Networking :: Implementation Of TCP/IP Applications Over SCTP?
Dec 9, 2010Have any of the below TCP based applications are implemented over SCTP in Linux ?
1. ftp
2. telnet
3. HTTP
Or any other applications ?
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CentOS 5 :: SCTP Setsockopt Failed Error Code 22 (invalid Argument For SCTP Events)?
Mar 11, 2009We Are Using Centos 5 64Bit with Kernel 2.6.18.92 with Amd Athlon ProcessorThe problem when calling setsockopt it return error errno:22 InvalidargumentThis code run on Macos ,Sunsolaris ,But fail to execute on Centos 5 64bit & The SCTP mailing group told me that this problem belongs to centosexample form ibm webside
/*
server
*/
[code]....
Fedora Networking :: What Is Network Protocol Sctp
Dec 12, 2010The three lines in /etc/services for nfs (2049) has UDP, TCP and one I haven't seen before sctp. what is sctp and does iptables block it?
View 3 Replies View RelatedNetworking :: Raw SCTP Socket Cannot Bind With Port?
Jul 26, 2010If I open a raw SCTP socket, am I able to bind to a specific port? (I only want to see SCTP packets from a particular IP address AND port.) Or, any raw SCTP socket, regardless of port binding , will get all SCTP packets received by the OS from that IP address? The port doesn't matter and is ignored.
View 1 Replies View RelatedNetworking :: Unable To Close SCTP Socket
Jun 16, 2011I create SCTP socket with port number 60011. The SCTP socket descriptor value is 18.
When I try to close the socket with the socket descriptor, sometimes it is not closed without errno.
Ubuntu Networking :: How To Use IPtables For Different NAT Implementation
May 6, 2010IPtables, implementing each type of NAT
-Full Cone NAT
-Restricted Cone NAT
-Port Restricted Cone NAT
-Symmetric NAT
using IPTables.
Explanation:
Full Cone: A full cone NAT is one where all requests from the same internal IP address and port are mapped to the same external IP address and port. Furthermore, any external host can send a packet to the internal host, by sending a packet to the mapped external address.
Restricted Cone: A restricted cone NAT is one where all requests from the same internal IP address and port are mapped to the same external IP address and port. Unlike a full cone NAT, an external host (with IP address X) can send a packet to the internal host only if the internal host had previously sent a packet to IP address X.
Port Restricted Cone: A port restricted cone NAT is like a restricted cone NAT, but the restriction includes port numbers. Specifically, an external host can send a packet, with source IP address X and source port P, to the internal host only if the internal host had previously sent a packet to IP address X and port P.
Symmetric: A symmetric NAT is one where all requests from the same internal IP address and port, to a specific destination IP address and port, are mapped to the same external IP address and port. If the same host sends a packet with the same source address and port, but to a different destination, a different mapping is used. Furthermore, only the external host that receives a packet can send a UDP packet back to the internal host.
On the netfilter mailinglist, Pedro Goncalves suggested the following:
192.168.2.170 is "public" address and 10.0.0.1 is "private" address
/-"Full Cone NAT", with the following rules:/
HTML Code:
iptables -t nat -A POSTROUTING -o eth0 -j SNAT --to-source 192.168.2.170
iptables -t nat -A PREROUTING -i eth0 -j DNAT --to-destination 10.0.0.1
/-"Port Restricted Cone NAT", with just a single rule:/
HTML Code:
iptables -t nat -A POSTROUTING -o eth0 -j SNAT --to-source 192.168.2.170
Networking :: Implementation Of Network Protocols
Apr 10, 2009How to implement Network Protocols.
View 1 Replies View RelatedNetworking :: Practive For Implementation Of A Failover Server?
Jan 20, 2011I'm in need of some advise from you guys. I'm currently running a live production serverA, and last week it went down for a couple of hours which was really bad to say the least.
I've been thinking about building a mirror serverB that will rsync my data nightly. Now I don't want to load balance here, I just need to be able to switch to serverB when serverA goes down for any reason.
Would the best solution for this is to change my main nameserver entry when I want to switch ? I'm just curious if it will be a few hours or an instant change.
I thought I'd ask before attempting this live.
General :: Using SCTP Socket In Red Hat Enterprise?
Mar 12, 2010I want to use SCTP socket in red hat enterprise.
View 9 Replies View RelatedSoftware :: Regarding Sysctl With SCTP Module?
Feb 18, 2010i am using ubuntu 9.10. i am trying to use ubuntu as a test bed for my thesis work on seamless mobility including SCTP and its add ip feature. i have installed lksctp with this command
sudo apt-get install lksctp-tools libsctp-dev
now i have to enable its addip feature and as i have read in other threads i have to change it from sysctl but the problem is that when i enter "sysctl -a" it does not show any sctp options.
Programming :: Increase SCTP Outstream Value?
Jul 14, 2011Im using SCTP to send streams to my application, but at max i can send 10 streams after that i get error saying "sendmsg() failed(22): Invalid argument".To set sctp outstream and instream value im using structure sctp_initmsg defined in netinet/sctp.h
struct sctp_initmsg {
__u16 sinit_num_ostreams;
__u16 sinit_max_instreams;
[code]....
General :: Wireless Implementation In Ns2?
Feb 5, 2011not able to solve an error when i try to do a wireless scenario in ns2.
num_nodes is set 3
warning: Please use -channel as shown in tcl/ex/wireless-mitf.tcl
INITIALIZE THE LIST xListHead
Programming :: Implementation Of RSA Algorithm In C / C++
Aug 2, 2010Can I know the implemention of RSA(Encryption and decryption) algorithm in C / C++.
View 1 Replies View RelatedProgramming :: MD5 Algorithm Implementation
Apr 27, 2011I have a copy of the MD5 algorithm and I'm taking a look at the source. It's pretty interesting but there are a few things that I'm curious about and I was wondering if anyone a bit more intuitive than I could help me out.The function declarations in the MD5 files are a bit unfamiliar to me. There is a macro used called PROTO_LIST, which I'm still not sure as to what this thing is doing exactly, but it's littered everywhere throughout the source.The signature here isn't too unfamiliar to me with the exception of the position of the PROTO_LIST macro. So here is a function with an unnamed argument of type MD5_CTX*.To me, this resembles an initializer list found in C++ with constructors but I certainly don't think that is the case here. So my questions about this are (1) how is this legal code in C and (2) what functionality has the PROTO_LIST macro provided for the function?
View 3 Replies View RelatedOpenSUSE :: Wine Installation And Implementation?
May 11, 2010i have done everything that all the documentations have said and i still cant get this bloody thing working. some one give me the exact commands that removes all traces of all wine packages. and then can someone give me the exact commands to install.
which user i must be doing this under and exactly what i must configure in the config files. all that i want too accomplish by this is to successfully play games on my pc.
General :: Implementation Of IPTables And Netfilters?
Oct 20, 2010I am trying to understand the implementation of iptables and netfilters. Any good links or docs.
View 1 Replies View RelatedGeneral :: Optimize Implementation Of DSR Algo In UBUNTU 9.1 Using NS 2.34 ?
Feb 25, 2010I need to optimize the implementation of DSR algo using NS-2. Now i need to identify the first of all "the parameters which i can change and which are effective in optimization point of view." I want to get into the c++ code as well as header files which are used to implement DSR algo.
View 4 Replies View RelatedGeneral :: Find A Leach Protocol Implementation For Ns2.34?
Aug 11, 2011I am trying to find a leach protocol implementation for ns2.34 but all links available are dealing with ns2.27 Are the instructions valid for ns2.34?
View 4 Replies View RelatedGeneral :: Linear Hashing Implementation In C Language?
Dec 7, 2010I'm looking for linear hashing implementation in C language. PS: I have to implement this on Ubuntu 10.04 Linux on 64 bit machine.
View 2 Replies View RelatedProgramming :: Proper Implementation Of POSIX Threads
Apr 6, 2011I've implemented a program URL... which reads digital IF data from a radio receiver through a named pipe, measures power levels, and sends the result to stdout. The program is interactive; there is a thread that reads from stdin to watch for commands, a thread that constantly either reads data from the named pipe or throws data away, and an array of processing threads. The program uses GTK+extra to plot the signals. The IF data stream bandwidth exists at the limits of today's technology (is very very fast).
Problem Statement:The program works fine with a few bugs. I've learned since I've made it that using global state variables to coordinate threads isn't a good way of doing it. I also only had knowledge of mutexes and polled the state variable instead of using other methods.My reimplementation will use the following:
- One "Stdin Command Monitoring" thread
- One "Get data from named pipe" thread
- One post-processor thread
- N Processing threads
All threads are alive during the life of main()There are N buffers. Data will come in from the named pipe, and the "Get data" thread will write the data to an "available" buffer. When the buffer is full it will be marked as "full". There will be N processing threads, one for each buffer. When a processing threads' buffer is full, it will process the buffer and save the result to a final buffer. At the end of a number of averages, the post-processor thread will perform a final process on the final buffer and send the results to stdout.
Red Hat / Fedora :: Implementation Of Kernel-based Virtual Machine
Jun 9, 2011I'm Redhat 5 user, and I want to implement Kernel-based Virtual Machine. I tried too much search in google but I cant find the perfect instruction regarding it.
View 3 Replies View RelatedGeneral :: Web Panel To Manage Iptables And Tc / Secure Implementation Of Changes
Mar 19, 2010Subject of my school work:"Web interface for managing firewall and band on the access server (Linux)"I have a big problem because I do not know how to safely implement the change in the system and show the logs on the Web page.Unfortunately, the number of solutions for today is enormous and it is increasingly difficult to me to decide on the right.They are:
1. Launching a web server with root privileges (the default mode of miniserv'a Webmin)
2. CGI scripts on apache SUID (mode webmin on "foreign" server)
3. suPHP or suexec
4. Cron implements changes to the root
5. Daemon in C "periodically" implement changes in the configuration files created by PHP
6. Daemon in C to implement the changes requested in the configuration files created by PHP
7.Use SSH in PHP and after logging into the root of execution of commands in the configuration files created by PHP (the root password in the DB)
8.Use SSH in PHP and after logging into the root of execution of commands in the configuration files created by PHP (the root password, enter manually)
9. Like the above so that the use of sudo and user rights only to the necessary shell commands
10. Add the user apache in the /etc/sudoers can perform all the necessary applications shell commands
11. Seize the opportunity to command: shell_exec ( `sudo php-f / home /example/script.php`), and /etc/sudoers
Programming :: General Implementation SIP Client Software Using C' Language?
Sep 15, 2010I am new to this forum and to Networking as well. I have chosen to implement:
1) SIP Client using C' language
2) Platform: Windows
3)Its going to be on command line
my problem is that I need some reference like books, material or website where I can learn how to write the code from scratch or port the code according to my requirements. My implementation should serve the purpose like two SIP clients should communicate with each other for exchange of Audio data.
General :: Firewall Rule Implementation - Facebook - Give Only 2 Ips To Get Its Access?
Aug 1, 2011My network diagram is internet<---->dansguardian proxy(centos5)<--->my network i have blocked facebook for my network but now i want to give only 2 ips to get its access & i do not want to enter these ip in exceptioniplist as if i doo so then they will be able to access all the sites that i have blocked. and if i am giving this entry [URL] in bannedsite list it is also not working.....
View 1 Replies View RelatedSecurity :: Implementation Of Distributed Firewall In A Local Area Network?
Apr 6, 2011I want to know the details about the implementation of distributed firewall in a local area network
View 5 Replies View RelatedProgramming :: C Coding Hacking / Ssh Dynamic Local Port Forwarding Implementation?
Feb 3, 2010From this thread I've decided to try add a feature of removing local port forwardings in ssh.Here are some very ugly and not-yet working hacks what I made so far:
* Patch for channels.c
* Patch for channels.h
* Patch for clientloop.c
I was clearly expecting this to work without any troubles-everything seem to be logically correct, but I made a programming mistake somewhere: don't know where, maybe you will point me to this?Many sites say there is a WAY AROUND with -D param(starting socks proxy as a tunnel-generator), added since 5.2, but I don't need that way around. I need a way through. I use exact ports for exact services and if I want to change it runtime I'd like to have ability to do so.If you have other ideas or points instead of coding this, please share them here & here(original question).
Slackware :: Errors - Warning: Unsupported SASL Client Implementation: Cyrus
Mar 17, 2010My problem is to get postfix working with a smarthost, to send mails from home with dynamic IP, and which needs authentication. I did exactly the same with Slackware 12.2 (postfix 2.6.2) and it worked. Now I tried to do with 2.6.2 (actual running version is 2.7.0 with the same problem) on Slackware 13 64bit. Following error message occurs around every minute in the maillog:
[code]...
Ubuntu :: Several Applications Click On And It Takes To The Installer How To Remove Those Types Of Applications
Jul 28, 2011I haven't used Ubuntu for a while, and just reinstalled it. I have one major dislike about the new version, There are several applications I click on and it takes me to the installer.How do I remove those types of applications or just install them all?
View 3 Replies View RelatedUbuntu :: 90% Of The Applications Install - Last Release - Do Not Show Up Later On In Applications Menu
Jul 24, 2010I feel shy asking this question but, 90% of the applications I install in Ubuntu (last release), do not show up later on in the applications menu, so I cant run them. I know it seems silly, but I can't find the way to handle this inconvenience. Is there a place (like Start> All programs in Windows), were I could find and run all the programs I install?
View 1 Replies View RelatedUbuntu :: Erasing Applications From Installed Applications Menu?
Jun 5, 2011I was wondering if there was any way to remove icons from the installed applications menu?I recently attempted to install GOG.com's Zork Anthology using Wine and when I de-installed, the icons for those files were still listed in installed applications. Is there anyway to delete them manually?
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