All Questions

Hello guys, If one PC on the picture shown sends broadcast message, does the distribution switch forwarding the broadcast message? Thank you

I wanted to have a little advice, I want to configure a DMZ, and I wanted to know if you could advice me some devices from HP and Cisco please ? Thanks in advance !

I have two Juniper routers (a CRX340 and a CRX320), each with a leased line, on the same IP range. They are designed to be connected together on specific network ports so that the CRX320 takes over if ...

According to rfc4861, the destination address of a RA message is either the all-nodes multicast address or source address of the received RS message. I captured one ICMPv6 message sent by my ISP, ...

I have a 4 routers that connected each other via an multilayer switch. Is it possible to remove/block an EIGRP neighbors via Switch? For example, I have a topology like this : I wanted to remove ...

Hi the Stack Community ! I have some problems with creating a NAT rule with that Cisco device, (of course you already undestand that I m a beginner with Cisco devices ^^) The configuration schema ...

When I am doing a SNMP walk on the OID bellow. I get the correct IP SLA configuration, but I will get a set of random digits trailing which can be seen in the row bellow. What is the meaning of ...

I work with many network connected embedded devices that I have complete control over, and moreover have realtime (boot up -> responding on network) responsibilities. Often times they don't need to ...

When I analyze the router solicitation(RS) messages, then they contain the MAC address of the sending host. How does the router use this MAC address seen in ICMPv6 message? Does it simply use it as a ...

As far as I know, UDP ports and OS sockets are mapped only by the (local port, local address) pair. In other words, the receiver side's OS does not keep a state of (remote port, remote address) pair (...

I don't have much knowledge about networking or networking devices. I hope I am not asking something too stupid. Recently I am facing a problem. My router circuit fried due to lightning storm. But I ...

I have a WatchGuard firewall as our firewall/router, windows server 2008 R2 standard for DHCP, 2 windows 10 machines and a Hikvision DVR. Machine 1 could see the cameras no problem for about a week ...

I'm fairly new to Fiber cabling. I have a OM1 cable (running 750 metres) already installed on a site that currently works fine on a old system that is being upgraded. I'm trying to find out if these ...

The following just happened to me: While i was browsing a site on my pc i used my phone to google for something. Instead of showing the search results i was redirected to the same page that was open ...

I can't understand the concept of PW (pseudowire). Does making a pseudowire mean that we are making a dedicate path with reserved resources for a service with defined requirements? so What are its ...

My network interface actively uses a gateway to send IP packets to other networks. There is already an ARP entry in the cache for the IP/MAC association for the gateway. Is it normal that my network ...

Could someone explain me in understanding the ports used by DHCP. I know that in order to assign a dynamic IP the DHCP server would talk to the client over the dest port 67. 1.Other than this ...

Before I ask my initial question, I'll explain the setup and background. I am helping a business fix their internet after a camper reported that the internet had gone out. I went to check, and sure ...

im building my company VPN with algo vpn hosted in Google Compute Engine to connect two applications, I need it to connect betwen clients with same user. Example: "User A" -can conmunicate with- "...

When I look at the protocol, I see that DHCP Request and Acknowledgement are both broadcast in the link layer. However at that point, both sides actually know each other's MAC addresses. Why do they ...

Don't think it's a duplicate. I've searched really many articles and couldn't find the satisfying answer. I understand : how ARP works MAC address is an unique address for each NIC IP is network ...

I have bought a ASIC Mining device (Insillicon Z9) which I would like to install in the basement of my apartment building. Basement is ground floor and I live on the 7th floor. There is no internet ...

I created a basic wireless system between two microcontrollers. Each uses the on-chip UART and an HM-TRP radio module to communicate with each other. Eventually I'll have a master-slave setup where ...

I have 4 Simple Wireless ADSL Modem that 4MB, 8MB, 16MB, 40MB Internet BW. I have one HP Server with 4 Network Ethernet Ports. I have 7 LAN based PC's, 2 Network Printer and some wireless station ...

To establish a wireless link 1.4 km away, without obstacles, which is the best equipment? 1 - Tp Link Cpe210 / 2.4Ghz / 9dbi / 300mbps or 2 - Intelbras Wom 5000i / 5Ghz / 12dbi / 150mbps

I am working on a project where we are using a GSM modem with built in GPS system. The modem has setting to send GPS signal NMEA format to a remote TCP server. Can someone consult on where should i ...

How to represent in a block diagram all the devices used in the connection of two LANs that implement IP and dispose of a 2 Mbps link, in a SDH-STM 4 hierarchy?

I'm new to networking in general, and have only a vague understanding of network topologies. Looking at the RIPE Atlas info video, it would seem that any user can install a probe and that then gets ...

I have two RJ45 ports and one Ethernet MAC can i interface them without using the switch. it has to be used in my final year engineering project

I'm really sorry if this question seems stupid. mynoiphostname.ddns.net is linked to my public ip xxx.xxx.xxx.xxx. On this network, I have a computer whose local IP is 192.168.1.2. How can I connect ...

I have the following setup in my network Host ---- Squid(1) ---- Squid(2) ---- Internet the first proxy forwards all the traffic to the second one, the problem is that the second proxy won't ...

I have 3 L3 switches. They're connected to each other with a trunk (in which I need to define the allowed VLAN's). On SW1 I have for example vlan 100. On SW3 I also have vlan 100, but it's another ...

Which option is better? Connect your WAN directly to Switch , and then to router Connect your WAN directly to Router, and then to switch If you connect WAN to your Switch, you will be able to use ...

I've two cisco ASA configured in active/active HA. ASA is connected to switch with port-channel. Switch configuration: interface Port-channel47 description ASA2 switchport mode trunk switchport ...

Do the private WAN architectures (MPLS, VPLS, MetroEthernet, etc) for sites interconnections, require a firewall ? (often saw online architectures examples, best practices, etc, without firewall...)

Setting up NTP on a cisco 3560 so clients can be all on the same time. The switch it only used at layer 2. Outside of having a management VLAN for SSH, there isn't currently any config for anything ...

We have an in-house application for sending large files. Using TCP/IP this application uploads the files to a server on our main office network and then sends a link to the file as part of an email. ...

I'm looking for ways, methods or workarounds to: Change firewall rules (WAN/LAN accept-deny) of a Router from networking, through Linux command or PHP script, can be a socket, or rest service, soap ...

I was recently told that a Firewall configuration for the WatchGuard device does not allow the user to login and alter the configurations. Instead, you send an encrypted image file containing the ...

I've sent this very question to Sophos Support but I feel that asking here might increase my chances to get an answer. The short question is: what could be the reason for my Sophos UTM VM WAN ...

The question is as the title describes, what I am trying to do is: create a tun device, read the IP packet from the device; change the dst_addr, dst_port, src_addr, src_port and the port in its ...

I had an issues about EIGRP. But first, here's the topology : I've done EIGRP Routing, but it's kinda strange. PC0 -> PC1 is able to ping, PC3 -> PC2 is able to ping. But, I can't ping PC0 -> PC2, ...

I am new to the world of network so please bear with me. I have chained two routers to create two subnet at my home. I have two routers and second router is connected to my ISP ADSL modem router by ...

Could somebody tell me which model the ISP are using ? I have a leasedline WAN with following information. IP: XXX.XXX.XXX.123 Gateway: XXX.XXX.XXX.126 Subnet: 255.255.255.248 The problem is every ...

this is what I've tried, however when two devices have this configuration I get tons of garbage ARP/DHCP packets on the network. would appreciate any guidance towards the right direction, thank you. ...

I'm practicing addressing schemes using VLSM for my exam. The question and my answers are below. -I wasn't too sure about the number of hosts for the R1-R2 and the R2-R3 links. Are they correct?

I’m currently looking at the behavior of TCP upon failures, and more particularly at how does TCP send retransmissions when the RTO timer expires. I have run several experiments and I’m not always ...

I have a bottleneck affecting traffic. There are 4 switches with each of them running a line to the next to provide internet. I haven't played around with LACP LAG too much and am wondering if the ...

My company uses trading application where latency is utmost important. I have few ideas but really dont know how to implement. Like I want to know 1) How can I Prioritize applications by 802.1q tag. ...

I have few questions related to DHCP 1) In DORA process when client requests for the IP address can I call it as a packet or a frame? 2) If DHCP is not able to allocate IP address say when client ...