All Questions
10
questions
2
votes
1
answer
1k
views
What would prevent a TCP server port (once closed), from being re-opened right away?
I have a server program that uses TCP.
Sometimes, I need to restart the program for updates, or any other reasons, but when I do, the program closes the server port, and then once it restarts, it ...
- 95
2
votes
0
answers
307
views
How can I use the "location of socket in memory" field in /proc/net/tcp
I'm working on a proxy for linux(C++) that, amongst other functions, keeps track of tcp connections and associates them with the process's pid. To do that, I get the inode in /proc/net/tcp and then ...
1
vote
0
answers
765
views
TCP traffic not working through Iperf tool in ubuntu
I am using system-A(interace name:tun0; IP: 192.168.3.1) and system-B(interface
n
ame:ss200; 192.168.3.2) which run on ubuntu. When I try sending traffic in TCP mode from A to B or vice versa, by ...
- 11
1
vote
1
answer
6k
views
How to immediately kill orphaned TCP connection?
Closing orphaned TCP connections is surprisingly difficult in Linux. This issue has been raised here, here, here, and here; however, neither of the approaches worked for me.
Calling close() doesn't ...
- 131
3
votes
0
answers
2k
views
Destination Host Unreachable between linux boxes
I have a home wifi network with 2 linux and 1 mac system. I can reach each linux from mac and other way round, but an attempt to ping a linux from another linux results with "Destination Host ...
- 131
2
votes
3
answers
15k
views
can't ping a Windows 10 through Ubuntu both connected to the same switch
so I have connected both machines to the same switch. both have internet through ethernet and are in the same network. I am trying to connect to Windows 10 it is not working. So I decided to test ...
- 737
0
votes
1
answer
4k
views
ubuntu 16.04 trying to open port 8443 not working
i need to open port 8443 in OS ubuntu 16.04 but nothing is working first i tried to do a scan port using Nmap:
RESULT :
Discovered open port 139/tcp on 127.0.0.1
Discovered open port 445/tcp on ...
- 3
0
votes
1
answer
461
views
how can i get SYN & SYN+ACK value for current tcp connection of any website on Browser?
As I know that
'$sysctl | grep net.ipv4.tcp'
gives the system wide TCP parameter value,I need to make a script in Bash for my college practical file in which If we open Browser and input the URL ...
- 21
0
votes
1
answer
434
views
Create local TCP connection from C program in Ubuntu VM to Labview in Windows (Host)
Sorry if this is lengthy, I'll try to keep it as concise as possible. I have made a C program which runs in Ubuntu in a virtual machine and a Labview program running in windows (the host of the VM) ...
- 103
0
votes
0
answers
628
views
Ubuntu openVPN TCP no internet, UDP works. Win7 works on both TCP/UDP with same settings
I've recently purchased a VPN service which I'm connecting to with openVPN.
On Windows 7 I can connect on both UDP and TCP settings, but when I'm trying the same thing on Ubuntu 13.04, it gives me ...
- 101