, these (even) values are legal: 0x0 0x2 0x4 0x6 0x8 0xa 0xc 0xe And these (odd) values are ...


1

Apparently there was a Windows Update in the queue that did something about this. After a restart, this problem disappeared entirely.



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