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Questions tagged [ip]

For questions about Internet Protocol (IP), an OSI layer-3 network protocol. There are two current IP versions in use: IPv4 and IPv6.

12 questions with no upvoted or accepted answers
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157 views

How does cellular data differ from an ISP, and what can be tracked?

Are IP addresses given to a phone static or not? Also, how can phone companies keep track of a person if they wanted to find them? For example, I don't have an account and use a pre-paid card. I'm ...
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0answers
740 views

Access Extern IP behind NAT

I have found many articles, possible solutions to this topic, but no one seems to have the same problem as me. I am working on a Cisco 1812 Router with IOS 12.4. I have found some things like ...
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0answers
265 views

Effects of ip options drop command on Cisco 4507 Device

Are there any services or applications traversing a router that will be impacted by the command, "ip options drop"? I know the router warns about RSVP when you input this command, but this 4510 is not ...
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0answers
117 views

Network translation and port forwarding causing host to timeout

I'm trying to setup a small network, consisting of 3 routers and switches, and one L3 Switch: I have activated PAT on both router R1 and R2, to translate from the private IP addresses to the public ...
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0answers
259 views

Cisco 1841/WAP4410N Wireless Access Issue

In our environment, we have a Cisco 1841 which, among other things, performs DHCP services for a small manufacturing facility. We have 100 available DHCP addresses in the pool. That device connects to ...
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1answer
18 views

When IP header of length 22bytes is there then how padding will work?

My base IPv4 header of 20bytes + 2bytes i used for Options making it 22bytes means 176bits so padding will add 16 Zeroes to make it multiple of 32? is this correct way to understand? Boundary of ...
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1answer
95 views

How to Run Static IP Through Comcast Business Class Modem to Router?

I apologize in advance for this kind of nebulous question, but I'm very stuck after many hours of trying and I need help. Here's what I have: Newest model of the Comcast Business Class Modem/Router ...
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0answers
47 views

How to change Default Gateway on Hitron (Virgin Media) router?

Our office is having connection issues with Slack. Our internet provider is Virgin (UK) and the router is the Hitron CGNV4, and Virgin suggested that a reset using the button on the back of the router ...
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0answers
103 views

4 ssids with 4 public IP addresses on pfsense

I have a requirement for 4 WiFi SSIDs, each with a separate public IP. As I need some sort of firewall I was thinking to get a pfsense Netgate SG-3100 that would have its WAN port connected to the ...
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2answers
88 views

Why does Nmap not detect a host which is active and responds to Ping?

I have connected to another laptop via the LAN cable, i am able to access the services running on the other laptop via Ip & Port. When i Ping that Ip, the machine is successfully responding. But ...
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19 views

IP SLA Flow generator (udp-jitter)

I study IP SLA because i want to test my network for VoIP. I found an article who show a study of " Scalability of Layer 3 Tunneling Protocols: Case of Voice Traffic Over IP". "Based on this project ...
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1answer
182 views

IP Camera (CISCO Packet Tracer)

I've been asked to simulate a topology, which requires me to implement 2 CCTV cameras in a network using Packet Tracer. However I realise that their isn't IP Cameras in PT, so how best can I simulate ...