All Questions

I need to replace my wifi router and have looked at different Ubiquiti solutions. I'm going to install this in my home, with two meshed wireless access points and several wired devices. My initial ...

I'm designing a network that basically needs to separate staff network and customer network. The client currently has a standard ISP modem/router that has no VLAN capability or any ability to separate ...

Server : Centos 6.9 1GIG Uplink IPV6 Hi We query a external server via a tcp port and if they have a collection of delays then we fire higher query rate. I am trying to tweak the tcp stack to ...

I was wondering if someone could provide some insight for the following issue. So I have a Network which uses the 'Router on a stick' topography. This has been subinterfaced to allow Inter-Vlan ...

Is this scheme possible? External provider = External provider of the internet Generally speaking, is there a way to assign a public IP address individually for each server to be used when SFP+ port ...

I have a question that relates to routing and switches. I am looking to set up a new Firewall that will handle the routing for the network and attached to the Firewall will be a switch. Here are the ...

I observed Rx power out of range in 4 controllers of CISCO 7600 router as given below- The Transceiver in slot 3 subslot 0 port 0 is enabled. Transceiver Rx optical power = -1.8 dBm ...

I have a router, connected to my modem, downstairs in my house. This is connected to a HomePlug, the other side of which connects to a second router upstairs. This allows me the lower latency and ...

Why is XGMII little endian while the network byte order is big endian (RFC1700)?

Maybe I am asking something which is way too unrealistic, maybe there is other solution to the problem therefore the direction I am looking towards is wrong. Please post a comment to help to ...

According to the SANS ISC, port 3301 is unassigned. Does anybody know the history or reason why this port is unused, when every port around it is assigned?

I have three offices and VPNs between them. 2 nodes have Draytek Vigor 2860. At the third I have have replaced a TP-Link Archer VR600 with a Fritzbox 7530. Currently, Nodes 1 & 2 are calling into ...

We know that before sending information TCP has to establish connection with other host. So, does the request from TCP get encapsulated by lower levels of stack protocols or it's just directly send to ...

I switched my ISPs modem/router to bridge mode and connected it to my router running openwrt. Openwrt router is connected using PPPoE. My ISP gives me it only an IPv4 connection. Pretty much ...

I have a series of IP cameras around my house which some are wired directly to my router and some are wired to a couple PoE switches that are then wired to my router. At the moment this setup ...

I practice "occasional networking" i.e. I set up stuff now and again based on needs, but between projects I forget plenty :) I have a seemingly simple question about static routing that is eluding me. ...

I'm Trying to connect to a server from within my university. I have to use the universities VPN to connect to the Internet though. The university VPN is L2tp(+PSK). I also have to use another VPN on ...

I have been reading about QoS and different strategies. From what I understand, Cisco proposes three different models and three different strategies for QoS. For strategies, you can have a 4-class, ...

I cannot find this cable anywhere online. A friend of mine has problems with his internet connection. On the back of his computer he's got a strange ethernet cable. Maybe it's a bad cable that's about ...

Can one speed up TCP transmission of packets if the no.of bits in sequence field and no. Of bits in acknowledgement field are reduced ? If yes , then how much time is saved? Mathematical equations for ...

I am trying to understand the linux bridging and local ip rules, I have following topology on my linux laptop. br0 ___________|__________ | | |tap0 ...

Currently my ISP has offered me to switch from 16mbps ADSL2+ to 70mbps VDSL2. I would like to know if I switched how much of the 70mbps will I be able to receive. Those are my current ADSL2+ details. ...

Looking for advice, how to configure public wi-fi network for pupil's mobile devices in a classroom to limit wi-fi usage time for individual pupil's device. The network schema is represented in the ...

I have a couple cat6 shielded cable runs for a few ip cameras. The runs go from the camera to a poe switch with metal housing ports. I used cat6 shielded cable connecters and attached the drain wire ...

My TP-LINK TL-WPA8630P V2 WiFi Powerline Adapter Kit - AV1300, Twin Pack won't connect. I managed to pair it to the adapter and then placed it at the wifi blind spot and it was working perfectly for a ...

I am getting CDP NATIVE VLAN MISMATCH logs on my Cisco 3750x switch stack. Gig 2/0/5 and Gig 4/0/6 are in no way physically connected to each other (neither is 1/0/44 and 2/0/13 as you'll see below). ...

I have 2 networks and I want to build a VPN tunnel between these networks. Currently this is how it looks like: On the main side, the vpn server is on its own linux device separate from the router! ...

I know that in wireless networks, due to channel variations, usually the transmitter tries to opportunistically adapt it's bit transmission rate. I am wondering whether it is possible to adapt the ...

I'm using a network camera (IPCAM), connected by wifi to a Netgear (Nighthawk 8000) router which is behind a Comcast cablemodem. I just found out that on my cell phone, running the CAMHi app (made by ...

CGI scripts are on the application level (HTTP) so I would think that are not aware of header info from lower layers. Indeed, if you analyse the HTTP headers in Postman, there is no source port, ...

On my new job I have inherited a service wpa2-enterprice with peap+freeradius+openldap. As NAS we use ArubaIAP with enabled function "eap-termination". And this bundle works well! Little deep: In ...

Iam beginner in dealing with routing and networks i have designed a network using packet tracer i have used the default 255.255.255.0 My question is How i can design the subnet masks for every ...

Pardon me if I am stating obvious/silly questions. If I put a router in bridge mode, my understanding is that the dhcp function in that router is disabled and the IP address that we receive is ...

I am using a switch chip (KSZ9897) with DSA linux driver. I have configured a bridge with vlan_filtering enabled: ip link set dev br0 type bridge vlan_filtering 1 Each interface on the bridge is on ...

I have theses two switches, 3Com 4500 and 3Com 2928. 3Com 4500 - IP: 20.20.X.X ; Mask: 255.255.240.0 3Com 2928 - IP: 192.168.1.X; Mask: 255.255.255.0 There is a printer(20.20.2.1) connected in the ...

I want to calculate the power density in my cellphone. For Wifi signal, bluetooth or mobile network. Is it possible to do?

i know my IP and i can simply connect to my router from my local connection via 192.168.1.1 then what is the reason i can't connect to my router (i know my IP eg. 183.130.149.90) via another ISP, i ...

Issue, I tried setup and connect to VPN with SecurID, but nothing happened. I have this information about VPN. authentication method: SecurID; SecurID authentication: PinPad. Question, is possible ...

When I run tcpdump on my machine (here I use 1.2.3.4) tcpdump -i eth0 -n dst host 1.2.3.4 -v roughly 90% of incoming packets have incorrect checksum: cksum 0xc25b (correct), seq 101134607:101136035 ...

I have used network policy server on my Windows Server 2012 r2 to manage my accounts on router 1941 but after I used auto secure to harden my router, all my accounts cannot log in anymore, any ...

When going to a website we see https://example.com, I know the purpose of http and https protocols, but what is the purpose of "://" after? I know "\" is being used for directories, but still dont ...

I want to find out how the MOS value is calculated in RTCP packets. different places give different details, like it is just a sum, where you start with an R value and using a formula, factor in ...

I recently moved into a new apartment building. It was just built a year or two ago and came pre-wired with fiber and there's a mesh wifi network provided by Dish Fiber. So far my impression of their ...

Operating systems deal with the TCP stack automatically when you open a socket. They respond to SYN/ACK, follow the sequence numbers and hold a buffer to store packets until they request for previous ...

Let's say I have 2 locations: 1. the United States Datacenter 2. the Russian Federation Datacenter I have 1 /24 Subnet with 1 AS. Both sites have a different ISP. My target is to: allocate /24 for ...

in windows we are able to set a timer in ms like this: ping -w 500 How can we do such thing for packet tracer 7.2.2?

I try to deny ssh access from routing-instance CPEs in Juniper MX960 device. I want to know if there is a way to deny only ssh access attempt from any routing-instance.

Hello Networking Jedi Masters, I recently set up vFlow, an open source sFlow collector from Verizon Digital. The collector works great, is quite stable, and easy to manage. I can’t say enough nice ...

I've been managing a small camping site for several year that provides internet access to visitors as well as staff/management VOIP and for the owners who live on the site. Because of poor internet ...

Cisco Licensing is very strange and I spent over 4 hours reading about its obfuscated software licensing plan. My question is simple. Do I have to purchase 5 different licenses of Cisco DNA Premier (...