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Encryption between two switches

We have two offices located across the street and the distance allows us to keep everything in one LAN without going through the Internet. However, it seems to require some MITM protection, since the ...
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0answers
12 views

Concept of multiplexing in the context of MPLS

In any transport over MPLS (AToM), a customer's pseudowire (PW) is set up within a pre-extant label-switched path (LSP). This results in a label stack of two labels, with the customer-PW's label at ...
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0answers
8 views

Juniper QFX Site to Site VPN

Im trying to setup a site to site vpn between two Juniper QFX5110's. Each end of the link is on the same subnet (so directly connected switches over dark fibre). I have configured each physical ...
0
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1answer
21 views

Destination NAT on Cisco ISR

I know how to perform regular overload PAT in my lab running sh ver Cisco IOS XE Software, Version 16.03.09 Cisco IOS Software [Denali], ISR Software (X86_64_LINUX_IOSD-UNIVERSALK9-M), Version 16.3.9, ...
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0answers
15 views

Losing device when plugged into a switch [closed]

I am currently having issues communicating through a Siemens Scalance XC224. I have two SICK AFM60 absolute encoders that used to work through the switch. A random power outage came by and now we cant ...
0
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1answer
35 views

RSTP sending BPDUs out of the network switch?

I need some information about RSTP If the port state is blocking, discarding alternate . Should BPDU be sent to external ports? I cant see any BPDU in wireshark if the port states Alternate,Discarding ...
0
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1answer
22 views

Segregating the network for VMware virtual machines [closed]

This is more of a network design question, rather than question on specific implementation details. I want to discover, how I should solve my problem using best practises, because I have never done ...
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0answers
10 views

Domain name not working internal network but works external networks [closed]

I'm using an Ubuntu system which hosts my domain example.com in an apache server. Recently I have changed my router and configured all virtual servers with proper port forwarding. Unfortunately, after ...
0
votes
1answer
32 views

How to dynamically route multicast traffic? [closed]

I have a point-to-multipoint network composed of one mobile wireless video emitter and several receivers, the wireless network creating a LAN between all those devices. The receivers are connected to ...
0
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0answers
16 views

Inter vlan with layer 3 switch and ACL [closed]

layer 3 switch is connected with different vlan's using trunk ports and taking ip from DHCP server, now i want to block ping from pc2 to pc5 but it does'nt work. i apply command also but still when i ...
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0answers
12 views

Can I connect 2 Switches to my Modem/Router, in 2 different ethernet ports? [closed]

I want to user (1) switch connected to ethernet port 1 of my router/modem combo and use another switch connected to ethernet port 2... can this happen, as in will both Switches work? I have almost an ...
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0answers
15 views

Statis IP address changing [closed]

I have a system with three NICs, two NICS have a static IP and one has a DHCP IP. The static IP keeps changing and the config files .xlr keep disappearing. Any ideas? Antivirus?
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0answers
12 views

How to find which protocol is used by lower layers? [duplicate]

When we type https://stackoverflow.com/ all the data which is sent to this server would be using HTTPS protocol in transport level So is it possible for me to know which error detection, flow control ...
1
vote
1answer
44 views

How to capture mixture of packets with and without VLAN tag over LACP with tcpdump?

Given following configuration in Linux: bond0 in LACP (802.3ad) mode with two VLAN networks running over it. bond0.111 configured with static IP bond0.222 configured with DHCP How to capture packets ...
-1
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0answers
17 views

IP address reported by OS different from IP address reported by router [closed]

My notebook computer does not have an RJ45 port and I have to use an USB-to-Ethernet adapter to connect my machine to the LAN port of my router. My operating system is Microsoft Windows 10 and ...
-1
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0answers
10 views

How to choose step for neuro evolution? [closed]

I’m creating networking for playing checkers. And what to use evolution algorithms to find best weights for my network. But how to create offsprings of network? By what amount weighs should be mutated?...
1
vote
1answer
33 views

ssh from cisco with fake source-ip

I have two cisco devices directly connected. router1 = 10.70.223.96/31 router2 = 10.70.223.97/31 on router2 there is an admin ACL permit 10.64.95.0 0.0.0.255 so I can't only SSH router2 from that ...
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0answers
12 views

I need help please [closed]

This is probably the stupidest question ever but I have to ask .... how can I get to the bottom of who owns this up address 169.234.229.230 ? I went thru some websites but couldn’t make sense of it ...
0
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2answers
21 views

what happend when inbound traffics over the limit of bandwidth? [closed]

Sorry for my English. Let's say there is a chat server in AWS and it has bandwidth limit like 5Gbps. Someday, massive user comes and it spikes a lot of traffic in a second and finally it overs 5Gbps ...
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2answers
28 views

Paloalto:Same segment but different zones

I am a novice and I don't have a paloalto at hand. I don't know if it is possible that two devices communicate each other one of which belongs to Trust Zone and the other belongs to DMZ Zone. However, ...
-1
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0answers
8 views

How do peer to peer file sharing systems get the public ip of users? [closed]

I am trying to understand how peer to peer networks work, and I can't figure out how peer to peer file sharing systems like bit-torrent get the public ip of the users. For e.g. If I have to copy some ...
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0answers
7 views

Connect two routers using wireless! [closed]

I am following this advice here. I have not managed to setup the secondary router yet. I don't see how what configuration here actually connects you to the primary router. I WPA-Personal on the ...
0
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0answers
9 views

Mechanics of ssh into server [closed]

I have a server created on a server hosting platform and can ssh into it but I don't understand the mechanics behind it. When I want to ssh into something it normally has to either be on my same ...
0
votes
1answer
23 views

Why do baseband transmissions use TDM?

To the best of my knowledge, baseband transmissions use (only) time division multiplexing. Why is that so? TDM isn't as efficient as statistical multiplexing. Why is TDM preferred for baseband ...
0
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0answers
8 views

Simulating an IoT Fog Cloud network [closed]

I would like to know if anyone here knows a network simulator like GNS3 in which i can emulate a network composed of two layers: a Zigbee network and some FoG nodes with minimal systems and one cloud ...
-1
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0answers
12 views

All sites require me to solve captcha [closed]

Good morning, I'm kinda sure that this is network problem so I'm posting it here, if its in bad category then I'm sorry. I have two problems, the first one is that I'm required to solve captcha each ...
0
votes
1answer
15 views

no way of knowing whether or not the receiver has correctly received the last piece of transmitted data when checksum is corrupted? [closed]

I was reading a text book which shows a simple reliable data transfer service that is similiar to TCP: And the author said: Protocol rdt2.0 may look as if it works but, unfortunately, it has a fatal ...
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0answers
11 views

Are P2P UDP connections established via ICE reusable? [closed]

By "reusable" I mean, once the connection is established could the original process unbind, allowing another processes to use the IP:port? For example, could a web browser establish a webrtc ...
0
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2answers
34 views

Why is in all arp table snmp oids an interface index before the ip number?

When I want to get arp information about a single ip number or subnet, I have to snmpwalk the whole arp table, as some oid architects had the "great" idea to always insert an interface index ...
0
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0answers
14 views

Why does my laptop kill my network even when it's turned off? [closed]

This is a really weird issue. Here are the players: My laptop: a Dell Precision with Pop OS 20.04 (a Ubuntu / Debian spinoff) which I use mainly for development work. It has Docker installed which ...
0
votes
3answers
41 views

Does Anycast allow any low-level destination control?

As an experiment, I'd like to get responses from a few different 8.8.8.8 servers (per anycast, multiple physical machines are grouped as one IP address, and I believe inspection of the request/...
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0answers
12 views

cannot ping or ssh from deviceA to deviceB. deviceC to deviceB or deviceA to C works [closed]

As title says I have: PC (windows) (deviceA) raspberrypi4 (deviceB) PC2 (windows) (deviceC) I recently changed hostname on rpi4 and since then I cannot ping or ssh into it from my PC... sshing or ...
0
votes
1answer
25 views

How can i set up a Wireless LAN to serve 20,000 concurrent devices [closed]

How can i setup a wireless LAN that can serve up to 20,000 concurrent devices. I am having a problem in figuring out if i need one router or several routers. A topology diagram with explanation would ...
0
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0answers
16 views

Proper configuration for using an old router as an access point/switch? [closed]

So I've moved house and re-setup the network, pretty much the same apart from a different router and new Ethernet cables. And I think I should configure all the infrastructure more suitably and ...
0
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0answers
19 views

Sophos AV: suspicious [closed]

Hello I don't really don't know where to ask this question and I'am new in here. My problem was that I tried to get a link into VirusTotal to try to see if it has some virus, the problem is that when ...
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0answers
6 views

ATT compatible modems [closed]

I do not like AT&T's gateway modem/router, I have a Netgear Nighthawk router and I'm looking for a modem that's compatible with AT&T's "ONT" connection...
0
votes
0answers
11 views

isolate IP cameras in separate network using a 2nd NIC on my windows machine [closed]

I have blue iris running on a windows machine. Atm, my Ip cameras are all on my network. I want to isolate them in a separate network. Was thinking adding a 2nd NIC on my windows machine, connect all ...
0
votes
0answers
16 views

Accessing OPNsense firewall from an upstream LAN [closed]

I've installed OPNsense firewall downstream of my router and can't access what's behind it from the LAN. The complete network looks like: Internet (public ip) - Router (192.168.0.1) - (192.168.0.144) ...
0
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0answers
9 views

This site can't be reached error with ERR_CONNECTION_RESET [closed]

so the problem happens lately that my site is not working for me and for all of my customers with the error message site can't be reached. the part it got me confused it when i use VPN it works fine. ...
0
votes
2answers
36 views

What is the easiest way to regain access to the Sonicwall configuration management after I have locked myself out by deactivating https management

I am a newb and misconfigures my Sonicwall Soho 250; it has two Interfaces configured: Fritzbox without any management activated, and WAN, where only ping and https management was activated. I ...
0
votes
0answers
11 views

Cannot Ping Devices connected to powerline when RE200 is on the powerline network [closed]

I am a proud owner of TP-Link Products and things are going well regarding everything except with something regarding this configuration. When the RE200 is connected to the network, Devices connected ...
-1
votes
0answers
13 views

What are the main capabilities info that are matched during the Association process in 802.11?

I have started reading abt 802.11 I have a question plx help During Association in 802.11 the capabilities are matched from Association request and response and then further intersection of ...
0
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0answers
17 views
0
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0answers
12 views

When I turnoff wifi in my phone what exactly happens deauthentication or diassocation? [closed]

I am a beginner in wifi and have started reading it.. I have a question When I turnoff wifi in my phone what exactly happens deauthentication or diassocation? I am unable to differentiate..Plz help
0
votes
2answers
37 views

List of frequencies that a device can connect to over 2.4 and 5 GHz channels

When connecting to a Wifi on 2.4GHz or 5GHz channel, a device connects on a certain frequency. Is there a somewhere list of all possible frequencies that a device can connect to on a 2.4GHz/5GHz ...
0
votes
1answer
17 views

QSFP to 4 x SFP+ breakout not working in HP Procurve 3500yl J8693A

I have bought a Netronome Agilio CX smartNIC which has QSFP interface. My switch HP 3500yl J8593A has 4xSFP+ interfaces. I bought Amphenol QSFP to 4xSFP+ breakout DAC. But the switch complained about &...
0
votes
2answers
52 views

Can I use CAT6e on a CAT6 Patch panel?

I have a customer that is set on using CAT6e cables throughout his building. My job is to terminate the ends into patch panels. Can't really find any info if CAT6e will get the full 10GBPS at 100 ...
-2
votes
1answer
29 views

The network monitoring paradox: The watchman watching theirself watch theirself watching theirself [closed]

Suppose we set up a public server, and we want to know exactly what happens with it. We set up a monitoring policy such that every incoming and outgoing packet is logged and saved to disk with a tool ...
0
votes
1answer
22 views

BGP Authentication Key-Chain Between Cisco IOS XE L3 Switch (c9300-24S) and Juniper MX480 Router

Need to create a BGP authentication keychain between Cisco and Juniper devices. Need assistance with config commands for Cisco 9300-24S.
0
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0answers
16 views

Dynamic NAT/PAT problem on a Cisco ISR router [closed]

I am currently having an issue where I configured Dynamic NAT with one public IP in a pool. I intended to have the entire subnet use this one public IP instead of the default NAT outside IP configured ...

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