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TCP/IP

Transmission Control Protocol/Internet Protocol (TCP/IP) is the set of networking protocols that define end-to-end connectivity specifying how data...

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Troubleshooting Solution

How do I do Reverse Lookup for my website? And what other options are there?

bycuriouswebster
5

I get hits at my WiX site, and my iPhone shows me the city and state for each hit, most times. Other

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Troubleshooting Solution

ARP Cache poisoning attack

byIP4IT Staff
11

New device connected to the network unknown device


Network threat blocked ARP Cache poisoning attack 
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Troubleshooting Solution

How to break a subnet and use as different subnets

bylianne143
2

Hi 


I was given subnet 10.17.144.0/22 by our firewall team and we had used only 40 IP addresses for

…
Troubleshooting Solution

Laptop Can't Find Phone Hotspot

byBob Schneider
10

It seems that my laptop will often not "find" the my phone's hotspot too use for internet access.

…
Troubleshooting Solution

Is long distance internet doable for a quick-reflex 1v1 game?

byJames Hancock
3

Hi


I grew up playing Star Control 1 all the time, a 1 v1 space ship conflict.


There, the play requires

…
Troubleshooting Solution

Is there a way in Business Objects to send some sort of HTTP keep alive to our Proxy so it doesn't think the connection is done and close while the report is still processing large datasets.

byMarc Spurgeon
1

I work for a large company that uses a Proxy server for its clients to gain access to the internet.

…
Troubleshooting Solution

keepalived - received advertisement timeout

byabolinhas
6

Hi,


I'm trying to setup keepalived between two servers, this servers are in diferent DMZ's.

I already

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Research Solution

Send a message via Ethernet to a barcode scanner or other device using C

byBernd Scholler
10

I am quite new to programming in C. So it's a steep learning curve to me. 
I am looking for some

…
Troubleshooting Solution

Connect to existing TCP Server/Listener from VB.NET

byScott McDaniel (EE MVE )
3

I'm trying to connect to a machine interface using TCP. Their interface is named JMIF, for Java

…
Troubleshooting Solution

Sophos Red 15 not assigning DHCP addresses to target

byAndrew N. Kowtalo
7

Would anyone by chance know why a Sophos Red 15 will not assign DHCP addresses to a device after we

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Advice Solution

Fiddler Classic question

by*** Hopeleonie ***
6

Hi

when I record a trace then the timeline is not visible everytime:


Do I do something wrong?

Troubleshooting Solution

unable to pass network connectivity to kamrui ak2 unit connected to a sophos red 15 Lan port

byAndrew N. Kowtalo
5
Hi all can someone provide me with an answer I have in regards to an issue I'm experiencing with a …
Troubleshooting Solution

TCP TIME_WAIT after closing port

bydeleyd
7

We have a batch of tests we perform on our code, which involves starting a program which listens for

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Research Solution

Or how to verify if an IP address is public or private?

byPkafkas
4

I am doing some packet tracing on our network and I recognize some IP addresses and there are some

…
Troubleshooting Solution

SSH tunnel connection alternative

bysam15
8

Hi

I have an oracle server in SITE A DMZ and RHEL server has only private IP address for security

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Troubleshooting Solution

SMTP Server Needed or something else?  I need to email PDF files as soon as they are created

bybrothertruffle880
9

I have reports (PDF Files being placed into a folder on a shared network drive.  I would like these

…
Troubleshooting Solution

Why don't all LAN Networks go into Class A?

byADNS Group
6

Why don't all LAN networks go into Class A?
What's the downside of creating a Class A network?

Advice Solution

Do you have any idea what is the name of the tcp port 6839?

byCarl
3

I tried to scan the ports of our servers and came across this  "6839/tcp open  unknown" 

Troubleshooting Solution

Considerations prior disabling IPv6

byjana
8

Hi Experts!


I have been testing VPNs and came upon a suggestion of disabling IPv6 in router or

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Troubleshooting Solution

Websites for running free domain history reports

byIT Guy
1

I need to run a domain history report on a URL used by one of our customers.


What websites or online

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