Parallel Programing with MPI
... Process groups are ordered sets of processes Each process is locally uniquely identified via its local (group-related) process ID or rank Ordering starts with zero, successive numbering Global identification of a process via the pair (process ...
... Process groups are ordered sets of processes Each process is locally uniquely identified via its local (group-related) process ID or rank Ordering starts with zero, successive numbering Global identification of a process via the pair (process ...
Lab Additions/Suggestions previously done
... • Experimentation with “Smashing the Stack for fun and profit” by Aleph One • A Real World Exploit imapd • Common Vulnerabilities Buffer Overrun • A Contemporary Vulnerability DCOM RPC • Libsafe – A Stack Buffer Overflow Preventive Measure • Obtaining Administrator Privileges on Windows using a Buff ...
... • Experimentation with “Smashing the Stack for fun and profit” by Aleph One • A Real World Exploit imapd • Common Vulnerabilities Buffer Overrun • A Contemporary Vulnerability DCOM RPC • Libsafe – A Stack Buffer Overflow Preventive Measure • Obtaining Administrator Privileges on Windows using a Buff ...
Data types
... Important if your server has other things to do For example sending data to many clients at once • Send only the data that you can send immediately • Send more data when the connection is ready to take more ...
... Important if your server has other things to do For example sending data to many clients at once • Send only the data that you can send immediately • Send more data when the connection is ready to take more ...
Why write exploits?
... dll.BaseAddress = 0x77f00000 dll.Address['JMP ESP'] = 0x77F32836 dll.Address['JMP EDI'] = 0x77F2D148 dll.Address['CALL EAX'] = 0x77F1A9DD dll.Address['JMP [EBX]'] = 0x77F0174A dll.Address['CALL EBX'] = 0x77F01089 dll.Address['JMP ECX'] = 0x77F05372 dll.Address['JMP [EAX]'] = 0x77F08070 dll.Address[' ...
... dll.BaseAddress = 0x77f00000 dll.Address['JMP ESP'] = 0x77F32836 dll.Address['JMP EDI'] = 0x77F2D148 dll.Address['CALL EAX'] = 0x77F1A9DD dll.Address['JMP [EBX]'] = 0x77F0174A dll.Address['CALL EBX'] = 0x77F01089 dll.Address['JMP ECX'] = 0x77F05372 dll.Address['JMP [EAX]'] = 0x77F08070 dll.Address[' ...
What are Sockets?
... The client code for a datagram socket client is the same as that for a stream socket with the following differences. – the socket system call has SOCK_DGRAM instead of SOCK_STREAM as its second argument & IPPROTO_UDP instead of IPPROTO_TCP as its third argument. – there is no connect() system call – ...
... The client code for a datagram socket client is the same as that for a stream socket with the following differences. – the socket system call has SOCK_DGRAM instead of SOCK_STREAM as its second argument & IPPROTO_UDP instead of IPPROTO_TCP as its third argument. – there is no connect() system call – ...
TCP TRANSMISSION CONTROL PROTOCOL INTRODUCTION TO TCP, THE INTERNET'S
... TCP ‘B’ sends a pure window update segment to signal to TCP ‘A’ that the receive window size is now 10000 again (Rx buffer). Note that a real TCP implementation would not send a window update if the Rx buffer still has reasonable free capacity. A real TCP implementation would wait for more data to a ...
... TCP ‘B’ sends a pure window update segment to signal to TCP ‘A’ that the receive window size is now 10000 again (Rx buffer). Note that a real TCP implementation would not send a window update if the Rx buffer still has reasonable free capacity. A real TCP implementation would wait for more data to a ...
Document
... • All of them exploited flaws in application programs • Very common for DoS attacks Exploits 1. Netmeeting 2.x by Cult of the Dead Cow 2. NT RAS by Cerberus Information Security 3. Winhlp32 by Cerberus Information Security 4. IISHack by eEye 5. Oracle Web Listener 4.0 by CIS 6. Outlook GMT token ove ...
... • All of them exploited flaws in application programs • Very common for DoS attacks Exploits 1. Netmeeting 2.x by Cult of the Dead Cow 2. NT RAS by Cerberus Information Security 3. Winhlp32 by Cerberus Information Security 4. IISHack by eEye 5. Oracle Web Listener 4.0 by CIS 6. Outlook GMT token ove ...
Introducing GÉANT
... Balance memory usage while under memory stress. Controls on the actual memory usage (not just TCP window size) So it includes memory used by the socket data structures The maximum values have to be larger than the BDP Example: for a BDP of the order of 20MB, we can chose 32MB ...
... Balance memory usage while under memory stress. Controls on the actual memory usage (not just TCP window size) So it includes memory used by the socket data structures The maximum values have to be larger than the BDP Example: for a BDP of the order of 20MB, we can chose 32MB ...
ppt
... Stack is generic to allow any type of value to be stored
Stack wordStack = new Stack();
Stack numStack = new Stack();
...
... Stack
A.2_Win-SocketsProg
... If the Internet address is equal to INADDR_ANY, any appropriate network interface will be used; this simplifies application programming in the presence of multi-homed hosts. If the port is specified as 0, the Windows Sockets implementation will assign a unique port to the application with a value be ...
... If the Internet address is equal to INADDR_ANY, any appropriate network interface will be used; this simplifies application programming in the presence of multi-homed hosts. If the port is specified as 0, the Windows Sockets implementation will assign a unique port to the application with a value be ...
Part I: Introduction - Computer Science and Engineering
... Scanning Strategy • Random scanning – Probes random addresses in the IP address space (CRv2) ...
... Scanning Strategy • Random scanning – Probes random addresses in the IP address space (CRv2) ...
IPv6 Land Speed Record
... R=C*(RTT**2)/2*MSS (where C is the link capacity and MSS is the max segment size). This is not a real problem for standard traffic on a shared link, but a serious penalty for long distance transfers of large amount of data. The TCP stack was designed a long time ago and for much slower networks: fro ...
... R=C*(RTT**2)/2*MSS (where C is the link capacity and MSS is the max segment size). This is not a real problem for standard traffic on a shared link, but a serious penalty for long distance transfers of large amount of data. The TCP stack was designed a long time ago and for much slower networks: fro ...
Building a Reliable Ethernet/IP Network: GSFC Prototype
... • LLC – “Logical Link Control” offers a IEEE standardized datalink layer reliability protocol, adding a 3 byte header to the ethernet frame ...
... • LLC – “Logical Link Control” offers a IEEE standardized datalink layer reliability protocol, adding a 3 byte header to the ethernet frame ...
Lecture 7
... • Pure stream-oriented connection, it does not care about message boundaries • A TCP connection is full duplex (bidirectional), so the same socket can be read and written to (cf. half duplex pipes) • Provides a checksum that guarantees packet integrity ...
... • Pure stream-oriented connection, it does not care about message boundaries • A TCP connection is full duplex (bidirectional), so the same socket can be read and written to (cf. half duplex pipes) • Provides a checksum that guarantees packet integrity ...
MPT SP2 v2 - Raven Computers Ltd
... Support for per message spam confidence level (SCL) ratings and message tagging. Outlook 2003 uses SmartScreen & SCL to enhance ...
... Support for per message spam confidence level (SCL) ratings and message tagging. Outlook 2003 uses SmartScreen & SCL to enhance ...
Linux Multilayer Switchin with LiSA
... incoming interface differs from the tagging on the outgoing interface 3 . Although this is what happens most frequently, it's not the only possible case. For instance, a socket buffer may have already been passed to one or more generic packet handlers when it reaches the Switching Engine. And it als ...
... incoming interface differs from the tagging on the outgoing interface 3 . Although this is what happens most frequently, it's not the only possible case. For instance, a socket buffer may have already been passed to one or more generic packet handlers when it reaches the Switching Engine. And it als ...
An End-to-End Measurement Study of Modern Cellular Data Networks
... instantaneous throughput for cellular data networks. Finally, we investigate how the instantaneous throughput of cellular data networks varies over time and find that it can vary by as much as two orders of magnitude within a 10-min interval. 4.1 Burstiness of Packet Arrival In cellular data network ...
... instantaneous throughput for cellular data networks. Finally, we investigate how the instantaneous throughput of cellular data networks varies over time and find that it can vary by as much as two orders of magnitude within a 10-min interval. 4.1 Burstiness of Packet Arrival In cellular data network ...
Utility-Maximizing Data Dissemination in Socially Selfish
... data injection rates for lower layers to handle; at the network layer, a relay node strategically decides the next-hop relay for each data session to be forwarded to; at the MAC layer, the available spectrum is carefully and dynamically allocated for transmission between pairs of nodes. All of these ...
... data injection rates for lower layers to handle; at the network layer, a relay node strategically decides the next-hop relay for each data session to be forwarded to; at the MAC layer, the available spectrum is carefully and dynamically allocated for transmission between pairs of nodes. All of these ...
Institutionen för systemteknik
... processor. The main objective of this project was to integrate these components into an IP router with two or more Gigabit Ethernet interfaces. A working system has been designed and found working. It consists of three main components, the input module, the output module and a packet buffer. Due to ...
... processor. The main objective of this project was to integrate these components into an IP router with two or more Gigabit Ethernet interfaces. A working system has been designed and found working. It consists of three main components, the input module, the output module and a packet buffer. Due to ...
Remi Ando, Tutomu Murase, Masato Oguchi
... Terminal in Wireless LAN QoS-TCP is likely to guarantee a target bandwidth in mobile wireless environments Analysis of performance evaluation results QoS-TCP cannot defeat competitive TCP in bit error free ...
... Terminal in Wireless LAN QoS-TCP is likely to guarantee a target bandwidth in mobile wireless environments Analysis of performance evaluation results QoS-TCP cannot defeat competitive TCP in bit error free ...
IP Telephony Project
... system into your web page… • Imagine being able to give your customers a world wide toll-free number… • IP Telephony enables all that, and more... Network Lab - Technion ...
... system into your web page… • Imagine being able to give your customers a world wide toll-free number… • IP Telephony enables all that, and more... Network Lab - Technion ...