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Some of our users are unable to access our website hosted on Azure App Service [closed]

We recently started receiving reports of some of our users being unable to access our website hosted on an Azure App Service. When they attempt to access the site they see a browser error indicating ...
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0answers
7 views

Why such wide variance in LAN ping times to a nearby uncontested Wifi AP? [closed]

I'm seeing unexpectedly high ping times to a private WiFi AP device on a small office network. If I ping the WiFi AP directly for a few minutes, I see most pings return with <3ms, some around 10-...
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2answers
11 views

Does Port Forwarding limit ports available to NAPT?

I'm wondering if routers limit the possible ports available to NAPT when port forwarding is configured. For example, given one public IP address all but two ports assigned via port forwarding, would ...
0
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0answers
7 views

All devices can ping only themselves and the router (lan) [closed]

When i try to ping any devices in my lan network, i get this output : ping 192.168.1.104 PING 192.168.1.104 (192.168.1.104) 56(84) bytes of data. From 192.168.1.108 icmp_seq=1 Destination Host ...
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0answers
8 views

TCP/IP, MTU, DHCP question [closed]

In the example network below, how would I determine the maximum number of IP addresses that can be allocated by the DHCP to user terminals in each of the subnets? Also, how long would it take to ...
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0answers
13 views

using pfsense and Netgate 2100 max: can I prevent uploading files to the internet/browser? [closed]

Using pfsense and Netgate 2100 Max, I want to prevent upload files to the browser, can I do that? I searched the internet found something about limiting up the speed only but can that be the solution?
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0answers
10 views

OPNsense inter-vlan routing throughput [closed]

m I am running a Protectli unit (FW6B) running OPNsense. The firewall is not set up for trunking at this time so each port on the unit is connected to a managed switch that manages the vlans. Port 1 ...
0
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0answers
12 views

SFP, standard EEPROM? [duplicate]

I have a SFP compatible module which has an I2C interface. I understand that SFP is a pseudo-standard but I can't find any documentation on the I2C interface and what registers in the EEPROM do what. ...
0
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0answers
21 views

When a bus network looks like a star network but operates like a bus network? [closed]

I was reading through questions, and I saw this question. Firstly I thought it must be tree network, since it is a hybrid of bus and star network,but I am not sure. I think question is a little ...
0
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0answers
21 views

How ip info websites work? [closed]

I use service like ipinfo.io and I am interested in that where they collect data like these ip: "64.233.165.113" hostname: "lg-in-f113.1e100.net" city: "Helsinki" ...
2
votes
1answer
27 views

Using PT and EtherChannels along with STP

I'm very new to all of this but I am trying to create a network topology as practice that uses three etherchannels across three switches and then rely on STP to block one. So far it was working well. ...
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0answers
14 views

Using a DMZ switch with VLAN capabilities ...? [closed]

My goal is pretty simple: I want to build a DMZ to implement network security for use on small businesses - not in a large-scale enterprise environment. I'm thinking honeypots and other configurations ...
1
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0answers
14 views

How do I resolve an intermediate registration error on cisco EEM?

I'm testing adding a new EEM policy in a cisco IOS-XR router to send information caught through SNMP to syslog. Right now, I'm not able to register the policy, and when I try to commit, I get the ...
0
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1answer
29 views

Connect a router to multiple router/subnet - Cisco Packet Tracer

I'm studying DNS Server. So I try this. Here is the flow when I request abc.com webpage from My PC. My PC (192.0.1.2) send DNS query to Router0. Router0 then forwarding to DNS Nameserver (10.0.0.2). ...
14
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3answers
2k views

How come SFP modules are so incompatible?

In theory I like the SFP concept very much. However what strikes me is the manufacturer restrictions for every switch/card. How come different SFP modules work with different vendors only? Is there a ...
1
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0answers
18 views

How to view or change OSPF LSA max-age time in Cisco IOS?

Is there any way of viewing or changing OSPF LSA Max-Age time in Cisco IOS?
0
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0answers
12 views

How to remotely access my home VPN internet connection [closed]

I'm living in a country where the internet is fast but highly censored. I've set up a VPN server based in the US, but I'm only able to receive a reasonably fast stream of data from it on my home ...
-1
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0answers
10 views

conntrack events(conntrack -E) show 0.0.0.0 as source and destination addresses [closed]

These are the logs down below. [DESTROY] udp 17 src=0.0.0.0 dst=0.0.0.0 sport=0 dport=0 packets=3 bytes=216 [UNREPLIED] src=0.0.0.0 dst=0.0.0.0 sport=0 dport=0 packets=0 bytes=0 [NEW] udp ...
1
vote
1answer
20 views

What "IVI" from "IVI Translation" stands for?

In several documents in the context of IPv4/IPv6 transition I see these three letters "IVI" that seems to be an acronym, but I was unable to find what it means or suppose to refer. Maybe is ...
0
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0answers
12 views

Using a local DNS server while connected to a VPN on a windows PC [closed]

I have a home network with most devices running NordVPN. I have a raspberry pi acting as a mini home server - and have just started using Pi-Hole a DNS program that points various tracking and ...
0
votes
1answer
25 views

Switching Internet connection on Cisco ASA

I use Cisco ASA in branches of our organization. Each device has an IPsec tunnel that connects to the main office. To access the global network each device also has a NAT. Recently, a task arose to ...
3
votes
2answers
404 views

Mobile cellular Networks (GSM, LTE, 5G, ...) and MAC addresses

We've been provided with a new firmware for our telematics units, which connects to the Internet via a VPN provided by a mobile carrier; since this new firmware release, we've noticed that each and ...
0
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0answers
18 views

openvpn-client in docker container port forward from openvpn-server not working [closed]

I have set-up a port forwarding at my VPN provider like: VPN_EXT_IP:60000 --> VPN_INT_CLIENT_IP:60000 I have a docker-compose which looks something like: version: "3.5" networks: ext: ...
0
votes
1answer
17 views

Tcpdump doesn't capture WLAN-to-WLAN traffic [closed]

I have configured a transparent bridge on a network that should capture all the traffic of its connected devices with tcpdump. The bridge is configured on a Debian 11 server and has an uplink (eno1) ...
1
vote
2answers
49 views

How are IP address compared to the default 0.0.0.0/0 or ::/0 on binary level?

Let's say I have an ipv4 destination address - 63.168.52.12 In binary format the address: 00111111.10101000.00110100.00001100 The default route in binary is 00000000.00000000.00000000.00000000 I am ...
0
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0answers
8 views

Uneven traffic by different path [closed]

I'm having a technical difficulty and I hope I can count on your experience. I have an IPsec VPN client (Remote Access) that works great. However, I have a Home Office user. Through his local internet ...
0
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0answers
8 views

Receiving packets that are not intended to be forwarded to me! [closed]

I have a LAN with multiple clients. When running Wireshark on client A, I sometimes receive TCP packets with the source IP and MAC address of client B and the destination IP and MAC address of client ...
0
votes
1answer
38 views

Can a host not send a response to an ARP request to remain hidden?

Let's say a malicious host connects to a network. It doesn't wish to identify itself to other devices on the network unless it wants to (eg: for a desired conversation). From what I understand, the ...
0
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0answers
12 views

Duplicated HTTP Get call on wireshark we did not trigger [closed]

This is written by software developer and not network engineer, so sorry if too newbie. We execute HTTP GET from client to server. The URL/endpoint is with hostname/FQDN. Used both Wireshark/Process ...
0
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0answers
13 views

Two router connected on ethernet ports [closed]

I have a network with two router where everything works but, from what I’ve read, should not Situation. I have been using a modem/router (router B) on ADSL circuit and my have ISP sent me new modem/...
0
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0answers
21 views

Load balancing: how to find fastest route to a user [closed]

I’m thinking about it like a week. Consider that we have a load balancer server, and two storage servers, X and Y. A user connects to load balancer. Load balancer should decide which of that two ...
0
votes
1answer
45 views

Total delay of virtual circuit switching? [closed]

We know that virtual circuit switching(VCS) has both features of circuit switching and datagram switching. It uses connection oriented path but may or may not dedicated that means resources may or may ...
0
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0answers
15 views

How do computers read FFFFF Mac adress and respond to a switch? [closed]

I'm really confused and I'm hoping that someone is gonna clarify this for me. let's say we have 3 pc connected to a switch : Pc1 then sw1{switch1} and the other two pcs pc2 pc3.If pc1 wants to send an ...
-1
votes
1answer
25 views

802.11 Protocol on Different Frequency [closed]

Wifi (and the 802.11 protocol) takes place on 2.4Ghz and 5Ghz frequencies. Is it possible to recreate this protocol on a different frequency (say 500Mhz) and create a functional network using a modded ...
0
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0answers
18 views

Is it possible to have a VPN always on for all traffic, and require a password to unlock it? [closed]

My young cousin wants a smartphone (obviously) and I've been asked to help with the rollout. I have their family on a super simple Tailscale network already, which they use to drop files and chat (...
0
votes
2answers
42 views

Pins #6 and #8 of my CAT6 ethernet cable are broken. Should I replace the entire cable or is it usable?

I wired up a ~40m long CAT6 cable following T568B pinout. According to my tester, pins #6 and #8 are not functional. I have re-wired both ends several times to make sure it's not my poor crimping; ...
0
votes
0answers
16 views

How to export a device configuaration in Gns3

I have A Gns3 topology and i try to save my configurations to a txt file in my desktop. I tried the [Tools] > [Import/Export node config] in the menu,[Export configs to a directory] but it only ...
0
votes
1answer
19 views

Error cluster with packets balacing through NAT

Im trying to make a web cluster (HTTP and FTP) with 3 linux machines where the packets are balanced through NAT and im using Bridge interfaces and HSRP, because im using 2 routers(using c3660 image) ...
2
votes
0answers
33 views

Designing Workaround for Missing IPv6 Support (OSPF or BGP)

We have a pair of Ruckus (Brocade) ICX 7750s that we use as our core routers. They currently handle a BGP connection with our ISP and then use OSPF for internal routes. Our ISP is finally going to ...
0
votes
1answer
62 views

pathping command 100% packet loss

image 1 image 2 this is the real example of pathping command. According to my knowledge:- Source to here column :- it tells about number of packet loss out of 100 send directly to hop Node/Link ...
0
votes
0answers
14 views

5G: Mapping QoS flow to a DRB requiring out-of-order delivery

I understand that 5GNR allows out-of-order delivery for some DRBs by configuring them as such. Also, I understand that a QoS Flow is mapped by SDAP to a DRB based on QoS parameters provided from the ...
0
votes
1answer
56 views

What are the possible bottlenecks in this design?

I am currently finding myself in a position where I need to design a local network for parallel processing of large amounts of data from multiple sources. Unfortunately I lack the experience to ...
0
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0answers
42 views

TRex Warning : number of rx packets exceeds 101% of tx packets!

+------------+ | | +------------| tester |<-------------+ | | | | | ...
0
votes
2answers
49 views

What is the use of SNAT (Static Network Address Translation)?

If SNAT is used to map internal private IP addresses directly to a non-changing public IP address, why not simply assign the public IP addresses directly to each host itself? What advantage dose SNAT ...
0
votes
2answers
92 views

Could we use private IP address as directed broadcast address?

We know that private IP addresses ranges of class A, class B, class C are 10.0.0.0-10.0.0.255, 172.16.0.0-172.16.255.255, 192.168.0.0-192.168.255.255 respectively. My first questions is that first and ...
0
votes
0answers
18 views

Is it OK to connect 3 switches in this fashion Switch 1 <-> Switch 3 , Switch 2 <-> Switch 3, Switch 1 <-> Switch 2 [duplicate]

Does anybody see any networking issue of connecting 3 switches the following way? Does this cause any inherent networking issue with this like loop issues? Switch 1 <-> Switch 3 Switch 2 <-&...
0
votes
1answer
33 views

Question about private ip address and public ip address

Let say a company bought a range of ip 172.16.1.0/24 , my question is this range of ip is public or private? and another question why the company not using private ip address to subnet and use NAT to ...
2
votes
1answer
88 views

Arista 7050 Ipv6 problem

I have 2x Arista 7050S in MLAG configuration and I configured IPv6 on them, IPv6 unicast routing is enabled, and I assigned 2aXX:XX:1::100/120 to interface vlan 80 and here is the interface vlan ...
0
votes
0answers
15 views

How does a host use its default gateway? [duplicate]

Each host has its own default gateway and uses that to send packets outside of its network. But in each packet, there is only 1 header field for the destination IP address. So, how can that host send ...
0
votes
2answers
60 views

Sharing one VLAN with two routers each one will route different subnet

We are transitioning to new WAN connectivity. I have one VLAN (let's say ID 10). Currently there is one router R1 that has one private subnet and one public subnet on the VLAN 10 which goes through ...

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