TCP/IP

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Transmission Control Protocol/Internet Protocol (TCP/IP) is the set of networking protocols that define end-to-end connectivity specifying how data should be packeted, addressed, transmitted, routed and received at the destination. This functionality is organized into four abstraction layers which are used to sort all related protocols according to the scope of networking involved.

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It seems that "go to my pc" is now a paid  monthly service.
Are there any free tools that I can use to provide remote pc support (I..e logging into someone else's pc to give them a tutorial, or to …

1026 views
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Hi Everyone,
                        im runing a daily schedule backup for a 2003 wintel server with my TSM 6.4 and in the las 5 days the backup is missing with the following error:

02/13/2017 …

1534 views

Let's say my ISP gives me only an IPv6 range (a /64) and no IPv4.

I'll use the first IP in that range in my router and give (a very small subset of) the rest to my other devices.

Q1: all the …

2748 views

Comcast has always been bass ackwards and it still doesn't make much difference as long as you know they are idiots but I am going to ask.

As far as static IP addresses go they call what I call a …

1331 views

I have two locations connected via a site-to-site PUBLIC VPN tunnel since each site has a different ISP, therefore if either ISP is having issues, but VPN tunnel has issues

If I run a timeless ping…

127 views

Hi everyone,

We are looking to replace our LAN Firewall, and I was hoping to get some guidance on how best to introduce it to the LAN as change on this scale is not exactly a routine daily task in …

1260 views

SalesForce is upgrading the requirement from SecurityProtocolType.Tls10

to SecurityProtocolType.Tls11 anbd SecurityProtocolType.Tls12

What can you tell me about this protocol?

Thanks

328 views

Hi

I have two devices that connect to each other.

Device 1 connects to Device 2.

After two minutes, I notice that the connection is terminated. Wireshark shows Device issuing a RSET.

236 views

Network cable tester shows nothing wrong physically

ipconfig output

Ethernet adapter Ethernet 4:

   Connection-specific DNS Suffix  . :
   Description . . . . . . . . . . . : Realtek USB GbE…

743 views

If I need to include IPv4 IPs (192.168.0.1, 192.168.10.10), how to calculate the netmask that I should use

554 views
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What will happen if we expand the subnet mask from 255.255.255.0 to 255.255.240.0 on our SonicWALL router? Our current IP range is 10.0.0.1 - 10.0.0.254. I know the new mask will expand the network to…

20106 views

using BGP Attributes

When using BGP attributes  I have noticed the usage of  ip as-path access-list.
Does that mean we can also use  :

ip origin access-list
ip next_hop access-list
ip …

284 views

Our gateway used to be the firewall and was changed to another device on the network - how can we determine what switch, router, etc is acting as our gateway?

450 views

Summarization of 32 bit Network.

I would like to know if there is a way to summarize 32 bit Network
for instance 1.1.1.1/32

I used Route Summarization calculator and gave me :1.1.1.0/31

324 views


Hi,

 I have set up two new Linux (CentOS 7) servers on the network. They received dynamic IP addresses (192.168.1.144  & 148 respectively) from Windows DHCP server. The computer names are …

4065 views

In the DIagram Below, if the Network 1.1.1.0/24 is not available then BR1 and BR2 will not be queried about it since they are EIGRP Stub.

OK..that 's clear...
if we configure HQ1 as Stub , then …

1970 views

I have a class C subnet 192.168.18.0/24 and I would like to know the best way to add more ips.

My setup is as followes;
1 - sonicwall firewall
1- 2012 Server Standard Hyper V Host with 2 Vms 1 …

1270 views

I've used Telnet to check for open ports.  My question is does a service have to be listening and responding in order for telnet to connect?  Ideally I'm trying to find a way to just see if a port is …

557 views

I am trying to setup a home office using Cisco networking gear.

I have setup my new rv130 VPN router via wizard and getting internet access via wireless connections. No internet access on any wired…

3260 views
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I want external access from port 9000 to internal port 80.

So the person trying to connect to my device will use 9000, but internal only port 80 will be open.

I have a router , and then a modem …

14150 views

I've built the default Visual Studio 2015 C# WCF Service Application.  Runs fine with the included client using the default connection http://localhost:50127/Service1.svc

For further testing I'm …

131 views

Hi Experts

Wondering if you can give me any suggestions about the following: After 4 years of working perfectly, the DHCP Server service on a SBS 2011 stops all the time.
There is an event in the…

355 views

That is - is the return path differing from the send path? And under what circumstances is this a problem?

526 views

I have decided  to move my site away from my current hosting provider.

I have been advised to consider  getting a dedicated I.P. address and/or a VPN.

After three days of browsing the Internet, …

1241 views

I have a website www.cap.org which I thought the IP was 184.175.167.130.  My users need to access this site.  I've been using the following command on my ASA to by pass filtering for websense.  …

470 views
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