All Questions

Filter by
Sorted by
Tagged with
1
vote
1answer
17 views

How do computers send switches packets, if switches don't have IP or MAC addresses?

I am new to networking, so please excuse me if I am saying stupid stuff. From my understanding, PCs are sending packets to switches, which then decide which physical port to forward that packet to. ...
-1
votes
0answers
10 views

ISP identification [closed]

I have a crazy ISP id. Anywhere I post it appears. I cannot find anyone else with this kind of ISP id. Am I being watched? .2A00:23C4:B63A:1800:3C2B:5C5B:AADC:8F8C
0
votes
0answers
10 views

Lubuntu 18.04 can't SSH to Cisco Router: no matching key exchange method found. Their offer: diffie-hellman-group1-sha1

I'm not sure if this problem caused by Lubuntu or Cisco Router side. Lubuntu = 192.168.1.100 Cisco Router = 192.168.1.1 SSH from Lubuntu to Cisco Router user@linux:~$ ssh -V OpenSSH_7.6p1 Ubuntu-...
0
votes
0answers
7 views

Pulse Secure - docker network unavailable - workaround? [closed]

I use virtual machine (virtualbox, fedora) with Pulse Secure (VPN) to connect to my corporate network, but I also use docker containers on my VM. Unfortunately, VPN admins decided to block local ...
0
votes
0answers
6 views

Connect to Openvpn server through http proxy which has a dynamic ip [closed]

My openvpn client will have to pass through a http proxy server before connecting to the openvpn server. But the http proxy is on a dynamic ip. From this tutorial - https://openvpn.net/community-...
0
votes
0answers
9 views

AES Encryption/Router Configuration [closed]

I am not sure if this is the right place to ask this question, if it is not, let me know. I was looking for the AES encryption key used on my router for my WPA2-Personal connection. I looked at the ...
0
votes
1answer
13 views

Best ports to use for proprietary protocols that might get inspected/blocked by firewalls

We use software from Genesys that uses its own proprietary protocols (all TCP) and we often run into issues with customers firewalls. The ports we are using are 2000, 2200 and 3010 - I'm not sure ...
0
votes
0answers
15 views

Juniper MX80 as layer3 dhcp server

I have this config: set dynamic-profiles CLIENTS-IPoE interfaces demux0 unit "$junos-interface-unit" no-traps set dynamic-profiles CLIENTS-IPoE interfaces demux0 unit "$junos-interface-unit" proxy-...
0
votes
0answers
10 views

How can I get a CRL automatically on cisco ASA? Do I have to configure OCSP?

I need to get a CRL on cisco ASA without requesting a crl manually. Do I have to configure OSCP, or is there anything else to get a crl automatically?
0
votes
0answers
8 views

Connecting two UniFi Wireless Networks with a Point-to-Point Wireless Bridge or UniFi Wireless Uplink [closed]

I have a network with 3 existing Ubiquiti UniFi AP AC Pro's covering the inside of a large residence. The wish to extend that wireless network to an out-building on the same property approximately ...
0
votes
0answers
6 views

ipv6 can ping/traceroute to some routes but others not [closed]

My current VM provider is having issues with the IPv6 network, some hosts can be reached randomly but others always work, for example, the following are always reachable: ping6 hetzner.de ping6 ...
0
votes
0answers
6 views

Independent local and VPN wireless networks [closed]

I used to have a simple setup with two raspberry pi's, where the one in my house acts as a wireguard client with a wireless AP and forwards all traffic via a VPN to exit at the remote pi, like this (...
0
votes
0answers
26 views

Can MTU values be cached?

Why is the mtu value different in these two cases? Is it because it's cached? Isn't the mtu path discovery done each and every time we run a tracepath/traceroute or ping measurement? If not, where ...
0
votes
0answers
12 views

Tunnel VPN traffic via a jumpbox? [closed]

I would like to be able to send my VPN traffic via an EC2 box running in another country so it appears that I'm logging in from that country. Is it possible?
0
votes
1answer
28 views

Differences between BGP(routing protocols) and vpn mpls?

I am new to networking, so bear with me, 1-I wanted to clear my query: why do we need BGP or any routing protocols if we have vpn or wan technologies like mpls ? 2-Can't we just run bgp between two ...
0
votes
0answers
11 views

Making our DNS resolving / recursion more resilient and more private [closed]

We want to make our DNS resolving more resilient, independent and less susceptible to spying by tech giants/ISPs by setting up our own DNS recursor. The DNS infrastructure is known to be one of the ...
0
votes
0answers
14 views

What kind of internet service do I need to host a server? [closed]

What kind of internet service do I need to host a server at home? I am aware of few limitations by ISPs for normal internet users such as disallowing port forwarding on port 80, which would be needed ...
-1
votes
0answers
17 views

Python netmiko interactive session on Cisco IOS [closed]

This is simple Python code to get show hostname output in Cisco IOS. script.py from netmiko import ConnectHandler cisco_881 = { 'device_type': 'cisco_ios', 'host': 'host', 'username': ...
0
votes
0answers
11 views

Use Google login to create a private VPN [closed]

At my company, we use a VPN solution that works, but is quite tedious to administer (manually creating users, certficates, editing hosts files, etc). So I was wondering if there exists a VPN solution ...
0
votes
0answers
14 views

TCP connection closes instantly (without timeout) when I change my IP address through the windows network and sharing center [closed]

I have tcp connection to some tcp server on internet. Tcp client is a simple application that I have created which works on my computer. The problem is that when I change my ip address through the ...
0
votes
0answers
14 views

Finding file transfer overhead [closed]

If this is not the right thread for this question, please bear with me and suggest the better one. So basically I'm trying to setup an experiment to estimate a data transfer overhead through an ...
0
votes
0answers
11 views

IPv4 header length maximum size [closed]

The minimum header length is 20 bytes but in the datagram the IHL is only assigned 4 bits. Why it is like that?
0
votes
2answers
29 views

setting up a VLAN and joining 2 buildings through underground cabling

I am pretty much a newbie when it comes to networks so forgive me in advance if this question seems odd. So here's a situation I am trying to figure out. There's a company who operates in 2 adjacent ...
1
vote
1answer
27 views

IPv4 maximum datagram size

The IPv4 datagram consists of two parts:the header length and the payload. The maximum header size is 60 bytes and minimum is 20 bytes. The maximum size of the data can be 65515 bytes. So why the ...
0
votes
0answers
10 views

TCP throughtput [closed]

Suppose I am asked to send data segments 1-12. The 4th Data segment gets lost. How the throughput is calculated consider Round Trip Time is 10ms and Maximum Segment Size=512B
0
votes
0answers
5 views

What benefits does a non-persistent HTTP connection? [closed]

My Question is rather short. What benefits does a non-persistent HTTP connection. And on what conditions would someone implement it over persistent HTTP? Thanks
0
votes
2answers
22 views

Port cost relation to data rate capacity

Why is it that the allocated port costs lower for links with higher data rate capacity? Since a highter data rate capacity lowers the frame transmission timing, shouldn't it be more costly?
0
votes
0answers
11 views

Hide currently connected wireless connection info from installed applications (emulate wireless connection as Ethernet) [closed]

You are probably familiar with the privacy issue topic about Google's usage of wireless access point's name, MAC address and GPS data of devices connected to that wireless access point to determine ...
0
votes
0answers
13 views

Connect Ethernet Expansion Board to Router [closed]

I am somewhat unfamiliar with home networking but trying to set up my home's ethernet pre-wiring which originates from a control panel box in my garage. The control panel has a Leviton 1x6 Telephone/...
0
votes
1answer
21 views

Is it possible management IP address of ASA don't move to the new active ASA when failover happen?

I created a failover configuration on two ASA5545s. I set up, for example, 10.10.10.1 on the management interface of the primary ASA and 10.10.10.2 on the secondary ASA. I know when a failoever happen,...
-1
votes
0answers
16 views

Why does `curl <this machine's IP>` behave differently than `curl localhost`? [closed]

I have two Raspberry Pis on my network - let's call them Pi and Rho. I'm trying to set up port forwarding via ssh tunnel between them, such that an application can connect to a port on Rho and get ...
0
votes
0answers
8 views

Policy based routing: route one IP only trough VPN not working [closed]

I would like to route only one client trough VPN (Wireguard). Edgerouter is in switch mode, eth0 = uplink (192.168.1.239), client = eth4 with manual IP address 192.168.1.188. VPN connection/...
0
votes
0answers
12 views

TCP data reconstruction with Python? [closed]

Maybe that question has already been asked but I'm not finding any related topic. I'd like to sniff network packets on-the-go for a specific need. Much like Wireshark does with its "Packet reassembly"...
0
votes
0answers
12 views

Cannot resolve ARP for device on same wifi network [closed]

Here's a simplified network diagram: +--------------+ | Router | | 192.168.10.1 | | 192.168.5.1 | +-------+------+ | | +-------v--------+ +---------------+ | Switch ...
0
votes
0answers
8 views

Cisco Connect, Fiddler and Iphone Issue [closed]

I have Windows 10 where I installed Fiddler to capture the mobile traffic. I easily get mobile traffic by following this instruction at https://docs.telerik.com/fiddler/Configure-Fiddler/Tasks/...
0
votes
0answers
6 views

why torrent cloud dowloader like zbigz is much faster than downloading using torrent client on my own? [closed]

I wonder how torrent cloud downloader download much faster than downloading using torrent client? if the answer is that they have larger bandwidth so why my downloading speed is much slower than my ...
0
votes
0answers
16 views

Cisco SPA3xx/5xx microphone input loopback

Not entirely sure where to place this question. But since this StackExchange branch is pretty much the only with questions regarding Cisco IP phones, I might give it a try here. Feel free to suggest ...
0
votes
0answers
9 views

does my traffic go through ssl vpn while I am connecting to browser based vpn [closed]

due to the coronavirus, we started the work from home, so we connect to the company by SSL-VPN my question is what if I connected to this SSL-VPN and then I connected to browser-based VPN (like ...
0
votes
0answers
13 views

Steam P2P, SoftEther VPN and other issues when using a router in school network [closed]

I am currently living in my university dormitory. The school provides one LAN port per person, however there is no Wi-Fi access in the dorms, so the school allows us to use a wireless router on the ...
0
votes
0answers
9 views

Troubleshooting VPN connection with Wireshark by decrypting IPSec packets [closed]

I'm having troubling establishing a VPN connection to a specific network and I'm not the only one having issues. As per their instructions, I'm using the standard VPN client built in windows with pre-...
1
vote
1answer
25 views

ipv6: I can ping only 1 interface within same network even with static route

This is how I set up a static route. R1(conf): ipv6 route 2004:DB8:2233:23::/64 2001:DB8:1122:12::2 With this, I can ping to 2004:DB8:2233:23::2 (S2/2 on R2) but not to 2004:DB8:2233:23::3 (S2/2 on ...
1
vote
1answer
26 views

I Cannot Ping Switch to Device, but can ping Device to Device

I'm currently troubleshooting a network i built and I'm having an issue with ping connectivity, i have set up DHCP and DNS and my end devices can get IP's from DHCP as well as i have intervlan ...
0
votes
1answer
25 views

PHY, SFPs and NBASE-T

I see 10G SFP+ modules (RJ45 port) popping up claiming to be able to also run 1G and foremost 2.5G/5G (NBASE-T). What if the switch itself only refers to the following standards? IEEE 802.3ab ...
0
votes
0answers
8 views

IP Failover & IP Alias for SA:MP [closed]

I host my own SA:MP Server and Teamspeak3 server , web server etc. I have 16 IP addresses on my OVH-Game dedicated server and I configured IP Aliasing. Teamspeak3 runs on all 16 IP addresses, web ...
1
vote
1answer
26 views

Why is Wireshark unhappy with my Netflow packet sequence numbers?

I wrote a Netflow v10 (IPFIX) traffic generator. It spoofs Source IP addresses to pretend to be coming from multiple sites, and has fake users it sends reports about. The idea is very similar to ...
0
votes
0answers
18 views

So I'm confused on this question for CompTIA A+ [closed]

The website says the answer is "C.", But why would you ever pick WPA over WPA2 for anything like this? Isn't WPA2 more secure? Question 3 A human resources manager requests wireless APs to be set up ...
0
votes
1answer
13 views

I can't decide what to buy for fixing my wifi signal [closed]

I have a broadband 2.4Ghz modem, and I'm facing signal issues. Will it be sorted out if I buy a 5Ghz wifi repeater and connect it to the 2.4Ghz modem? Or do I need to buy something different? I ...
0
votes
0answers
6 views

Wireshark does not show http posts from python or postman [closed]

I have a problem that I need to compare my python with postman post cause something is not working. That is another problem though, but for now: someone made a site (http://www.packet-foo.com/test/...
0
votes
0answers
5 views

Which router handles DHCP in a wireless bridge setup? [closed]

I'm moving into a shared home that necessitates setting up a wireless bridge between my existing network and the router already in the home. I'm curious as to which router will handle DHCP requests. I'...
0
votes
0answers
13 views

ICMP error codes on a router [closed]

I'm trying to implement the functionality of a router in C. I have 4 hosts (h0, h1, h2, h3) each connected in it's own subnet to the interface (r-0, r-1, r-2, r-3, respectively). I want to send a ICMP ...

15 30 50 per page
1
2 3 4 5
266