All Questions

Filter by
Sorted by
Tagged with
0
votes
2answers
11 views

Does a per-device firewall configuration standard exist or is in the process of being specified?

this is not a question about how to accomplish this, but whether it exists. First, let me please motivate the question. With IoT on the rise and most devices, I feel like that in at most in a few ...
-1
votes
0answers
9 views

Port unreachable trying to stream UDP movie with VLC (MacBook to iPhone) [on hold]

I am trying to stream a movie with VLC from my MacBook (192.168.178.23) to my iPhone (192.168.178.26) within my local network with UDP on the port 1234. So I open the streaming window and enter the IP ...
-1
votes
0answers
5 views

why i can't ping my public ip?

i bought a DSL internet connection from an ISP. everythings fine, but i wonder why i can't ping my public ip! i go to the site https://www.whatismyip.com/ and it show my ip as: Your Public IPv4 is: 48....
0
votes
2answers
24 views

What does the Cisco HTTP client (help to) do on a switch?

While checking for vulnerabilities in one of our Cisco switches I came upon this: CVE-2019-12665. Excerpt from the CVE: A vulnerability in the HTTP client feature of Cisco IOS and IOS XE Software ...
0
votes
1answer
22 views

Cisco Nexus 9410 - Using Default Gateway versus ARPing for locally connected host

I may be missing something extremely simple here, but im at loss trying to figure out what this Nexus switch is doing. Here is the topology: Note: I'm expecting people to ask why this route exists: ...
0
votes
0answers
20 views

Subnetting & Routing Path [on hold]

I'm trying to learn subnetting and working on a quiz but I'm going wrong somewhere. The prompt gives a source IP and a destination IP. There are 6 other IPs that I need to choose in the correct ...
0
votes
1answer
14 views

Is it possible to use two VPNs at the same time? [on hold]

I have a private VPN for general purposes which I need to bypass some firewall rules. I also have the VPN for hackthebox which uses an OpenVPN connection. I want to have both on so I can keep ...
0
votes
0answers
7 views

Network capture toolset that store a buffer and saves on a trigger [on hold]

Is there a simple tool set I can use to buffer a network capture for say the last 3 minutes and if an event happens perhaps by a GPIO trigger or UDP message I write the last 3 minutes and the ...
0
votes
1answer
20 views

IPSec point to point Cisco 2800 to Palo Alto firewall

Is there a way to use a cisco 2800 router to create a point-point tunnel to a Palo alto 3020 firewall with support for 6 vlan's on the cisco side. I want to create a tunnel from a new office to my HQ ...
0
votes
0answers
13 views

Can one access data generated in a Wi-Fi network from the modem? [on hold]

I find this question is best phrased with a scenario, so here goes nothing. Scenario Tom owns a modem and a router, and gets internet service from Comcast. Tom uses his router to broadcast his own ...
0
votes
0answers
13 views

Detecting totally silent device in LAN [on hold]

I have a network device in my LAN, which behaves totally strange for my understanding. It got the IP 192.168.178.51 and it is a Panasonic CT-TAW1 (google search link) which is a WiFi/LAN module for a ...
0
votes
1answer
28 views

ports and security

I'm thinking about how the "port" operates for the network connections and tried reading the CCNA cert. guide to understand the details, however, I need to clarify doubts: does occupying all the TCP/...
0
votes
0answers
13 views

What's typical in terms of reliability for fully wired Ethernet LAN for normal, non-outage, non-overload conditions? [on hold]

Can anyone point me to industry guidance of any kind for expected LAN reliability for normal, non-outage, non-overload conditions? I suspect some device is blocking or throttling my connections. I ...
0
votes
1answer
29 views

SSID active but not connecting to internet [on hold]

I have a modem which is connected to a 24 port Ethernet switch, which intern is connected to a wifi router on different level of the building. It was working fine yesterday but I need to have ...
0
votes
1answer
19 views

Finding MSS for a remote connection that uses tunnelling

I'm working on a codebase where we're trying to test network health by verifying if we can ping the remote site having payload = MSS without any packet fragmentation (using -df flag). Typically, for ...
0
votes
0answers
21 views

IPTables redirection works only from outside [on hold]

so, I created a kubernetes cluster using virtualbox on a dedicated server with a public ip (ex: 65.12.12.12). This cluster has an internal network, based on subnet 192.168.205.0/24 and, for example, ...
0
votes
1answer
44 views

What is a substrate network?

Actually I am reading a paper for school homework. This paper is called : "JASPER: Joint Optimization of Scaling, Placement, and Routing of Virtual Network Services". They use the term "substrate ...
0
votes
0answers
6 views

Connecting Render Farm to local network [on hold]

New to networking so...Looking to see if this is possible...It's also not an ideal setup so if you have recommendations on better hardware/software, I'm open. I have a render farm with 23 computers, ...
0
votes
1answer
28 views

What kind of ports are these? [on hold]

I recently moved into a new apartment and found a connection box, but I don't know what kind of ports these are or what they are used for. My best guess would be some kind of fiber. Neither the ...
0
votes
0answers
6 views

How to connect Github webhooks to local CI/CD server without using ngrok? [on hold]

I have a local Jenkins server that I only need once a week. It is not worth hosting it on a local server (due to infrequent commits). I have some github webhooks that I use to trigger builds in that ...
0
votes
3answers
57 views

Access a pc web service with different ip/mask in on-site network

I tried to get a setup working to make the following scenario work: Access a pc web service hosted in a different IP range/mask than the rest on-site PCs. Details: We have a network setup with a ...
0
votes
0answers
9 views

Cannot Change MTU size after few values [on hold]

I'm trying to change the value of MTU to test network fragmentation, OS : Windows 10 Pro When i try to lower it it says The parameter is incorrect C:\WINDOWS\system32>netsh interface ipv4 set ...
0
votes
0answers
23 views

Dropped large packets with VMWare [on hold]

We have a strange issue in our network. We saw it the first time when we wanted to restore SQL databases to a test DB. The restore failed, in the windows log we saw iSCSI errors, the mounted iSCSI ...
0
votes
0answers
12 views

Control cameras using PTP protocol [on hold]

I'm having issues setting up an ubuntu machine to control four computer vision cameras using a PTP protocol. Instructions for the camera I currently have access to a 4-port intel i350 based network ...
0
votes
3answers
42 views

Connecting 2 buildings on same site via fiber

If I have 2 buildings on the same site, connected to each other via a fiber connection and they both run to the same ISP, would both buildings need to be connected to a firewall? For the main ...
0
votes
0answers
5 views

Answering proberequests on nodemcu [on hold]

so I am trying to answer proberequests with my nodemcu, like a Wifi Pineapple does, but I don't know how. I would preferable do it in Arduino. Does any one know how to?
0
votes
0answers
13 views

How broad are the applications of proxy caching? [on hold]

I'd like to learn more about the applications of proxy caching. But I feel that the vast majority of online articles only explain it in the HTTP context. I'm looking for examples of applications ...
0
votes
1answer
31 views

How can I connect (stack) two Cisco SG350 together?

I am building a storage network, physically separated from the data network. I have two Cisco SG350-28P-K9 V02 switches: One on the basement. Has two NAS, two ESX servers. (in use) One on the 4th ...
1
vote
1answer
17 views

Arpping responding with Cisco ASA interface mac address and mac address of machine

For some reason our Cisco is responding to arp requests between machines on the same switch. It's not breaking anything but it is slowing initial connections. I've been making a lot of changes on the ...
0
votes
0answers
16 views

Calculate propagation delay for CSMA/CD [on hold]

Hi I have some trouble with this homework assignement. According to my calculation the maximum wire length would be 322 meters going by Transmission time => 2* Propagation time. Could someone confirm ...
0
votes
0answers
7 views

Windows 7 NTP is not working to synchronise [on hold]

I have a Windows 7 SP1 PC, but when I try to connect to an internal NTP Server, it failed to synchronize. With Windows 10 is working fine. Can anyone suggest why?
0
votes
0answers
38 views

Help Cat6 Keystone to RJ45 [on hold]

Trying to connect one room to the router. I have tried to use simple wiring - Cat6 with Keystone wall plate on one end I know that a lot dont advocate this setup but since I only have one room, I ...
0
votes
0answers
13 views

Hostname resolution on cisco packet tracer [on hold]

I was configuring hostname resolution with DNS server on cisco packet tracer. I created the records and assigned ip to them then I configured everything on Router with ip domain command but the ...
0
votes
0answers
15 views

What is the difference between Network as a Service (NaaS) and Cloud Computing? [on hold]

It's been said that Cloud Computing provides three service models: Software as a Service (SaaS), Platform as a Service (PaaS) and Infrastructure as a Service (IaaS). Now there is a fourth model, known ...
0
votes
1answer
31 views

how can we route two routers on one switch in a different network ip

I am trying to connect two routers in one switch to ping each other using IP route . router 0 has 192.168.10.1/24 gi0/0 router 1 has 192.168.20.1/24 gi0/0 I tried putting switch-port trunks on both ...
0
votes
0answers
48 views

why iperf3 UDP throughput is lower than the TCP throughput?

I'm running an iperf3 throughput test from my PC to another one, going through a router. I've tried the same configuration for TCP traffic and for UDP traffic. However, for UDP traffic, I get worse ...
0
votes
0answers
14 views

wireless device in a network IP address [on hold]

I am connected to the my wireless network via UBNT rocket M2. DHCP is configured in the network through which I am getting my IP. now i wanna know the IP of my access point (Rocket M2). any command/...
0
votes
0answers
16 views

The huawei S2300's interface protocol become `--`

The huawei S2300's interface protocol become --: <HW>dis interface brief *down: administratively down ...
1
vote
2answers
44 views

Not a four-way handshake in Cisco Packet Tracer?

TCP connection termination is performed by the four-way handshake, as shown below (the image is taken from here). I tried to verify it on Cisco Packet Tracer. With the following topology, I captured ...
0
votes
0answers
11 views

Display running process of computer in LordPE [on hold]

I don't know that can I ask question about this problem in here?.I tried download and install some version of LordPE,but when I open LordPE then no program that running displayed in LordPE I hope ...
-1
votes
0answers
8 views

Does an mDNS implementation store resolved addresses and for how long? [on hold]

I'm implementing device discovery over mDNS / Bonjour on both mobile platforms and I'm observing that discovery is not always reliable. I'm trying to investigate and I have questions where I cannot ...
0
votes
0answers
9 views

No internet when setting Always connect for VPN on Android [on hold]

I am facing a problem when creating a VPN connection on an android device 9.0 using L2TP/IPSec PSK. The problem is when I set the DNS Server along with the Forwarding Routes everything works fine I.E. ...
0
votes
0answers
30 views

Applying DSCP to an interface

I'm trying to apply DSCP (AF41) to an interface eth-trunk (if it matters) - [~HUAWEI] diffserv domain QoS \ creating diffserv domain named QoS [~HUAWEI] dsdomain QoS] ip-dscp-outbound af4 ...
0
votes
0answers
11 views

SSH tunneling error [on hold]

I'm trying basic thing to do but I get error "Connection refused.". I don't where to go now. Where did I do a mistake? Depicted example: I have main Server master(My current PC) and want to do ...
0
votes
1answer
42 views

Cisco 3750: SNMP

On my Cisco 3750G, i have SNMPV3 enabled, this is working perfectly with Zabbix. I would like to separate production flows from supervision flows, Do you know if it's possible to enable SNMP ...
0
votes
1answer
22 views

Is it possible to query interface statistics bytes by given start time to end time in Juniper Device?

I can query a interface detail: admin@Juniper-EX# run show interfaces ge-0/0/1 detail Physical interface: ge-0/0/1, Enabled, Physical link is Down Interface index: 131, SNMP ifIndex: 504, ...
0
votes
0answers
15 views

CISCO Packet Tracer

Does Cisco Packet Tracer support config memory and config network command? If no, then do enterprise routers still support it?
0
votes
0answers
21 views

Different switches showing different speeds? [closed]

I am not network engineer. I have this problem in my home network. When I connect the cable to Linksys 2800SE switch the led indicator shows 1Gbps speed. If I connect the same cable to D-Link DGS ...
0
votes
0answers
13 views

Issue disabling DHCP and preserving Internet connection [closed]

I have a problem with the router ASUS DSL-N16. Actually I want to pre-assign and IP to each device I have using the MAC of each device, no problem with this step. Now I put the IPv4, DNS and submask ...
0
votes
0answers
20 views

CARP / VRRP problem in combination with media converters [closed]

I recently stumbled upon a problem concerning router redundancy when using CARP. I also expect this to be the same with VRRP after checking the concerning RFC 5798. Since this is a somewhat ...

15 30 50 per page