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• Rewriting Live TCP Streams

  - by user213060

  I want to rewrite TCP/IP streams. Ettercap's etterfilter command lets you perform simple live replacements of TCP/IP data based on fixed strings or regexes. Example: http://ettercap.sourceforge.net/forum/viewtopic.php?t=2833 I would like to rewrite streams based on my own filter program instead of just simple string replacements. Anyone have an…

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• which command is used to block tcp port

  - by astha

  i want to block tcp port with the help of iptables commands linux which command is used for this purpose????

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• Perl unit test - start a tcp server & continue

  - by John

  I am trying to write a unit test for a client server application. To test the client, in my unit test, I want to first start my tcp server (which itself is another perl file). I tried to start the tcp server by forking: if (! fork()) { system ("$^X server.pl") == 0 or die "couldn't start server" } So when I call "make test" after "perl…

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• perl and tcp/ip

  - by oren

  what is the most updated book on programming tcp/ip sockets with perl?

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• Does Apple push notification or UDP/TCP

  - by Steve918

  Title says it all. Does Apple push use TCP or UDP?

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• need for tcp fine-tuning on heavily used proxy server

  - by Vijay Gharge

  Hi all, I am using squid like Internet proxy server on RHEL 4 update 6 & 8 with quite heavy load i.e. 8k established connections during peak hour. Without depending much on application provider's expertise I want to achieve maximum o/p from linux. W.r.t. that I have certain questions as following: How to find out if there is scope for…

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• Increase the TCP receive window for a specific socket

  - by rursw1

  Hi, How to increase the TCP receive window for a specific socket? - I know how to do so for all the sockets by setting the registry key TcpWindowSize, but how do do that for a specific one? According to MSFT's documents, the way is Calling the Windows Sockets function setsockopt, which sets the receive window on a per-socket…

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• example of sending commands using PHP from a TCP client to a server

  - by Yanier

  hello guys I need an example of how to create a TCP client using PHP to send commands to a server

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• TCP 30 small packets per second polutes connection with server

  - by Denis Ermolin

  I'm testing connection with flash client and cloud server(boost::asio for software) over TCP connection. My connection with server already is really poor - 120 ms ping in average. I found when i start to send packets with 2 bytes size (without tcp header) with speed 30 packets/s ping grow to 170-200 average. I think that it's really bad…

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• send commands from a TCP Client to a server using PHP

  - by Yanier

  I need an example how to send commands from a TCP client to a server using PHP

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• Opening up TCP Sockets in j2ee Webapplication

  - by Gvenez

  Hello, We have to communicate with a C++ component from a J2ee web application and my proposal involved using JMS server to communicate with the C++ component which is located on other machine. However the developer of the C++ component wants me to open up TCP/IP sockets from the webapplication and communicate over XML. My view is that…

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• how to create a TCP client to send commands to a server using PHP

  - by Yanier

  Hi guys I need to create a TCP client using PHP to send commands to a server with an IP and a port. greetings

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• Network communications mechanisms for SQL Server

  - by Akshay Deep Lamba

  Problem I am trying to understand how SQL Server communicates on the network, because I'm having to tell my networking team what ports to open up on the firewall for an edge web server to communicate back to the SQL Server on the inside. What do I need to know? Solution In order to understand what needs to be opened where, let's first…

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• Is Android AVD's firewall somehow more restricted to real Android firewall?

  - by hhh

  I have a TCP server running in AVD and a TCP client running in AVD. AVD client dies because the connection refused so we are doubting some restricted firewall settings. I turned off the firewall in my Debian -laptop with this here but it did not fix the problem so some issue with Android -emulator, intro here. How can I make a TCP…

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• Query related to Connection type BIS-B Socket in Blackberry application

  - by mobile_dev

  Hi all, I am trying to establish BIS Socket connection. I am able to establish BIS Http connection from my service provider. I have downloaded one chat application that checks network types supported by my device/service plan which has following list: 1)BIS-Http : OK 2)BIS-SOCKET :OK 3)BES-HTTP : NA 4)BES-SOCKET : NA 5)TCP-HTTP…

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• Sharepoint Ports

  - by Jack Levin

  I am installing Sharepoint 2007 and I want users to be able to sign into it from outside. I need to know what ports do I need to open and do I need UDP or TCP or both?

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• FreeBSD Listen Queue Overflows - can't increase max queue size

  - by Harry

  I have a decently high trafficked FreeBSD Nginx server, and I'm starting to get a large number of listen queue overflows: [root@svr ~]# netstat -sp tcp | fgrep listen 80361931 listen queue overflows [root@svr ~]# netstat -Lan | grep "*.80" tcp4 192/0/128 *.80 [root@svr ~]# sysctl kern.ipc.somaxconn kern.ipc.somaxconn:…

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• How to increase maximum connection backlog limit in windows 2008 server

  - by Sumit Deo

  Hello All, I have a Windows 2008 Server, Its maximum connection backlog limit (Tcp) is 200. Is there any way to increase this limit to higher value? say 1000 or 2000.

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• What's port 1283?

  - by kbluck

  I see a lot of connection attempts to 1283/tcp on my firewall from a client computer to a Windows Server 2008 Domain Controller. What exactly is this traffic? Something to do with NetBIOS, perhaps?

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• NGINX load balancer DOS itself

  - by cjaredrun

  I have been running a load balancing machine for a number of months now which has had no problems in the past. I got woken up to some downtime and I am seeing this a lot in syslog: TCP: Possible SYN flooding on port 80. Sending cookies. At which point Nginx takes up 100% of the cpu and doesn't come back down to normal for…

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• Using proxy server to redirect MySQL traffic to multiple servers using standard port?

  - by FrenchFry

  Is it possible to redirect MySQL (tcp) traffic to multiple servers based on domain name alone? Our DNS is setup to point several sub-domain aliases to one proxy machine. (running haproxy and iptables). We would like to redirect all database traffic through this proxy server and route it to the appropriate db server, WITHOUT…

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• Slow Transfer Speeds from KVM host to client

  - by indian maiden

  I am trying to isolate the root cause of slow transfer speeds from my host OS to a KVM client. Both are Linux. Rsync on the host 192.168.1.72 rsync -auv --progress rut3.img /tmp/ [54.09MB/s] Rsync to the client: rsync -auv --progress rut3.img 192.168.1.80:/tmp/ [25.52MB/s] I realize that there will be some TCP…

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• Router 2wire, Slackware desktop in DMZ mode, iptables policy aginst ping, but still pingable

  - by skriatok

  I'm in DMZ mode, so I'm firewalling myself, stealthy all ok, but I get faulty test results from Shields Up that there are pings. Yesterday I couldn't make a connection to game servers work, because ping block was enabled (on the router). I disabled it, but this persists even due to my firewall. What is the connection…

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• TCP/IP Ilustrated 1 second edition [on hold]

  - by user196821

  Well, I want to read and learn about how tcpip works in detail, so I got a copy of the well known book of Richard Stevens. But after a little, I discovered there is a second edition of the book, so I checked it out. But surprisingly, the second edition does not cover some subjects that the first actually does (like…

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• TCP/IP Forwarding in Windows Vista and Above

  - by Charles Gargent

  This is the way to do it on XP, but is it possible on Windows Vista and Above? If so how do you detect it? Is there a registry setting for it, or is there com dll or api for it?

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