What does this TCP Packet mean ?

Posted by asksuperuser on Super User See other posts from Super User or by asksuperuser
Published on 2010-05-13T12:26:42Z Indexed on 2010/05/13 12:34 UTC
Read the original article Hit count: 324

Filed under:

tcpip

|

wireshark

|

networking

I'm total newbie at tcp/ip and I was experimenting with Wireshark.

What this mean:

1824    578.194204  xxx.xxx.xxx.xxx yyy.yyy.yyy.yyy UDP Source port: 17500  Destination port: 17500

In data I can see that my user pc name is sent (happily it's a generic name): does this mean someone is trying to hack my pc ?

© Super User or respective owner

Related posts about tcpip

Need help diagnosting a random BSOD

as seen on Super User - Search for 'Super User'
I have random BSOD even in idle .. Already tried: memtest - ok scandisk- ok netsh int ip reset Winsock fix. tcpip.sys+2c13e 21.06.2011 15:21:00 DRIVER_IRQL_NOT_LESS_OR_EQUAL tcpip.sys+2de08 22.06.2011 15:09:28 DRIVER_IRQL_NOT_LESS_OR_EQUAL tcpip.sys+2de08 22.06.2011 16:09:31… >>> More
iPhone/iPod receive messages from C# tcpip server using CocoaAsyncSocket

as seen on Stack Overflow - Search for 'Stack Overflow'
Hello, i'm trying to send/receive data over wifi to an iphone/ipodtouch app from a C# tcpip server. for this i used cocoaAsyncSocket from the google project. If i push a button and i send a request from ipod to server it returns the requested data(song title for example)..i want to know every second… >>> More
Socket(TCPIP) Unstable

as seen on Server Fault - Search for 'Server Fault'
I have a setup of a SCPI server in a Win7 PC and have 2 other programs talking to it locally(127.0.0.1) over TCPIP socket 5025 and 5029. This worked well and stable in a fresh PC, but when we moved it into our production lines and the IT dept added their policies and stuff, it became unstable. The… >>> More
xt_TCPMSS: bad length messages

as seen on Server Fault - Search for 'Server Fault'
I'm getting loads of messages like: Jun 23 10:24:20 awakening kernel: [ 1691.596823] xt_TCPMSS: bad length (1492 bytes) Jun 23 10:24:21 awakening kernel: [ 1692.663362] xt_TCPMSS: bad length (1448 bytes) Jun 23 10:24:21 awakening kernel: [ 1692.663495] xt_TCPMSS: bad length (1448 bytes) Jun 23 10:24:21… >>> More
What is "Disable class based route addition" good for?

as seen on Super User - Search for 'Super User'
In the advanced TCP/IP settings of a VPN connection, i found a checkbox labeled with "Disable class based route addition". The checkbox is only enabled as long as "Use default gateway on remote network" is switched off. What is "Disable class based route addition" good for? Detailed instructions… >>> More

Related posts about wireshark

wireshark http POST

as seen on Server Fault - Search for 'Server Fault'
Hi I would like to have a http POST request method CAPTURE filter I know it is easy to do it by display filter http.request.method==POST but I need tcpdump compatible I wrote tcp dst port 80 and (tcp[13] = 0x18) But it is not perfect... tcp dst port 80 and (tcp[((tcp[12:1] & 0xf0) 2):4] =… >>> More
How to filter http traffic in Wireshark?

as seen on Server Fault - Search for 'Server Fault'
I suspect my server has a huge load of http requests from its clients. I want to measure the volume of http traffic. How can I do it with Wireshark? Or probably there is an alternative solution using another tool? This is how a single http request/response traffic looks in Wireshark. The ping is… >>> More
Wireshark is not capturing traffic through http://localhost:8888

as seen on Super User - Search for 'Super User'
Currently, my wireshark can capture traffic from http://localhost (traffic that is on port 80) but it won't capture traffic on localhost:8888 Is there any extra configuration/software that I need for wireshark to capture traffic of localhost on this port? I'm running Ubuntu 9.10 >>> More
Multi language support in wireshark

as seen on Super User - Search for 'Super User'
Do we have multiple language support with Wireshark. We are using Windows Xp SP2 and Ubuntu Linux environment. Actually we have a plugin which is UDP based and we have a requirement to Analyse the Information in Packet List Pane and Packet Details Pane to be viewed in other languages like French… >>> More
Saving Wireshark capture settings for future use

as seen on Server Fault - Search for 'Server Fault'
Is there any way to save Wireshark capture options? So it can be reuse after restart Wireshark. Also, if the saved file is in plain text, it's possible to use scripts generating bunch of capture settings, such with different filter setting. Does anyone know? Thanks. >>> More