All Questions

0
votes
0answers
3 views

TCP tranferring a 10kb file from host A to host B and its segments

I have two questions to ask here because my university sucks and I couldn't find any information in the lectures or the internet: The first one is: The network connection between Host A and Host B ...
0
votes
0answers
8 views

How to have ethernet connection in my room when my living room [on hold]

My router is in my living room, it has a LAN cable connecting from a data point in my living room to the router. Now the problem is, I want to have ethernet connection in my personal room (which has a ...
0
votes
0answers
3 views

1:1 NAT with OPNsense and a GRE tunnel, only some packets are translated

My home router is a virtual machine running OPNsense. I have a dedicated server with an IPv4 subnet routed to it, and I have set up a GRE tunnel from my dedicated server to my home router so that I ...
0
votes
1answer
9 views

NAT + load sharing

I would like to do NAT while load sharing is active on R1 and R2 (cisco routers). Do you have any ideas how should I do it effectively? Is there some way to share a common NAT table between the 2 ...
0
votes
0answers
10 views

Redundant physical interfaces for Cisco pseudowire-class

I have a link which is LT2P from a site router R1 (Cisco 867-VAE) which has two external interfaces defined (dialer1 and vlan-1000), but only one plugged in (first is ADSL, second is technician's 4g ...
0
votes
0answers
11 views

class B Network subnetting Clarification [duplicate]

can anyone help on network subnetting, A class B network the ip address is 128.211.0.0/16 which means the subnet mask is 255.255.0.0 i want to create 20 subnet network from that the IP address 128....
0
votes
0answers
18 views

Dynamically assign addresses in an IoT IEEE 802.15.4 Network

Some context First let explain the context, for a course I had to create some protocol to save power consumption in a IoT IEEE 802.15.4 network (thus how to optimise the routing, fault detection, ... ...
0
votes
0answers
11 views

connections hang forever with VPN [on hold]

I access corporate resources through vpn (OpenVPN). The problem appears only when I am outside of the company (inside I am using wifi), when I am using my phone's network. The symptoms are following: ...
0
votes
0answers
10 views

ppp-ppoe in network

Someone in my network did somehting they shouldnt. All I got from them was an IP (which is the same for everyone in the network. Followed by ppp-ppoe-somethingHere. How can i find out which specific ...
0
votes
0answers
6 views

Implement ifb between two internal interfaces [on hold]

I have two local interface : guest-lan and other-lan and wan inteface. My purpuse is using tc with ifb logical interface that have one htb queueing discipline between two lan inteface for example if ...
2
votes
1answer
27 views

Unable to use HTTPS Managment “API” on Cisco ASA 9.12

After upgrading a Cisco ASA to code version 9.12(1)3, I am unable to reach the HTTPS management interface, which we use for many automation tools. Example curl that is functional in prior code (9.8 ...
1
vote
1answer
28 views

Reliable transfer but unreliable auto-negotiation?

I have two servers, the first with a built-in and add-on 10gbit port, and the second with built-in gbit and add-on 10gbit (Syba AQC107), communicating through a feed-through rated for gigabit ...
-1
votes
1answer
10 views

Properly configuring recursive dns within an intranet [on hold]

We have an internal intranet that we'd like to be hierarchical in nature, something like: internal.example.com (ns at ns1.internal.example.com) clientA.internal.example.com (ns at ns1.clientA....
0
votes
0answers
8 views

Best settings for home network router [on hold]

what should I keep enabled and what should I disable for best performance. Now Im losing packets very often. Internet provider told me there is no problem on their side.. :/
3
votes
1answer
89 views

Ingress filtering on edge routers and performance concerns

The RFC 4778 cover the Operational Security Practices in ISPs Environments back on 2007. Among the best practices, a common one is Ingress Filtering on edge routers. In the above RFC, the author says ...
1
vote
2answers
49 views

Do we send the same packets when we send the same data?

When we send the same data over a network twice, does this means that we are sending the same packets twice? I am trying to understand how my decoder works, so I command using an application on phone,...
0
votes
0answers
15 views

What is exactly builtin VPN client? [on hold]

I'm wondering what differentiates built in VPN or third party VPN client. For example, iPhone has excellent VPN support for client. Is this a functionality provided by OS? Or, is this just like ...
2
votes
2answers
37 views

Hub-Spoke communication with BGP

I'm trying to establish connectivity between Hub and Spoke locations of same enterprise with same AS using BGP. Within DC (hub) iBGP and OSPF is used and eBGP is established between Spokes and MPLS ...
2
votes
2answers
37 views

What are metrics to measure the load in Cisco Routers

I have a setup of Cisco CSR 1000v routers. I established a GRE tunnel between 2 routers, where the tunnel's source is the GigabitEthernet1 interface. I aim to measure the load on that GRE tunnel. The ...
0
votes
0answers
11 views

Windows use LAN but also have access to SMB share on remote Server [on hold]

I have a Virtual Private Server hosting an SMB share that I would like to have permanent access to on my Windows 10 machine (via mounting it as a network drive in Windows Explorer). The server is ...
0
votes
0answers
13 views

How should i modify this network diagram if i am planning to implement a Software Defined Perimeter? [on hold]

Usually there are employees that connect to the remote access server in the DMZ. However, the company is facing DoS attacks from one of those trusted connections. I am planning to opt for an SDP. What ...
1
vote
0answers
21 views

Why Korenix Switches hang up SSH so often? [on hold]

Does anybody know, why Korenix Switches hang up SSH so often? And then, you have to restart the switch each time, that happen. On HP Switch there is no problem with that SSH. If anyone has any ...
0
votes
0answers
13 views

does ipsec phase1 renewal keep connections?

I have an IPSec tunnel UP and I open a TCP connection when the phase1 expire and is renewed, Is the TCP connection supposed to stay alive or drop ? both in the theory and practical (cisco, ...
0
votes
0answers
15 views

pfsense CARP not working with many VLANs and multiple WANs

I have a network with 10 VLANs and two WANs. Following https://docs.netgate.com/pfsense/en/latest/book/highavailability/example-redundant-configuration.html I tried to set up CARP. I have made a ...
0
votes
1answer
29 views

1 switch handling several servers or several switches handling a server each?

Which of those two approaches are better for a more stable network? I was thinking 1 switch handling several servers so that other switches are able to handle other devices such as a desktop PC or ...
0
votes
0answers
12 views

Can't Find Latest Firmware for CiscoLinksys SLM2048 Switch [on hold]

How can I get get the latest firmware on a obsolete Cisco switch? Specifically, even though the CiscoLinksys SLM2048 is retired equipment, I have one that still works well, and I'd like to install ...
-1
votes
0answers
15 views

Subnetting of the IP address 160.11.X.X [duplicate]

I have problem in solving subnetting of the following IP address 160.11.X.X. Original subnet mask 255.255.0.0 and number of subnets 6 (six).
2
votes
0answers
25 views

How is a MS (Mobile Station) Identified prior to GPRS attach?

So, originally the MS sends a Packet Channel Request over PRACH and then the BSC responds with a Packet Uplink Assignment over PAGCH. How does this PDTCH allocation get picked up by the correct MS? I ...
3
votes
1answer
21 views

SG3xx Password Reset/Recovery

Trying to reset a password for a number of switches I have. Didn't save the text file I had jotted it down in....of course. Connected via serial, but cannot seem to locate any concise info on ...
-1
votes
0answers
9 views

How to calculate the free bandwidth scope and re-routing the packet in the network MPLS Using OMNET++ with an INET project? [on hold]

I want to know, How to calculate the free bandwidth scope in the MPLS network Using OMNET++ with an INET project? How to re-routing the packet in the MPLS network Using OMNET++ with an INET project?
2
votes
1answer
21 views

Hp procurve 2510 ssh problem

My app connects to switches via ssh to gather info from them. I can connect to any model except this one. I get the authentication error from the switch yet i can connect via putty with the same ...
-1
votes
1answer
54 views

Cable can connect to laptop but not recognised on switch

I have a cat6 network cable running for 40m to an outbuilding which houses my work office. Recently it's been the case that the connection can be made directly on my laptop, but switches (and the ...
-1
votes
0answers
16 views

Get last logged on Windows-User without administrative access [on hold]

I don't know if this question belongs in this section but I could not find a community where it could have fit better. we're currently working on a mixed list of ip addresses and / or hostnames. ...
4
votes
1answer
53 views

Same Vlan Name / ID on different switches network subnet same or different?

I have several switches (some on same floor and another on other floors) all connected to core layer 3 switches through trunk links. One of the vlan id / name is repeated along the switches. May I ...
0
votes
2answers
42 views

Delay, Packet length and transmission rate

Why does the delay in sending a packet from source to destination doesn't depend upon the transmission rate and the packet length? If we look at the delay formula then it is, L/R + D/V.
0
votes
1answer
65 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 ...
-1
votes
0answers
6 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
15 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 ...
-1
votes
0answers
15 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
23 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 ...
3
votes
1answer
21 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
13 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
33 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....
1
vote
0answers
17 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 ...
2
votes
1answer
49 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 ...
-1
votes
1answer
33 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
23 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
58 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
18 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'...

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