All Questions

0
votes
0answers
15 views

Capturing Wireless Network Packets

See below link that I was unable to comment. Sorry for the dupe but I have tried hard to get a satisfactory answer to this question. Upon reading the WS docs and others, I am led to believe that I can ...
0
votes
0answers
4 views

Combine link sharing and connection failure detection with TL-R470+ router [on hold]

I've got a TL-R470+ load sharing router, which is connected upstream to two modem/routers which in turn connect to DSL lines. I want to load share across both upstream connections. The load sharing ...
0
votes
0answers
6 views

Mobile router with firewall or website blocking options [on hold]

Looking for a mobile/WiFi router that can block access to certain IPs or websites. Any suggestions?
0
votes
0answers
11 views

Why are large networks unable to rely solely on the use of physical addressing? [duplicate]

First of all, I would just like to point out just how new I am to the subject of computer networking. Therefore, I apologise if my question seems a poor one however I am currently unable to find an ...
0
votes
0answers
12 views

Phone cable categories [on hold]

I need to change the phone wires of my house because their are very old and broken. I know about network cables but I want to know which phone category is recommended for the interior of my house. I ...
0
votes
0answers
20 views

organisation with administrative network can't reach our website [on hold]

I have hosted wordpress web site for my client. The site is hosted on cloudways, the DNS is managed through telnet. The site works fine except for one organisation that works with an own ...
0
votes
1answer
12 views

pfsense DHCP lease remember time settings?

pfSense remembers DHCP leases for a quite long time, which is good use on a LAN where the same machines request IP numbers frequently and have a chance to always get the same leases. However on an ...
0
votes
0answers
10 views

Allow outside access to program while firewall is on [on hold]

I have a pc that has a system that somehow I wanted to launch on the internet. To do this, I added a public ip to the pc. Then in my hosting, I adjusted the subdomain to reflect the IP Address of the ...
1
vote
0answers
27 views

Why do I observe a 4-way TCP handshake instead of an expected 3-way when establishing a connection? [duplicate]

I'm doing a simple HTTP GET query on a localhost from curl to a local webserver. After I did a tcpdump I noticed these packets to be sent each time a request is done: 11:11:27.537300 IP 127.0.0.1....
0
votes
0answers
10 views

IS-IS as a PE-CE routing protocol

In case of IS-IS as a PE-CE routing protocol for MPLS VPNs , when route is redistributed from BGP to IS-IS , does 'Down Bit' is also set to avoid routing loops?. Background Information We know that ...
0
votes
0answers
20 views

Juniper SRX answers all ping requests instead of forwarding

I have about 4 different subnetworks at my place, when i'm trying to ping to static device in subnetwork1 from subnetwork2 i always see that device pings, even if it's off. I assume my SRX300 answers ...
0
votes
1answer
28 views

How cellular networks gets internet? [on hold]

Mobiles get internet but how? From the towers, we used to get signals and communicate with others like calling or a message but coming to the internet how in the terms of networking terms like radio ...
0
votes
0answers
18 views

Site not accessible through public IP from intranet [on hold]

I'm hosting some sites/services like Jenkins on a server I've got at home. I'd like to have them accessible from the Internet as well as intranet through a public domain name. For this I've registered ...
-2
votes
2answers
36 views

is it ideal for a network that abandon the use of L2 switch?

I'm thinking about minimizing network hardware while optimizing network topology for company. If a company has unlimited(or very high) budget to build an ideal network for internal use(traditional ...
0
votes
0answers
13 views

openVPN client connects to VPN server from Android app but not from Ubuntu or iOS app [on hold]

Disclaimer: I am posting with full knowledge that the school owns the network and has every right to restrict traffic as they wish. My rpi3 is running an openVPN server configured using PiVPN and it'...
1
vote
1answer
22 views

Is this computer a threat? On same network range, but in a workgroup

We have a normal on-premise Class C network with an internal IP address scheme of 192.168.15.x (hypothetical). We have a SonicWALL device that acts as a VPN server for external clients, a DHCP server ...
0
votes
0answers
18 views

Confused in the concept of subnetting [duplicate]

I am doing sub netting and want to confirm that if my method is correct or not. Suppose we are to design a network that has 2 departments. Department 1 has 32 number of hosts and department 2 has 64 ...
0
votes
0answers
12 views

Subnetting related questions [on hold]

Coming up next week i have an examination on Networks.Having said that,crossing past papers i came upon this exercise(Picture).Most of the questions iv solved do not have this format so im kinda ...
0
votes
0answers
17 views

MPLS monitoring [on hold]

the question is that there is a network using Cisco, HPE, Mikrotik devices with MPLS L3VPN backbone (OSPF, LDP, MBGP). I can not understand how to monitor LSP paths, as well as client VPNs (to ...
0
votes
1answer
35 views

Cisco nexus 9396PX TX output discard on 40G interface without link congestion

We have cisco nexus 9396PX with N9K-M12PQ module (12x40G Interface), We have 8x10G L3 LACP bonded connectivity with our ISP and so far so good no issue at all. but recently we migrated that LACP LAg ...
0
votes
0answers
16 views

why the DOWNLOAD speed is 124 mbps, but the upload only 19.83 mbps? [on hold]

I have a server in Los Angeles, when I use speedtest for testing the network speed. you see the DOWNLOAD is 124.07 Mbps, the UPLOAD is 19.83 Mbps. so, I have two questions: 1. the DOWNLOAD is Server ...
6
votes
1answer
1k views

Cisco 3750X Power Cable

I received a Cisco 3750X the other day. I went to go plug it in for testing and found that the standard three prong female power connector is no longer compatible with the power supply. Cisco has ...
0
votes
2answers
50 views

Why my ACL doesn't block the ping of the gateway but filters correctly everything else?

I am using a router/switch Cisco C1111-8p with IOS XE 16.8. I have 3 VLANs: 1: native/management 20: dev 50: Guests I'd like to block Guests/VLAN50 to communicate with anybody else but Internet. ...
0
votes
0answers
14 views

Shadowsocks speed vs VPN speed [on hold]

I've been looking at Outline and the underlying technology, ShadowSocks From what I understand, ShadowSocks is a Socks5 proxy with encryption built in. Usually VPNs tend to be slower than Socks ...
0
votes
3answers
30 views

What's the technology of bind MAC address with IP address, for solving iP conflict issue?

What's the technology of bind MAC address with IP address? I have a problem with the LAN, such as in my LAN, there are 192.168.100.0/24, gateway is 192.168.100.254/24. user A's IP is 192.168.100.1/...
0
votes
0answers
26 views

Default gateway query/Confusion [on hold]

I have VMware workstation 15.X and set up the following networks set up via the network editor: VMware workstations on a Vmware Network (Vmnet). The ip subnet of 10.3.3.0. VMware workstations on a ...
0
votes
2answers
30 views

Connection between two networks with different IPs and identical subnets?

How can we establish communication between two networks with different IPs but same Subnets? Network Connection 1: (Factory Network for machinery) I.P = 192.168.19.X S.N = 255.255.255.0 G.W = 0.0.0.0 ...
0
votes
0answers
17 views

How do I calculate the likelihood of a network partition if nodes connect randomly? [on hold]

In a decentralized network, if each node connects to N random nodes, there is some likelihood that this will create multiple networks rather than a single network graph. How do I calculate that ...
0
votes
1answer
27 views

Multi Area OSPF configuration in cisco packet tracer

I am a bit confuse in the concept of multi area ospf. I posted 2 days ago. And I was asked to leave the one interfaces of each router out of the circle. Now the center circle is area 0. The top circle ...
0
votes
0answers
12 views

Benefits of encapsulation? [on hold]

Some benefits for encapsulation can include: data can share network links since chunk of data is identified individually, data can be flexibily routed over different routes, encapsulation allows ...
0
votes
0answers
7 views

Hook second router to internet wirelessly? [on hold]

I have a router hooked up to a modem, and I have another router. What I want to do, is have the router broadcast a completely different network than my other router, but still have my second router ...
0
votes
0answers
9 views

How can I add a storage device to my router? [on hold]

How can I add a storage device such as pendrive to my router , which can be accessed by all device connected to the lan network (router) ?? NB : low cost is a must 😁 TIA
1
vote
1answer
245 views

TCP Three Way Handshake?

I have the following query about the tcp handshake. To establish a connection the server must send a packet with SYN flag to 1 Then the server replies with a SYN,ACK flag to 1 , and afterwards the ...
0
votes
0answers
18 views

How to do IP masquerading on MacOS (10.14+)? [on hold]

I am looking for the equivalent Macos command to the linux: sudo iptables -t nat -A POSTROUTING -o en0 -j MASQUERADE The reason i want to do this is I have a VPN that has the default route, but i ...
0
votes
0answers
11 views

Ftp uploads are slow on windows, not macos or Linux [on hold]

Our church only has dsl avaliable to the area, so we currently have 8 runs of 25up 5down dsl from telus bonded by skyway west. It works decently all except for one thing our ftp uploads are very slow ...
0
votes
0answers
19 views

Huawei APs on Alcatel switches? [on hold]

I work in Serena Hotel. Here we have a Core switch 9700 on which Huawei Access Controller is connected on Port 2/17. Then we have 2 distribution layer switches 6850 connected on Core switch Port 1/1(...
0
votes
0answers
10 views

Problem with Sharing a 4G Network using multiple Access Points [on hold]

I have a really interesting problem in my home network currently. Due to DSL speed limitations of our ISP in my area, I upgraded to 4G network with roughly 3x the speed I get from my previous DSL ...
-1
votes
0answers
16 views

Splitting into 4 subnets [duplicate]

I am trying to attempt a past exam question. The question is as follows, Consider a router that interconnects four subnets: Subnet 1, Subnet 2, Subnet 3 and Subnet 4. Suppose all of the interfaces ...
0
votes
1answer
24 views

What happens if we try to access an IP Address that does no exist

Beginner Question: I just read an article talking about how the internet works and how routers make sure that packets arrive at the destination. However there is one thing that is not explained ...
0
votes
0answers
9 views

Multiple DHCP servers detected by access points [on hold]

I’m having an issue with our internal network and voip network. I currently have it setup as a non-converged network separating our two data switches and one voip switch. We preferred not having our ...
0
votes
0answers
12 views

Is pair cable always full duplex? Can it be half duplex at double the bitrate? [duplicate]

This is probably a newb question, forgive me. For pair cable, there are two signals that can be sent: following that logic, it seems like you could have two situations: full duplex at bit rate X in ...
0
votes
0answers
9 views

How to PORT forward through a VPN? [on hold]

I'm connecting to my client's PC through a VPN that put me inside his network and then through RDP (Remote Desktop Protocol) using the Windows client. Everything works well but I need to have access ...
0
votes
2answers
37 views

How to give one pc with dhcp a default-gateway while the rest use static ip and static default-gateway

I have this topology where the PC0, Server0 and PC4 use static ip and static default-gateway, but one pc is Request DHCP, so i have to use DHCP ip address for him and static ip for the rest, now the ...
1
vote
1answer
27 views

Suppress CLI terminal output on IOS

I would like to know if we can suppress certain lines from being displayed on the CLI. Example: I call following TCL script, that in itself calls some other scripts. What i Get on the screen is this: ...
0
votes
1answer
38 views

Giving different OSPF areas to a router

In the topology shown above each circle represent an area. Now I want to configure multi area OSPF on each router. So for the first router can I do like this: router ospf 109 network 192.168.11.0 0.0....
0
votes
1answer
19 views

How should DHCP servers respond to subsequent requests from same MAC address? [on hold]

I'm handling a wireless router device (Asus RT-AC66U) that advertises a so-called Repeater Mode. This mode allegedly picks up an existing WiFi signal and repeats it, while it disables DHCP and NAT ...
0
votes
0answers
21 views

Is this setup possible. Multipler user PC's & KVM. 1 Shared PC - Switch [on hold]

I'm not in an IT role or an engineer. In fact i'm usually just on the coding, excel & share point site. However I do have a requirement that i want to check is possible as it seems to have been ...
0
votes
1answer
27 views

What does multi area OSPF mean?

Does this mean that all the routers in a given topology should have different values of area or just one i.e. area 0?
0
votes
0answers
8 views

3G EA CLICK board doesn't respond to at commands anymore [on hold]

I am sending AT commands to a 3G EA CLICK cape(which has a Quectel UG95 chip). The problem is that the cape doesn't return anything. I have the cape connected to the PC through a USB-to-UART converter(...
2
votes
1answer
57 views

Setting Destination MAC address for RTP/UDP packets

I have a requirement where I have to send the UDP packet to a destination multicast IPv6 address. In addition to that the packets must also have corresponding destination multicast MAC address set. I ...

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