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6 views

Archer C2 router forwards one port and blocks another

tl;dr: I have the same port forwarding configuration for two separate services on a single device attached to my TP-Link Archer C2 router. Both services are accessible internally, but only first one ...
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0answers
10 views

Is it possible to turn my home connection into a proxy? (Without access to modem) [closed]

So I have port forwarded my home ip and connected with ssh. This ssh connection was converted into a socks5 proxy. I was able to do this from outside my network, anywhere. I want to have this same ...
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0answers
11 views

How can I view traffic from a Android or iOS device to a IoT device?

I need to troubleshoot/debug some data being sent from an Android and/or iPhone to an IoT device using 802.11n w/WPA2. I've proxied traffic from a mobile phone to a web server exposed to the public ...
-1
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0answers
11 views

what does theses line mean? [closed]

13:43:12.565287 PPPoE [ses 0x2a0] IP 43-96-35-72.mtaonline.net.36134 > 104.200.154.27.http-alt: UDP, length 1422 13:43:12.566143 PPPoE [ses 0x2a0] IP 43-96-35-72.mtaonline.net.36134 > 104.200.154.27....
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1answer
16 views

Link utilization

I have a topology below (two switches S1 and S2), each interface has two metrics (ifinutilization and ifoututilization). %ifinutilization = ( (ifinoctets * 8) * 100 ) / ifspeed %ifoututilization =...
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1answer
19 views

What's the recommended book to learn computer networking? [closed]

Can you give me a list of Computer Networking books that is a beginner to novice friendly? Where I can learn the fundamentals without wasting time or bore me with jargon.
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2answers
23 views

Relationship between full duplex and speed

Full-duplex data transmission means that data can be transmitted in both directions on a signal carrier at the same time. but my question is if we have an interface with 100Mb speed and full-duplex ...
0
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0answers
9 views

What is the proper way to configure static IP allocations on a MikroTik using an IKEv2 IPSec VPN? [closed]

I currently have a MikroTik router at my network's edge doing double duty as a VPN concentrator. The onboard OS has support for IPSec using IKEv2, and it performs well at this task. The problem I'm ...
0
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0answers
7 views

SSH tunnel over VPN [closed]

First off, I realise this might not be the right site to post this. If so, please feel free to close (and hopefully point me in the right direction?) On MacOS, I am using a VPN software which, like ...
0
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0answers
13 views

How to setup split tunnelling for all network traffic? [closed]

I have a work issued Macbook and Cisco Virtual Office router. The image shows my current network setup. Cisco Virtual Office (Virtual Office Router in the image) broadcasts a WiFi network that allows ...
0
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2answers
30 views

IfInDiscards and IfOutDiscards counters

Could someone tell me what do ifinDiscards (.1.3.6.1.2.1.2.2.1.13) and ifOutDiscards (.1.3.6.1.2.1.2.2.1.14) exactly mean? Thanks.
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1answer
24 views

Will Main Router be overloaded in this scenario?

The Main router in my planned office network assigns IP addresses to all PCs through DHCP and also connects to the internet via GPON modem. 5 PCs and 1 server are connected to a 8 Port simple switch. ...
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0answers
14 views

Bond 2 ISP's connections together to double bandwidth to remote Linux server [closed]

2 distinct internet connections of the same speed I've got 2 distinct fibre lines from 2 distinct ISP's. Both have the same download bandwidth, and both have the same upload bandwidth. However the ...
0
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0answers
14 views

How can I put a WiFi client and an Ethernet client to the same group? [closed]

I have wireless interface wl0 and ethernet interfaces eth0, eth1, eth2, eth3 all in the same bridge br0. Now I have to put one of the wifi clients and one ethernet client to the same group so that ...
0
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1answer
7 views

How to use VIRL Connect Tool

I have just installed VIRL 1.6 today. I am a first time user. Can someone please tell me how to have granular control over the connect tool. I am trying to create a simple lab and when I try to create ...
1
vote
1answer
32 views

How a wireless access point reads all the available SSIDs

When a wireless access point is broadcasting its SSID (beacon frame) I assume it sends it on specific selected channel (channel 1-14 for 2.4 GHz network). But how do all the other access point ...
0
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0answers
18 views

How does advertising a route using EIGRP break connectivity? [closed]

My question is really two parts. How does advertising a route on EIGRP break connectivity to a site and how does one begin to troubleshoot something like that. To provide from context, I'm not Cisco ...
1
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0answers
26 views

PVLANs/Port isolation in IPv6 networks

We're currently using port isolation to prevent communication between computers on the same vlan and use client isolation on our guest wifi. The reason for having this enabled is to prevent unwanted ...
0
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0answers
16 views

latency in the network layer and transport layer [duplicate]

We have several way to measure latency (ping command (ICMP packets), hping(TCP SYN), iperf..).What is the difference between measuring the latency in the network layer and measuring in the transport ...
0
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0answers
16 views

How does a router know which IP's are available in a LAN network with multiple wireless routers [closed]

Suppose I have three wireless home routers connected with each other through LAN ports like this, router 1 LAN port to Router 2 lan port, router 2 lan port to router 3 lan port. Then lets say router ...
0
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0answers
10 views

TLS handshake performed for every send [closed]

I have a legacy application which uses WinInet library to connect to server. It connects using TLS 1.2. However I am seeing a strange behavior that for every send request from my client, TLS handshake ...
0
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0answers
12 views

How to do auto tunneling or auto port forwarding for an app over a router? [closed]

The question is very clear. Just how to let an app to communicate with other apps on WAN by crossing the router. Tunneling is good for fixed back and forth communication but not good for one way from ...
0
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1answer
29 views

2 machines can have the same link-local address, in the correct context. What context?

I don't get in what context multiple interfaces/machines can have the same link-local address. Thanks in advance.
0
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2answers
33 views

redundant option in DHCP

RFC 2132 defines both subnet mask and broadcast address option. Why there is a Broadcast Address Option (28) in dhcp protocol, when it can be calculated by a client, using subnet mask and ip address?
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3answers
52 views

Analyzing TCP connection by running Wireshark in two endpoint

I am trying to find the number of lost packets in the network. I have 2 devices say DeviceA and DeviceB. IP addresses are respectively DeviceA : 192.168.0.104 and DeviceB: 192.168.0.105. In order ...
0
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3answers
45 views

Estimate latency between two IP addresses

I would like to estimate what is the latency in sending a packet between two IP addresses. Let's assume that I have two IP addresses: ip1 and ip2. I can easily ping both ip1 and ip2, and the ping ...
0
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0answers
22 views

What Invariants/guarantees do various layers of the OSI model provide? [duplicate]

I saw it stated in an answer to this other question What transmission service gurantees does Ethernet give? that every layer of the OSI model provides both "hard" and "soft" guarantees to the layer ...
0
votes
1answer
46 views

What will be the behaviour of TCP in a case when application layer is changed to send small packets

Assume I have an application layer protocol that segments the packet itself. So if it has 100 MBytes of data, then it will divide the data into 10000 segments and send each segment individually to TCP....
0
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1answer
23 views

Which are the best way to implement a gateway with custom rules? [closed]

I'm not so sure I will use the best words to explain what I need. I would like to use a raspberry pi at home to manage the outbound traffic, proxing some of the requests made from the network based ...
0
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1answer
52 views

Pros and cons of using VPLS instead of using MPLS alone

What are the pros and cons of using VPLS instead of MPLS alone? What are the typical cases where VPLS is used?
0
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0answers
13 views

Which mask to use for 1024 address size subnet [duplicate]

I am trying to identify if given IPs are from same 1024 SUBNET. 192.168.3.1 192.168.2.19 192.168.1.1 The part I got stuck is that SUBNET address size is 1024. If I am sure, by checking IP addresses ...
0
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0answers
13 views

Connect two local networks [closed]

I'm trying to connect two local networks together. 2 networks scenario (this image shows current config) Network 1 (192.168.1.1) is connected to 10GBe Internet via router with dhcp. I've added switch ...
0
votes
1answer
22 views

Two sites with public IP's in same subnet. Spoof detection

I have encountered an non standard issue and can't seem to figure out a way to get it to work. I have 2 sites, 1 main and one branch. At the main site I have 2 ISP's and the branch I have only 1 ISP....
-1
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0answers
20 views

Allied Telesis “no switchport” Cisco command [closed]

I am trying to use an Allied Telesis L3 Switch to route multiple vlans. I used to run the "no switchport" command on a L3 Cisco switch to make the interface Layer 3 capable. Whenever I run the "no ...
0
votes
2answers
30 views

Tx and Rx network metrics

Rx means Receive, and Tx means Transmit. I need to know how can i calculate link utilization (Bandwidth utilization) from these metrics ?, do i need to average them or getting maximum ?
0
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0answers
14 views

Router to router via DMZ [closed]

I have one router that has the connection to the internet. This router is very limited in its functionality (I can't set custom DNS addresses or point to another DHCP server). Can I point this router ...
0
votes
1answer
14 views

Ping time varies between two devices in the same LAN [closed]

I am trying to ping between two devices A [Server] and B[Router]. From A to B the average ping response is about 1ms and from B to A is 0.5ms which is half. As a result, if I scp a file to B, by ...
0
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0answers
12 views

“tracert” to google.com shows number of failures in between - Testing from my home - I use comcast [closed]

Using windows 10, I was just curious & tried "tracert google.com" After 15 hops it shows "Request timed out" for the next 11 hops. And then on the 27th hop it shows google.com's IPV6. Below is ...
0
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0answers
10 views

Windows can't use bind DNS from other PC [closed]

I am trying to host a bind dns server inside of a docker container in a docker-machine. The docker-machine behaves like it's an own PC, so it has its own IP, which I can ping from my PC. I have setup ...
0
votes
0answers
7 views

OpenVPN Access Server on AWS EC2 keeps returning to login page [closed]

I've installed OpenVPN Access Server using these steps: (Source: https://openvpn.net/vpn-software-packages/) apt update && apt -y install ca-certificates wget net-tools wget -qO - https://as-...
1
vote
1answer
24 views

Sonicwall: force all traffic from specific source through VPN

We have a main office (M) with a Sonicwall TZ215, and a branch office (B) with a TZ210. Computers in B access the server in M through a site-to-site VPN between the two Sonicwalls. Internet traffic ...
0
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2answers
70 views

What does the BGP protocol consider when determining the best path?

What does BGP protocol consider when determining the best path? Why is it considered the slower than interior routing protocols like RIP, OSPF, etc?
0
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2answers
37 views

What does a VPN Tunnel offers other than encryption?

A VPN tunnel is end to end encrypted. But does it gurantee to provide features other than encryption, such as low latency, low jitter etc?
0
votes
0answers
18 views

Is it possible to access 127.0.0.xxx in anyway [closed]

So I've been configuring my network at work. We've got a lot of devices from NAS servers to Dante AoIP devices. While configuring some of my devices I managed to set the IP adress of one device to ...
2
votes
2answers
40 views

MPLS : who owns the ingress & egress routers?

I'm trying to understand MPLS. It states that the routing doesn't happen at each router, and it starts with a "Label Edge Router". For example, if company X uses ATT as the provider for MPLS, then ...
0
votes
0answers
19 views

Give the 36th subnet for given network [duplicate]

Given network is: 148.47.0.0/16, give the 36th subnet where you can uniquely address 54 hosts. Where to start? Thanks in advance.
0
votes
0answers
9 views

Can two satellite internet clients directly communicate by IP over a satellite internet connection? [closed]

I've been wanting to make a long range drone for a pet project and I'd like it to have a satellite internet connection for control and basic network input/output. Using a satellite internet service is ...
0
votes
2answers
46 views

Typical LANs with VLANs

When using switches which support VLANs with switches which doesn't support VLANs, can they be mixed with each other in the same network?
0
votes
0answers
12 views

Replacing FIOS rental router [closed]

I have a bundle TV+Internet FiOS Service from Verizon. FIOS cable (basement) -> ONT (basement) -> FiOS Quantum Gateway Router (other side of the house) I want to accomplish a few things: ...
0
votes
1answer
22 views

How MPLS solve the fragmentation problem?

MPLS appends a label for any packet enters its network. If a packet is equal to the maximum packet size, then packet may get fragmented after appending the label. How does MPLS solve this problem?

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