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Questions tagged [network-access]

One of the three layers of network design. The main characteristics of the network access layer is that it provides the access point for devices connecting to the network at a reduced "cost-per-port".

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26 views

IP Domain-name on aggregation layer switch

Hi I was trying to generate ssh key for a switch I read that , ssh key is generated as a combination of hostname and domain-name I created a domain name like test But doubt is , why isn't the ...
5
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1answer
53 views

DCF and PCF in Wifi-networks

I am studying, trying to learn how DCF (Distributed Coordination Function) and PCF (Point Coordination Function) works as access methods in WiFi, and how they relate to infrastructure vs ad hoc ...
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0answers
39 views

Network segmentation with VLAN and MAC auth: thoughts about implementation

Currently we have a medium-sized, flat network with some DHCP pools. This configuration isn't satisfying us anymore, as everyone can see everything on the network and it may leads to security issues. ...
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1answer
38 views

What's the meaning of “3D Universal Edge Routers”?

What's the meaning of "3D Universal Edge Routers"? I often see this term on Internet, but I do not understand what it stands for. Such as "MX240 3D Universal Edge Router", "MX480 3D Universal Edge ...
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1answer
28 views

Are there any advantage of using multiple threads for a file upload, for an internet connected node? [closed]

I got asked in an intervew recently to design a file upload feature. After initial discussion, The interviewer asked if I can design for multiple threads. My thought was, As the network bandwidth is ...
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1answer
96 views

Cisco 2960-S switch with MAB and Packetfence Web Authentication

I am trying to set up Packetfence In my corporate environment for guest users, with MAC access bypass. i have done everything like in the official Packetfence installation guide https://packetfence....
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1answer
41 views

Network routing/WAN failover

Hi any one recommend me WAN Fail-over in Cisco 2811 router in virtual interfaces I already try this configuration. but its not working ip route 0.0.0.0 0.0.0.0 192.168.86.1 ip route 0.0.0.0 0.0.0....
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1answer
44 views

Network ( routing and switching) , security

In my company network i am installing new cisco2811 router but i have problem, my LAN network can not ping and access network. i get point to point internet from ISP. PTP IP is 192.186.86.200/24 and ...
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2answers
100 views

How does the ARP table work in case of the Gateway Router?

Suppose I am a host, I understand how ARP works in case I address an IP within my subnet. For each IP address there is a corresponding MAC address, and the owner responds to my broadcast ARP query. ...
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0answers
27 views

What happens when either CTS packet or ACK packet gets lost

I have a question please regarding CSMA/CA with RTS/CTS. Say a station A sends a Request-To-Send (RTS) to a station B but A notices after a while that no Clear-To-Send (CTS) has been received from B. ...
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1answer
383 views

How should I connect two sites through the internet? [closed]

I have two sites which are 3km away from each other, both sites have internet access from the same ISP. I would like both sites to have access to each other throught the internet routers (TP-Link TD-...
1
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1answer
32 views

Options for Company A server access to Company B network (on same premises)?

I'm looking for the best way to allow access to another company's server from within our network (We are both located on same physical site). At the moment Company B have limited infrastructure and ...
0
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1answer
55 views

Authorize IoT devices to connect to a WPA2 network without a password

I have an air quality IoT device that connects to WiFi and report data to the cloud and are planning to install 100+ devices at a customer location. To install a device, the customer has to connect to ...
3
votes
2answers
494 views

Cisco ASA 5510 implicit deny dropping traffic despite permit any ACL

I'm trying to allow VPN access through a specific public IP address on our company ASA. The ASA is currently configured with a /29 public IP address as follows: Interface Ethernet0/0 "outside" IP ...
0
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1answer
138 views

Accessing Servers behind double NAT [closed]

Basically, I want to know every possible way to access Linux servers or any other devices located behind ISP'S (Carrier-grade NAT) and our local NAT. I have used VPN and forward-reverse tunneling ...
4
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1answer
132 views

MAC ACL to prevent access to unauthorized computers

My company wanted to prevent rogue PCs from being connected to our network. Network access must be allowed only for our company users and specifically for PCs, Printers.. that are provided by the ...
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0answers
411 views

Configuration mode locked exclusively by user 'unknown' process '13' from terminal '0'

Tried conf t revrt timer command along with archive command, after that I am not able to go to config t and do any changes it shows following error Configuration mode locked exclusively by user '...
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5answers
415 views

Access non-public IP computer

I am looking into methods how to access my PC from internet. I do not have a public IP (neither for my router nor local PC). I know I can do 2 things: ask for public IP and simply port forward ...
0
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0answers
61 views

Slotted ALOHA with Uniform Distribution Backoff

Let us consider a slotted ALOHA system with a finite number of N nodes, with each node having an infinite buffer. The transmission probability is p and the packet arrival is Poisson distributed with a ...
0
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1answer
28 views

Access Control Permissions

I have created a topolgy in packet tracer displaying two networks. I have cpnfigured VLANs on both of the networks and configured access control lists. However, I would like to configure access ...
0
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1answer
99 views

Can not access my router externally (from internet) [closed]

I have a router Cisco 900E. I am trying to access the router externally(from internet. Non local device). I read a lot about the issue and configured everything suggested. I enabled remote access via ...
4
votes
2answers
431 views

Unbundling local loop

When we are dealing with local loop, we indicate the last mile of connection from the CABINET (or whatever else) to the subscriber. Now, I'm asking to you, the local loop is the medium of the access ...
4
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1answer
939 views

Cisco port security static vs sticky+static

I don't see a different between the two. Both make it to the running config. 1) sticky + static Switch1(config-if)#switchport port-security mac-address sticky ? H.H.H 48 bit mac address Switch1(...
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1answer
253 views

Small office network setup help

We got a Linksys LGS552p switch (192.168.50.149), and a TZ400 Firewall (192.168.50.1) behind an "AT&T Modem", but we have external an IP address for the TZ400. I need to setup VLANs: 90 for ...
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1answer
201 views

Exposing server to external world [closed]

In my work network I have many machines (local and external). I mean that some machines expose to world website of company, another one exposes repository and so on. There are a lot of only local ...
0
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1answer
319 views

Tablet losing connection when switching to another router [closed]

Our organization has a very long hall way. I have two WiFi routers in the hall, 1 on the West end and one on the East end. When an employee walks from West end to the east in, the tablet switches to ...
1
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1answer
458 views

watch guard not allowing ping or traffic through wireless client

I have setup a little wireless network for some plcs we installed. When we connect directly to the switch or moxa awk 1131, we can ping all ip's 61.1 to 61.6 and also the gateway and get internet ...
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2answers
122 views

L2 network design questions

Good afternoon everyone. I would like to know the textbook answer to a network I've been asked to assist with. I have an IT cupboard which serves the location as the MDF. I then have a variety of ...
0
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1answer
117 views

Can't connect to FTP [closed]

I am using Beetel 777VR1 with Airtel Broadband. I am trying to connect with a FTP server but I am not able to access that. However with same credentials when I try to connect with my mobile ...
0
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1answer
125 views

Can a fortigate firewall know which device tried to access its restricted url?

In my network, a specific url is being blocked by fortiguard firewall. Now I want to know which all devices had tried to access that blocked url. I traced the mac address inside the packet. But how ...
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4answers
4k views

What is a “routable” IP? [closed]

Short bg: I wanted to host a website on my laptop (192.168.0.102) via apache server. I set up port 8080 and forwarded the port that I was able to access it via 192.168.0.102:8080. Then there was a ...
4
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2answers
170 views

Mobile IP in a large-ish IPv4 network

So we are looking into implementing IP mobility in our network. The use case would be for a laptop to be able to roam between wired and wireless mode of operation while retaining all TCP/UDP based ...
0
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1answer
351 views

How to force users to authenticate to get IP adress from DHCP?

Can You help me !! I want to force users to authentificate to get IP from DHCP-server (win server) if not they can't get ip @ adress !! even they are connected to network
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1answer
88 views

If multiple PC's are communicating to a server via a router, is the individual PC network traffic isolated to the respective PC's network?

I currently have multiple servers which are all on their own separate networks (each server on a different network talking to other devices). I want to implement a common central data server which ...
0
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2answers
80 views

Isolating a workstation on a network for remote access by contractors

Is it possible to isolate a computer on a network such that it can be accessed remotely by contractors, but not have access to any of the other machines on the network in any way? I understand it ...
1
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1answer
647 views

802.1x authentication and dynamic VLAN assignment of VLAN tagged frames

I want to implement a Network Access Control ( NAC ) infrastructure in my LAN. My topology is something like: PC -> ( Untagged Port - PVID 100 - Non 802.1x capable smart switch ) -> ( Hybrid port - ...
1
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1answer
84 views

Cisco Prevent Access to VLANS but Allow Some Machines by MAC

I am having issues with a Cisco 1921 when it comes to access lists and vlans. I have my vlan configured and interface with IP as well as the access group assigned to the vlan interface. interface ...
0
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2answers
50 views

How to connect 2 routers through the internet?

I have 2 branches and I would like to connect them together through the internet they are in 2 different cities so how this work and what protocols should I use?
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1answer
1k views

how to access computer in another NAT network?

if i am using Host c. i want list of ip address of particular NAT that are 192.168.1.1 ,192.168.1.2 in this image. So how can i get list computer ip address in NAT
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0answers
1k views

Cisco ASA VPN disconnecting regularly random time

We have Cisco ASA VPN IPSec with Sonicwall but we are seeing randomly after 8 hours or sometime 10 hours. I am unable to trace issue so just wonder is there a simple setting to renegotiate tunnel ...
0
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2answers
236 views

Same Wifi network but different speed on two computers? [closed]

I just installed a new Wifi and was testing the speeds on my computers, a Mac Book Air and a PC. Surprisingly, the Mac gives me a much higher speed in seedtest.net! How can this be possible?
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1answer
135 views

Can anyone read this network diagram? [closed]

Can anyone read this network diagram? I understand what a VLAN is. The information provided for the diagram is listed below. "To demonstrate a real-world model of how you might use VLANs, I created ...
1
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1answer
196 views

Can't access my PC using external IP

I am currently in a setup where I connect to the internet using wired internet. I directly plug in an ethernet wire from the ISP. They have provided me an internal LAN IP address which in turn is ...
0
votes
1answer
274 views

Connect between two branches [closed]

Hope anyone help me to inform me how can connect between two branches & what the technology use it and what devices need to pay on this project? ? Sincerely,
0
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1answer
82 views

ip addresses not meeting the IP addressing requirements of our company's network [closed]

Here is the situation: In my company we only use static IP addresses, the address of the router interface on which every machine is connected is 192.168.0.1/16.Our router support the DPI (Deep Packet ...
0
votes
1answer
2k views

pfSense join 2 networks

I've got 2 pfsense boxes taking care of separate networks, with separate gateways. We've managed to drop a cable between the 2 networks so would now like to join the 2 networks so machines on each ...
0
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0answers
57 views

Masking LAN IP with a proxy or VPN

I would like to create a Proxy or VPN that masks a Local IP. I have a server that needs to connect to a network. I have 4 users that each need to be seen as if they had their own IPS from the same ...
0
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2answers
77 views

Does one need to personally manage MLPS VPN connection to have MPLS between building or can the ISP provide this connection for you?

There are 3 buildings (IT system) that need to be links together but the distance between them are very far apart (min between 230 - 470 km). How do one manage to provide connection between all of ...
0
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1answer
593 views

WebEx Bypass HTTPS Scanning on a Sophos UTM

I'm running Sophos UTM 9 with decrypt and scan HTTPS traffic enabled. WebEx works fine when I turn off SSL Scanning for a machine, but I'm having trouble find all the URLs that WebEx uses; so that I ...
1
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1answer
52 views

How to test outoing traffic on random ports? (on OS X) [closed]

In some situations or on some locations, I'm struggling with restricted outgoing traffic. For example a restricted LAN where outgoing traffic is only allowed on limited ports. I know how to check or ...