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Forum: Networking

Help requests related to Linux networking: setup, configuration, internet connection sharing, iptables, etc

  1. Post How to iptables allow one IP so its further blocks wont be counted?

    Hello, i dont know how? but on my OpenVZ host server and on my VPS, my Google nameserver IPs (ones i have set in /etc/resolv.conf - 8.8.8.8 and...

    Started by postcd, 07-09-2014
    • Replies: 1
    • Views: 769
    07-18-2014 Go to last post
  2. Exclamation No route to host

    Hello all, I have a question: I have two virtual machine, and I'm trying to test the connection between them and also their speed. Vm1 is...

    Started by sanaz, 02-04-2013
    • Replies: 3
    • Views: 7,695
    07-10-2014 Go to last post
  3. Unhappy Problem in printing TCP header ports values

    Hello, In my application writen in C for linux system. I have a post hook filter which tries to print out the outgoing packets source and...

    Started by ha-as, 07-02-2014
    • Replies: 0
    • Views: 998
    07-02-2014 Go to last post
  4. Linux client connection refused on port 80

    Greetings, I have a C program running on linux that I am using to try to connect to a server (on the same network) to pull some data. I have...

    Started by boomer11, 06-18-2014
    • Replies: 7
    • Views: 5,022
    06-30-2014 Go to last post
  5. Multipath tcp application-level performance measurement

    I am working on a project related to Multipath tcp and I want to measure the goodput and the RTT at the application level. I don't want to use a...

    Started by azi_nu_am_chef, 06-27-2014
    • Replies: 0
    • Views: 550
    06-27-2014 Go to last post
  6. [SOLVED] Conversion from Ethernet to WiFi, help with performance?

    Hello, Unfortunately, I am here today having to ask for some help with wifi performance. Here's the thing; in my university residence, they've...

    Started by nathanEll, 06-21-2014
    2 Pages
    1 2
    • Replies: 11
    • Views: 1,640
    06-24-2014 Go to last post
  7. Postfix server should reject the connection when starttls is issued.

    I work for Email Security company.I have a scenario to test our product .when I connect to postfix server using TLS and When Starttls is issued then...

    Started by Dakalty, 06-24-2014
    • Replies: 0
    • Views: 509
    06-24-2014 Go to last post
  8. SSH Linux->Windows with Cygwin and X11

    Hello. I want to be able to execute programs from Linux on Windows XP in LAN with Cygwin+X11 on Windows. I'm able to ssh, change files on...

    Started by kokosek, 06-15-2014
    • Replies: 3
    • Views: 1,870
    06-16-2014 Go to last post
  9. Question One to One NAT with iptables does not work. Please help!

    Hello, I am trying to get a one to one NAT between two networks working on my Ubuntu 13.10 machine to no avail. The scenario is as follows. My...

    Started by DDRTC, 05-06-2014
    • Replies: 1
    • Views: 1,256
    06-11-2014 Go to last post
  10. RSTP / MSTP open-source library

    Hi, I would like to introduce you to my open-source RSTP/MSTP library: code.google.com/p/mstp-lib It's completely platform-independent C++. I...

    Started by adigostin, 06-09-2014
    • Replies: 0
    • Views: 4,183
    06-09-2014 Go to last post
  11. Question Meaning of gfp_mask in linux Kernel

    Hello, What is the meaning of the second argument in the `alloc_skb`, the `gfp_mask`?? And how does it value effect the allocation in the...

    Started by ha-as, 06-04-2014
    • Replies: 0
    • Views: 1,468
    06-04-2014 Go to last post
  12. Question Migrating a TCP socket and copying the contents of sk_buff for queues

    Hello, I am trying to migrate a TCP socket in listening mode from one server to another, to achieve this prupose I am copying multiple parameters...

    Started by ha-as, 06-02-2014
    • Replies: 7
    • Views: 1,662
    06-02-2014 Go to last post
  13. Question Linux Kernel lock_sock Function

    Hello, Can anyone tell me what is the purpose of using the function lock_sock(struct sock *sk) in the kernel space? And how does it effect the...

    Started by ha-as, 06-01-2014
    • Replies: 5
    • Views: 1,321
    06-02-2014 Go to last post
  14. [SOLVED] Cannot connect to router wirelessly after upgrading to wheezy

    After upgrading to wheezy, I am no longer able to connect either of my two wireless routers using the D-Link DWA-131 802.11n Wireless N Nano...

    Started by vialaspada, 05-27-2014
    • Replies: 6
    • Views: 1,429
    05-30-2014 Go to last post
  15. Issue setting up PPTP connection in the console

    Os: Fedora LXDE In the chap secrets file I have the following: Domain\Username Ipaddress Password * In the options.pptp file the only...

    Started by rpiper, 05-29-2014
    • Replies: 3
    • Views: 2,729
    05-30-2014 Go to last post
  16. Question Data structure for TCP packet in linux

    Hello, I want to know which header file in Linux contains the structure of the TCP packets i.e. the data type definition of the tcp packet struct....

    Started by ha-as, 05-26-2014
    • Replies: 9
    • Views: 2,275
    05-28-2014 Go to last post
  17. How to discover more about what doing an IP connection

    Hello, on openvz server are virtual machines and when i see there is example 300 connections of one IP and 700 connections another IP via netstat...

    Started by postcd, 05-27-2014
    • Replies: 0
    • Views: 437
    05-27-2014 Go to last post
  18. Question TCP/IP stack data structure in the Linux kernel space

    I am trying to understand the implementation of TCP/IP stack in the linux kernel space. And I came across multiple-thing which I am not sure about. ...

    Started by ha-as, 05-23-2014
    • Replies: 2
    • Views: 1,138
    05-23-2014 Go to last post
  19. Any good, free VPN's for Linux?

    I'd like to set up a VPN for those times when I'm out and about and want to connect to the interweb with my laptop through a public wifi. I've read...

    Started by TNFrank, 05-02-2014
    • Replies: 8
    • Views: 1,867
    05-22-2014 Go to last post
  20. Set up port forwarding

    Hi all, Host Ubuntu 12.04 desktop 64bit Guest Ubuntu 12.04 LAMP/desktop 64bit VirtualBox 2 NICs Optic Fibre Broadband connection - interface...

    Started by satimis, 05-21-2014
    • Replies: 0
    • Views: 601
    05-21-2014 Go to last post

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