The tcp tag has no wiki summary.
9
votes
1answer
972 views
Kernel socket structure and TCP_DIAG
I'm working on a software which connects to a Real Time data server (using TCP) and I have some connections dropping. My guess is that the clients do not read the data coming from the server fast ...
3
votes
1answer
61 views
detect process that executes portscans
I have to administer an ubuntu 12.04 server, where there seem to go portscans to the whole subnet. How can I find out the process that does the scans?
pstree
init─┬─acpid
...
2
votes
1answer
504 views
Port Mirroring in Fedora?
I have set up an application that listens constantly to a port for network packets, and I would like to create another one that receives the same network packets ( for use as a test bed). Getting the ...
1
vote
1answer
63 views
iptables port forwarding
I have a CentOS server with Java/J2EE(Tomcat) installed on TCP port 8080.
I have two interfaces, eth0 and lo.
I need to forward all incoming connection on TCP port 80 to 8080.
I tried doing the ...
1
vote
1answer
59 views
Port 80 refused by Linux (Ubunt 12.04)
I am having an issue I cannot seem to resolve. I am being refused only on port 80. However port 8080, and 22 (Tomcat and ssh) are available. I am pretty sure this is not an Apache thing, however I ...
1
vote
1answer
326 views
How to limit all tcp traffic to the network interface the session was initiated on?
I have an embedded linux system with two network interfaces (lan0, wlan0) that are configured to the same subnet. A server on this system accepts tcp connections on both interfaces.
How I can assure ...
3
votes
0answers
130 views
Socksifying a qemu-kvm using tsocks
I'm trying to socksify a qemu-kvm using tsocks, but I have no success.
I don't know if qemu access directly the hardware, skipping the OS or something like that, but I wasn't able to do this feat.
...
1
vote
0answers
37 views
configure allowed_tcp_congestion_control via config files in linux kernel
I am trying to come up with a custom set of TCP congestion control variants as part of the tcp_allowed_congestion_control. I do have multiple variants on my tcp_available_congestion_control list but ...
1
vote
0answers
31 views
Can we Bring Up eth1 after removing e1000e modules?
I am trying to setup TCP in RTnet. I am not sure whether its possible. I read that RTnet is not supporting TCP. Is that so?
So now I am trying to setup rteth0 as server and eth1 as client. To setup ...
1
vote
0answers
59 views
Why isn't hydra being disconnected?
I have SSHD running on port 5800 on some machine. (It is a my machine at home.)
If I run this manually in a terminal:
# ssh someIP -p 5800
The connection is lost because I am disconnected after 3 ...
0
votes
0answers
40 views
How to run Varnish together with Solr/Jetty on different ports?
I am trying to make Varnish work on my server but it seems that both configurations use port 8080 so Apache doesn't start.
Anyway, then I check the used ports, this is what I get for netstat -tulpn| ...
0
votes
0answers
35 views
Socket output from server process disappears when process is run by cron
I'm having a really strange problem that only occurs when a server process is launched by cron. The environment is an Ubuntu 12.0.4 LTS distro running in an Azure VM, with an exposed endpoint to the ...
0
votes
0answers
64 views
What could be the possible reasons for bad performance of TCP over Wireless or Sate-lite networks ?
I am running a wireless network having Linux(fedora 17) at sender end.We decided TCP_veno is most useful for my network,so we are using it as default congestion control algorithm.Still, We are not ...
0
votes
0answers
51 views
How to tune Unix (Ubuntu) for web crawling?
What are some ways to tune some Unix settings in the kernel(or elsewhere) for web crawling purposes? I am using multi-curl, and am using a multi-threading approach. I've set a higher limit for maximum ...
0
votes
0answers
167 views
No ports can be found using port scan
Problem:
I have a laptop and a server (Home-Server) with fc17. They are both using the desktop environment. I am trying to set up a VNC server on Home-Server so that I can set everything up without ...
