• how to test a 10/100 mbps ethernet swtich

    I have a 10/100 Mbps ethernet switch which is claimed to not function properly. So is et up a LAN using the switch, issgned IP address to 2 computer, connected them to the swtich and started pinging one computer from the other. So, now , after pinging PC1 from PC2, all the ports on the switch work,...

    Rushabh.Shah.840 pointsBadges:
  • What is a Reason for Outgoing TCP Connections to Port 25 (SMTP) From Random TCP Ports on a PC with no Email Client Running?

    What is a Reson for Outgoing Tcp Connections to Port 25 (SMTP) From Random Tcp Ports on a Pc with no Emamil Client Running? The IP addresses that it was trying to reach resolved to yahoo and aol webmail mx servers. I am trying to track down a spam virus in a network, is this sysmptoms of the virus.

    RockAmadeus5 pointsBadges:
  • Role of Session Layer in OSI Model

    Hi, I am facing problems in what does session layer do.. exactly. i know that session layer is used with TCP communication only. So Session layer is the one that controls its establishment, continuation and termination of sessions by rasing flags : FIN, RST etc..   please...

    Dhruv165 pointsBadges:
  • finding webmail access site

    Hello, Is there any way one can find out the webmail access site using only the email address? Actually my friend was out of town and wanted to check her email using webmail but she had forgotten the webmail access site provided by her hosting service provider. She told me find this out but I could...

    BinooDas123410 pointsBadges:
  • IP ADDRESSING AND SUBNETING

    Hello Can some one help me with an easir way of calculating subnets and host per given IP address

    Markmu5 pointsBadges:
  • What indicates high thresholds in TCP statistics, especially Failed Connection Attempts?

    I am trying to learn about TCP statistics, especially Failed Connection Attempts. What value would indicate a high threshold? Also, what causes these errors to occur? Does this indicate an issue at the remote or local host? Or does it have to do with network bandwidth or lack of I/O, etc.? Thanks!

    NetworkingATE1,545 pointsBadges:
  • TCP Fast Retransmission

    From what I have read TCP Fast Retransmission is meant to occur if 3 or more duplicate ACKs are recieved in a row. However I have a trace file where Fast retransmission is occuring after only 2 duplicate ACKs. Can anyone explain this for me please? Why is there a variation in the number of...

    Tbolitho10 pointsBadges:
  • Message in FTP session

    I am looking for a way to put a non-disclosure message when people signon to our system with FTP. What would be the best method??

    Hmonat20 pointsBadges:
  • Dell Optiplex GX520 hibernation/sleep mode issues

    Hello, We have several Dell Optiplex GX520's on the network running Windows XP pro. They randomly fall into sleep mode. Moving the mouse will not wake them - you have to push the power button to get them out of sleep mode. Also we are not able to remotely wake them to do patch updates or remotely...

    Jmello0 pointsBadges:
  • Check Connection established on a TCP port from a program?

    Is there any way to get the status of a TCP port within a program? We need to monitor a specific port to ensure that a communications link is established, and then send a page to the analyst on call when the communications link goes down. I can view the information with NETSTAT 3 (WRKTCPSTS *CNN),...

    Tagrove0 pointsBadges:
  • Need help transfering iSeries DB2 file to PGP Windows program

    Augusto needs your help. He writes: "I have an RPG ILE program that creates a file in my iSeries. The CL I am running controls that the file is ready to FTP to another location. To do this I have to transfer the file to a PC/Windows environment and then use a Windows-based PGP encryption program,...

    MichelleDavidson430 pointsBadges:
  • capture PLC-data in our LAN

    Our PLC-vendor is going to provide us collected PLC-data on a server in our LAN. Are sockets (port higher then 1024) the best way to do this? As we are AS/400-minded people, will FTP resolve this with the same performance? Or are there other possibilities? Please, please, give us some guidelines.

    Hahajokes5 pointsBadges:
  • netstat -s for TCP Statistics for IPv4?

    Hello All, i trying to figure out TCP Statistics for IPv4 especially Failed Connection Attempts . I would like to understand what value would indicate high as threshold?. Also i would like to know if appearing of errors of such kind indicate issue at remote host or local, and what could cause such...

    Tbaror45 pointsBadges:
  • What is the difference between TCP and OSI?

    What is the difference between TCP (Transmission Control Protocol) and OSI (Open Systems Interconnection)?

    NetworkingATE1,545 pointsBadges:
  • wireless internet

    I have a router connect to the internet and a directional outdoor antenna of range up to 8km. I have another router in another building about 200m away from the first. I actually want the set up and effective wireless network with the second router in that building. Can i connect the two routers...

    Frenyb0 pointsBadges:
  • tcp/ip and ipx/spx

    how tcp/ip and ipx/spx communicate effectively as 1 network

    01010101015 pointsBadges:
  • TCP Listening Port

    How do I get my TCP listening port in an enterprise network using Windows Server 2003

    Zhetmasta50 pointsBadges:
  • VPN setup

    i have a planet vpn router/firewall already configured to allow pptp protocol on port 1723, no polocies-pass thru mode. on my windows server 2003(small business pack) i have enabled two ports for pptp on routing and remote configurations. and also a mobile account for my remote user. vpn from...

    92220990 pointsBadges:
  • Looking for clarification on new IP layout

    I currently have a 192.168.1.0/24 network. I have one cisco router with many cisco switches that allow everyone to have a DHCP ip of 192.168.1.X. I will soon have more people then the /24 will handle, so I would like to switch to: 172.16.30.0 subnet 255.255.254.0 mask 172.16.31.255 broadcast That...

    Kevins740 pointsBadges:
  • TCP Retransmissions b/c of Checksum Incorrect

    We have a problem where some users will complain of slow application response time (on the LAN) from our ERP server, but others will be fine. After many hours of troublshooting I've discovered the following: - Packet Sniff's of affected users shows TCP Retransmissions because the Checksum is...

    Tbitner510 pointsBadges:

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