Transmission of IP Packets in TCP

I’ve read that IP packets can sometimes get lost in transmission and that TCP often requests retransmission of lost data.  How often are packets lost permanently?  What are the requirements for retransmission?  Are lost packets a security risk?

ITKE1,067,965 pointsBadges:

How much faster is UDP than TCP?

How much faster is UDP than TCP for a general protocol message exchange?

ITKE1,067,965 pointsBadges:

Why is a TCP Window Update is causing my server to crash?

I'm making my own server software for a game in Java (everything was written in Java). A big problem I'm having is that I don't have any protocol documentation available so I've been reading packets with Wireshark. So, when a client is connecting, the server is sending it the level file in a Gzip...

ITKE1,067,965 pointsBadges:

Why would someone use UDP instead of TCP?

Aside from speed, why would someone use UDP instead of TCP? From what I understand, UDP can lose packets, whereas TCP cannot. What other advantages does UDP offer?

ITKE1,067,965 pointsBadges:

What’s in your network security and troubleshooting toolkit?

Just curious what tools you have in your network toolkit? I've heard or used snort, TCPDump, NMap, but would love other suggestions

Michael Morisy8,643 pointsBadges:

Lacking a FQDN during database mirroring on SQL Server 2005

I am trying to work with database mirroring on SQL Server 2005, and I keep receiving the error message, “One or more of the server network addresses lacks a fully qualified domain name (FQDN). Specify the FQDN for each server, and click Start Mirroring again.” I know that the syntax for a...

SQL Server Ask the Experts2,585 pointsBadges:

Global communication network without the transport layer

Is it feasible to have a global communication network without the transport later? Thanks!

ITKE1,067,965 pointsBadges:

Packet Sniffer

I need to know about packet sniffer with a clear demo and how the packets are transmitted in TCP and UDP.

ITKE1,067,965 pointsBadges:

Wake on LAN / Magic Packet broadcast doesnt work through PPTP

Hi, I have a network, where I want to use WOL from a remote PC. It works when I send a packet from inside the network (or on the server). If I connect via PPTP from a remote Windows XP PC, I can't wake up the PC on the LAN. I suspect the broadcast packet doesn't reach the LAN. The PPTP connection...

Benbje0 pointsBadges:

Transfer a file by a batch job

Hi, I want to transfer a file by a batch-job (which is running on the mainframe) from a mainframe to a windows system. The file should be transferred in binary mode. The problem is that I need the CR/LF at the end of the records in the file after I transferred the file to the windows system. Do you...

Clitze0 pointsBadges:

Save log view in Event Viewer

Howdy folks, If I create a new log view in event viewer and filter the results, is there any way to save this view? Every time I close event viewer I have to re-create it. Probably just MS by design.... Is there any way to script it?

TheVyrys0 pointsBadges:

Exchange 2003 logon sessions

Why does exchange server 2003 create so many logon sessions? When you open the ESM and navigate to Administrative Group->Servers->Server->First Storage Group->Mailbox Store->Logons. Some users have as many as fifteen sessions, why? I also get the following error in the application...

Bpirro5 pointsBadges:

LAN connectivity problem with Compaq notebook

I have a Compaq EVO n1020v notebook. This works fine in our office LAN and sometimes it does not at all. Office LAN is a workgroup with ICS enabled in win 2K server. If I check the IP of the notebook it shows the IP of the LAN but never connects to the internet, can't access LAN...

BinooDas123410 pointsBadges:

Mac address to IP address resolution

How can we resolve IP address from Mac address and can we do this from Cisco switch 3750? We are able to track port no and associated Mac address from Cisco switch by using the command #sh mac-address-table dyanamic>, but we also want to track the associated IP address with port no. Please...

Ruchitgarhwal0 pointsBadges:

Steps to connect Printer in LAN

I have HP Laserjet 1000 series printer. Please explain to me the steps to connect this printer in LAN with 4 computers. The computers are not in LAN. I want to create a new LAN with 4 computers & the printer mentioned above. All four computers have Windows 98 as Operating System.

Swatiaggrawal0 pointsBadges:

How to add Mulitple DNS Suffix

I need to add more than one DNS suffix in (CFGTCP+12) Domain name filed...but it looks,i can only add one suffix...does anybody has any idea in overcoming this limit? Thanks

qmaster1,675 pointsBadges:

AS400 TELNET

Hi, whilst having problems with connectivity to AS400 sessions, was advised to restart the TELNET service. How do i do that, will a simple ENDHOSTTCP and STRHOSTSVR do? or do we have any specific procedure that need to be followed to? Thanks in advance

harisudhan211,005 pointsBadges:

Programming in C# the communication between client and server: How to do it?

In one of my exams i have to do a program that communicates with client  using C#. NET TCP. So i ask for help from anyone. 

Ermaldina35 pointsBadges:

Some email stuck in Exchange 2003 queue

Hi All, We have a single Exchange 2003 Enterprise server with about 150 users.  Lately - over the last month some emails have begun to languish in the queue until delivery failure.  Other emails from the same senders to the same recipients go through, and internal emails are sent as well. During...

TimMarks55 pointsBadges:

Restrict traffic for Cisco VPN clients

Hi all, First some background for my question: I have recently set up a VPN tunnel between a Cisco PIX 506E (VPN server) and remote clients. The remote clients use Cisco VPN Client software version 4.8. Everything seems to work fine. But as it is configured right now the remote clients have full...

Daniel40 pointsBadges: