3ÆÄÆ®-11
|
|
|
- 미려 천
- 5 years ago
- Views:
Transcription
1 Chapter 11 Chapter 12 Chapter 13 Chapter 14 Chapter 15 Chapter 16 Chapter 17 C # N e t w o r k P r o g r a m m i n g
2 Part 3 _ chapter 11 ICMP >>> 430
3 Chapter 11 _ 1 431
4 Part 3 _ 432
5 Chapter 11 _ N o t e 433
6 Part 3 _ 2 434
7 Chapter 11 _ Socket sock = new Socket(AddressFamily.InterNetwork, SocketType.Raw, ProtocolType.Icmp); IPEndPoint iep = new IPEndPoint(IPAddress.Parse(" "), 0); sock.sendto(packet, iep); W a r ning 435
8 Part 3 _ W a r ning 3 436
9 Chapter 11 _ class ICMP public byte Type; public byte Code; public UInt16 Checksum; public int MessageSize; public byte[] Message = new byte[1024]; public ICMP() ICMP packet = new ICMP(); packet.type = 0x08; packet.code = 0x00; packet.checksum = 0; Buffer.BlockCopy(BitConverter.GetBytes((short)1), 0, packet.message, 0, 2); Buffer.BlockCopy(BitConverter.GetBytes((short)1), 0, packet.message, 2, 2); byte[] data = Encoding.ASCII.GetBytes("test packet"); 437
10 Part 3 _ Buffer.BlockCopy(data, 0, packet.message, 4, data.length); packet.messagesize = data.length + 4; public ICMP(byte[] data, int size) Type = data[20]; Code = data[21]; Checksum = BitConverter.ToUInt16(data, 22); MessageSize = size - 24; Buffer.BlockCopy(data, 24, Message, 0, MessageSize); int recv = ReceiveFrom(data, ref ep); ICMP response = new ICMP(data, recv); Console.WriteLine("Received ICMP packet:"); Console.WriteLine(" Type 0", response.type); Console.WriteLine(" Code: 0", response.code); Int16 Identifier = BitConverter.ToInt16(response.Message, 0); Int16 Sequence = BitConverter.ToInt16(response.Message, 2); Console.WriteLine(" Identifier: 0", Identifier); Console.WriteLine(" Sequence: 0", Sequence); stringdata = Encoding.ASCII.GetString(response.Message, 4, response.messagesize - 4); Console.WriteLine(" data: 0", stringdata); 438
11 Chapter 11 _ public byte[] getbytes() byte[] data = new byte[messagesize + 9]; Buffer.BlockCopy(BitConverter.GetBytes(Type), 0, data, 0, 1); Buffer.BlockCopy(BitConverter.GetBytes(Code), 0, data, 1, 1); Buffer.BlockCopy(BitConverter.GetBytes(Checksum), 0, data, 2, 2); Buffer.BlockCopy(Message, 0, data, 4, MessageSize); return data; IPEndPoint iep = new IPEndPoint(IPAddress.Parse(" "), 0); sock.sendto(packet.getbytes(), iep); 439
12 Part 3 _ T i p L i Sting public UInt16 getchecksum() UInt32 chcksm = 0; byte[] data = getbytes(); int packetsize = MessageSize + 8; int index = 0; while ( index < packetsize) chcksm += Convert.ToUInt32(BitConverter.ToUInt16(data, index)); index += 2; chcksm = (chcksm >> 16) + (chcksm & 0xffff); chcksm += (chcksm >> 16); return (UInt16)(~chcksm); 440
13 Chapter 11 _ packet.checksum = 0; packet.checksum = packet.getchecksum(); N o t e L i Sting using System; using System.Net; using System.Text; class ICMP public byte Type; public byte Code; public UInt16 Checksum; public int MessageSize; public byte[] Message = new byte[1024]; public ICMP() 441
14 Part 3 _ public ICMP(byte[] data, int size) Type = data[20]; Code = data[21]; Checksum = BitConverter.ToUInt16(data, 22); MessageSize = size - 24; Buffer.BlockCopy(data, 24, Message, 0, MessageSize); public byte[] getbytes() byte[] data = new byte[messagesize + 9]; Buffer.BlockCopy(BitConverter.GetBytes(Type), 0, data, 0, 1); Buffer.BlockCopy(BitConverter.GetBytes(Code), 0, data, 1, 1); Buffer.BlockCopy(BitConverter.GetBytes(Checksum), 0, data, 2, 2); Buffer.BlockCopy(Message, 0, data, 4, MessageSize); return data; public UInt16 getchecksum() UInt32 chcksm = 0; byte[] data = getbytes(); int packetsize = MessageSize + 8; int index = 0; while ( index < packetsize) chcksm += Convert.ToUInt32(BitConverter.ToUInt16(data, index)); index += 2; chcksm = (chcksm >> 16) + (chcksm & 0xffff); chcksm += (chcksm >> 16); return (UInt16)(~chcksm); 442
15 Chapter 11 _ 4 Echo Request Type = 8 Code = 0 Checksum Identifier = 1 Sequence = 1 Message = test packet Server Type = 0Code = 0 Checksum Identifier = 1 Sequence = 1 L i Sting using System; using System.Net; using System.Net.Sockets; using System.Text; class SimplePing 443
16 Part 3 _ public static void Main (string[] argv) byte[] data = new byte[1024]; int recv; Socket host = new Socket(AddressFamily.InterNetwork, SocketType.Raw, ProtocolType.Icmp); IPEndPoint iep = new IPEndPoint(IPAddress.Parse(argv[0]), 0); EndPoint ep = (EndPoint)iep; ICMP packet = new ICMP(); packet.type = 0x08; packet.code = 0x00; packet.checksum = 0; Buffer.BlockCopy( BitConverter.GetBytes((short)1), 0, packet.message, 0, 2); Buffer.BlockCopy( BitConverter.GetBytes((short)1), 0, packet.message, 2, 2); data = Encoding.ASCII.GetBytes("test packet"); Buffer.BlockCopy(data, 0, packet.message, 4, data.length); packet.messagesize = data.length + 4; int packetsize = packet.messagesize + 4; UInt16 chcksum = packet.getchecksum(); packet.checksum = chcksum; host.setsocketoption(socketoptionlevel.socket, SocketOptionName.ReceiveTimeout, 3000); host.sendto(packet.getbytes(), packetsize, SocketFlags.None, iep); try data = new byte[1024]; recv = host.receivefrom(data, ref ep); catch (SocketException) Console.WriteLine("No response from remote host"); return; ICMP response = new ICMP(data, recv); Console.WriteLine("response from: 0", ep.tostring()); Console.WriteLine(" Type 0", response.type); Console.WriteLine(" Code: 0", response.code); int Identifier = BitConverter.ToInt16(response.Message, 0); int Sequence = BitConverter.ToInt16(response.Message, 2); Console.WriteLine(" Identifier: 0", Identifier); 444
17 Chapter 11 _ Console.WriteLine(" Sequence: 0", Sequence); string stringdata = Encoding.ASCII.GetString(response.Message, 4, response.messagesize - 4); Console.WriteLine(" data: 0", stringdata); host.close(); csc SimplePing.cs ICMP.cs C:\>SimplePing
18 Part 3 _ response from: :0 Type 0 Code: 0 Identifier: 1 Sequence: 1 data: test packet C:\> C:\>SimplePing No response from remote host C:\> C:\>SimplePing response from: :0 Type 0 Code: 0 Identifier: 1 Sequence: 1 data: test packet C:\> W a r ning 446
19 Chapter 11 _ 5 IPHostEntry iphe = Dns.Resolve(hostbox.Text); IPEndPoint iep = new IPEndPoint(iphe.AddressList[0], 0); 447
20 Part 3 _ L i Sting using System; using System.Drawing; using System.Net; using System.Net.Sockets; using System.Text; using System.Threading; using System.Windows.Forms; class AdvPing : Form private static int pingstart, pingstop, elapsedtime; private static TextBox hostbox, databox; private static ListBox results; private static Thread pinger; private static Socket sock; public AdvPing() Text = "Advanced Ping Program"; Size = new Size(400, 380); Label label1 = new Label(); label1.parent = this; label1.text = "Enter host to ping:"; label1.autosize = true; label1.location = new Point(10, 30); hostbox = new TextBox(); hostbox.parent = this; hostbox.size = new Size(200, 2 * Font.Height); hostbox.location = new Point(10, 55); results = new ListBox(); results.parent = this; results.location = new Point(10, 85); results.size = new Size(360, 18 * Font.Height); Label label2 = new Label(); label2.parent = this; label2.text = "Packet data:"; label2.autosize = true; label2.location = new Point(10, 330); 448
21 Chapter 11 _ databox = new TextBox(); databox.parent = this; databox.text = "test packet"; databox.size = new Size(200, 2 * Font.Height); databox.location = new Point(80, 325); Button sendit = new Button(); sendit.parent = this; sendit.text = "Start"; sendit.location = new Point(220,52); sendit.size = new Size(5 * Font.Height, 2 * Font.Height); sendit.click += new EventHandler(ButtonSendOnClick); Button stopit = new Button(); stopit.parent = this; stopit.text = "Stop"; stopit.location = new Point(295,52); stopit.size = new Size(5 * Font.Height, 2 * Font.Height); stopit.click += new EventHandler(ButtonStopOnClick); Button closeit = new Button(); closeit.parent = this; closeit.text = "Close"; closeit.location = new Point(300, 320); closeit.size = new Size(5 * Font.Height, 2 * Font.Height); closeit.click += new EventHandler(ButtonCloseOnClick); sock = new Socket(AddressFamily.InterNetwork, SocketType.Raw, ProtocolType.Icmp); sock.setsocketoption(socketoptionlevel.socket, SocketOptionName.ReceiveTimeout, 3000); void ButtonSendOnClick(object obj, EventArgs ea) pinger = new Thread(new ThreadStart(sendPing)); pinger.isbackground = true; pinger.start(); void ButtonStopOnClick(object obj, EventArgs ea) pinger.abort(); results.items.add("ping stopped"); 449
22 Part 3 _ void ButtonCloseOnClick(object obj, EventArgs ea) sock.close(); Close(); void sendping() IPHostEntry iphe = Dns.Resolve(hostbox.Text); IPEndPoint iep = new IPEndPoint(iphe.AddressList[0], 0); EndPoint ep = (EndPoint)iep; ICMP packet = new ICMP(); int recv, i = 1; packet.type = 0x08; packet.code = 0x00; Buffer.BlockCopy(BitConverter.GetBytes(1), 0, packet.message, 0, 2); byte[] data = Encoding.ASCII.GetBytes(databox.Text); Buffer.BlockCopy(data, 0, packet.message, 4, data.length); packet.messagesize = data.length + 4; int packetsize = packet.messagesize + 4; results.items.add("pinging " + hostbox.text); while(true) packet.checksum = 0; Buffer.BlockCopy(BitConverter.GetBytes(i), 0, packet.message, 2, 2 UInt16 chcksum = packet.getchecksum(); packet.checksum = chcksum; pingstart = Environment.TickCount; sock.sendto(packet.getbytes(), packetsize, SocketFlags.None, iep); try data = new byte[1024]; recv = sock.receivefrom(data, ref ep); pingstop = Environment.TickCount; elapsedtime = pingstop - pingstart; results.items.add("reply from: " + ep.tostring() + ", seq: " + i + ", time = " + elapsedtime + "ms"); catch (SocketException) results.items.add("no reply from host"); 450
23 Chapter 11 _ i++; Thread.Sleep(3000); public static void Main() Application.Run(new AdvPing()); sock = new Socket(AddressFamily.InterNetwork, SocketType.Raw, ProtocolType.Icmp); sock.setsocketoption(socketoptionlevel.socket, SocketOptionName.ReceiveTimeout, 3000); csc /t:winexe AdvPing.cs ICMP.cs 451
24 Part 3 _ 6 452
25 Chapter 11 _ L i Sting using System; using System.Net; using System.Net.Sockets; using System.Text; class TraceRoute public static void Main (string[] argv) byte[] data = new byte[1024]; int recv, timestart, timestop; Socket host = new Socket(AddressFamily.InterNetwork, SocketType.Raw, ProtocolType.Icmp); IPHostEntry iphe = Dns.Resolve(argv[0]); IPEndPoint iep = new IPEndPoint(iphe.AddressList[0], 0); EndPoint ep = (EndPoint)iep; ICMP packet = new ICMP(); packet.type = 0x08; packet.code = 0x00; packet.checksum = 0; Buffer.BlockCopy(BitConverter.GetBytes(1), 0, packet.message, 0, 2); Buffer.BlockCopy(BitConverter.GetBytes(1), 0, packet.message, 2, 2); data = Encoding.ASCII.GetBytes("test packet"); Buffer.BlockCopy(data, 0, packet.message, 4, data.length); packet.messagesize = data.length + 4; int packetsize = packet.messagesize + 4; 453
26 Part 3 _ UInt16 chcksum = packet.getcchecksum(); packet.checksum = chcksum; host.setsocketoption(socketoptionlevel.socket, SocketOptionName.ReceiveTimeout, 3000); int badcount = 0; for (int i = 1; i < 50; i++) host.setsocketoption(socketoptionlevel.ip, SocketOptionName.IpTimeToLive, i); timestart = Environment.TickCount; host.sendto(packet.getbytes(), packetsize, SocketFlags.None, iep); try data = new byte[1024]; recv = host.receivefrom(data, ref ep); timestop = Environment.TickCount; ICMP response = new ICMP(data, recv); if (response.type == 11) Console.WriteLine("hop 0: response from 1, 2ms", i, ep.tostring(), timestop-timestart); if (response.type == 0) Console.WriteLine("0 reached in 1 hops, 2ms.", ep.tostring(), i, timestop-timestart); break; badcount = 0; catch (SocketException) Console.WriteLine("hop 0: No response from remote host", i); badcount++; if (badcount == 5) Console.WriteLine("Unable to contact remote host"); break; host.close(); 454
27 Chapter 11 _ for (int i = 1; i < 50; i++) host.setsocketoption(socketoptionlevel.ip, SocketOptionName.IpTimeToLive, i); timestart = Environment.TickCount; host.sendto(packet.getbytes(), packetsize, SocketFlags.None, iep); csc TraceRoute.cs ICMP.cs C:\>TraceRoute hop 1: No response from remote host hop 2: response from :0, 220ms hop 3: response from :0, 140ms 455
28 Part 3 _ hop 4: response from :0, 141ms hop 5: response from :0, 140ms hop 6: response from :0, 130ms hop 7: response from :0, 130ms hop 8: response from :0, 191ms hop 9: response from :0, 190ms hop 10: response from :0, 190ms hop 11: response from :0, 190ms hop 12: response from :0, 191ms :0 reached in 13 hops, 180ms. C:\> 7 456
29 Chapter 11 _ ICMP response = new ICMP(data, recv); long answer = BitConverter.ToUInt32(response.Data, 4); IPAddress netmask = new IPAddress(answer); L i Sting using System; using System.Net; using System.Net.Sockets; using System.Text; class FindMask public static void Main () byte[] data = new byte[1024]; int recv; Socket host = new Socket(AddressFamily.InterNetwork, 457
30 Part 3 _ SocketType.Raw, ProtocolType.Icmp); IPEndPoint iep = new IPEndPoint(IPAddress.Broadcast, 0); EndPoint ep = (EndPoint)iep; ICMP packet = new ICMP(); packet.type = 0x11; packet.code = 0x00; packet.checksum = 0; Buffer.BlockCopy(BitConverter.GetBytes(1), 0, packet.message, 0, 2); Buffer.BlockCopy(BitConverter.GetBytes(1), 0, packet.message, 2, 2); Buffer.BlockCopy(BitConverter.GetBytes(0), 0, packet.message, 4, 4); packet.messagesize = 8; int packetsize = packet.messagesize + 4; UInt16 chksm = packet.getchecksum(); packet.checksum = chksm; host.setsocketoption(socketoptionlevel.socket, SocketOptionName.ReceiveTimeout, 3000); host.setsocketoption(socketoptionlevel.socket, SocketOptionName.Broadcast, 1); host.sendto(packet.getbytes(), packetsize, SocketFlags.None, iep); try data = new byte[1024]; recv = host.receivefrom(data, ref ep); catch (SocketException) Console.WriteLine("Unable to determine subnet mask for this subnet"); return; ICMP response = new ICMP(data, recv); Console.WriteLine("Received an ICMP type 0 packet", response.type); long answer = BitConverter.ToUInt32(response.Message, 4); IPAddress netmask = new IPAddress(answer); Console.WriteLine("The subnet mask for this subnet is: 0", netmask.tostring()); 458
31 Chapter 11 _ csc FindMask.cs ICMP.cs host.setsocketoption(socketoptionlevel.socket, SocketOptionName.ReceiveTimeout, 3000); host.setsocketoption(socketoptionlevel.socket, SocketOptionName.Broadcast, 1); C:\>FindMask Received an ICMP type 18 packet The subnet mask for this subnet is: C:\> 459
32 Part 3 _ L i Sting C:\>windump -X icmp windump listening on\device\packet_el90x1 13:21: > : icmp: address mask request 0x b c55 c0a E...U...lU... 0x0010 ffff ffff 1100 ecff :21: > : icmp: address mask is 0xfffffc00 0x ff01 23ff c0a E...a...#... 0x0010 c0a effe ffff fc x :21: > : icmp: address mask is 0xfffffc00 0x db ff01 f74f c0a8 018f E...O... 0x0010 c0a effe ffff fc x :21: > : icmp: address mask is 0xfffffc00 0x de c01 6afc c0a E...<.j.... 0x0010 c0a effe ffff fc x x packets received by filter 0 packets dropped by kernel C:\> 460
33 Chapter 11 _ 8 461
3ÆÄÆ®-14
chapter 14 HTTP >>> 535 Part 3 _ 1 L i Sting using System; using System.Net; using System.Text; class DownloadDataTest public static void Main (string[] argv) WebClient wc = new WebClient(); byte[] response
bn2019_2
arp -a Packet Logging/Editing Decode Buffer Capture Driver Logging: permanent storage of packets for offline analysis Decode: packets must be decoded to human readable form. Buffer: packets must temporarily
02 C h a p t e r Java
02 C h a p t e r Java Bioinformatics in J a va,, 2 1,,,, C++, Python, (Java),,, (http://wwwbiojavaorg),, 13, 3D GUI,,, (Java programming language) (Sun Microsystems) 1995 1990 (green project) TV 22 CHAPTER
Microsoft PowerPoint - 04-UDP Programming.ppt
Chapter 4. UDP Dongwon Jeong djeong@kunsan.ac.kr http://ist.kunsan.ac.kr/ Dept. of Informatics & Statistics 목차 UDP 1 1 UDP 개념 자바 UDP 프로그램작성 클라이언트와서버모두 DatagramSocket 클래스로생성 상호간통신은 DatagramPacket 클래스를이용하여
rmi_박준용_final.PDF
(RMI) - JSTORM http://wwwjstormpekr (RMI)- Document title: Document file name: Revision number: Issued by: Document Information (RMI)- rmi finaldoc Issue Date: Status:
SMB_ICMP_UDP(huichang).PDF
SMB(Server Message Block) UDP(User Datagram Protocol) ICMP(Internet Control Message Protocol) SMB (Server Message Block) SMB? : Microsoft IBM, Intel,. Unix NFS. SMB client/server. Client server request
비긴쿡-자바 00앞부속
IT COOKBOOK 14 Java P r e f a c e Stay HungryStay Foolish 3D 15 C 3 16 Stay HungryStay Foolish CEO 2005 L e c t u r e S c h e d u l e 1 14 PPT API C A b o u t T h i s B o o k IT CookBook for Beginner Chapter
<C0CCBCBCBFB52DC1A4B4EBBFF82DBCAEBBE7B3EDB9AE2D313939392D382E687770>
i ii iii iv v vi 1 2 3 4 가상대학 시스템의 국내외 현황 조사 가상대학 플랫폼 개발 이상적인 가상대학시스템의 미래상 제안 5 웹-기반 가상대학 시스템 전통적인 교수 방법 시간/공간 제약을 극복한 학습동기 부여 교수의 일방적인 내용전달 교수와 학생간의 상호작용 동료 학생들 간의 상호작용 가상대학 운영 공지사항,강의록 자료실, 메모 질의응답,
PowerPoint 프레젠테이션
@ Lesson 2... ( ). ( ). @ vs. logic data method variable behavior attribute method field Flow (Type), ( ) member @ () : C program Method A ( ) Method B ( ) Method C () program : Java, C++, C# data @ Program
Microsoft PowerPoint - 09-EDU-15-채팅 프로그래밍
15. 채팅프로그램 순천향대학교컴퓨터학부이상정 1 학습내용 사용자인터페이스 프로그램구성 TCP 연결설정프로그램 서버연결설정 클라이언트연결설정 TCP 데이터송수신 순천향대학교컴퓨터학부이상정 2 사용자인터페이스, Form 클래스 순천향대학교컴퓨터학부이상정 3 1:1 채팅프로그램 한프로그램이동시에서버와클라이언트로동작 프로그램시작시서버로동작 서버소켓생성하고상대방접속요청대기
PowerPoint 프레젠테이션
@ Lesson 3 if, if else, if else if, switch case for, while, do while break, continue : System.in, args, JOptionPane for (,, ) @ vs. logic data method variable Data Data Flow (Type), ( ) @ Member field
JMF3_심빈구.PDF
JMF JSTORM http://wwwjstormpekr Issued by: < > Revision: Document Information Document title: Document file name: Revision number: Issued by: JMF3_ doc Issue Date:
Microsoft PowerPoint - CSharp-15-채팅
Socket 클래스이용한채팅프로그램 스트림방식의채팅프로그램 헬퍼클래스방식의채팅프로그램 순천향대학교컴퓨터학부이상정 1 학습내용 Socket 클래스이용한채팅프로그램 스트림방식의채팅프로그램 헬퍼클래스방식의채팅프로그램 순천향대학교컴퓨터학부이상정 2 Socket 클래스이용한채팅프로그램 순천향대학교컴퓨터학부이상정 3 1:1 채팅프로그램 한프로그램이동시에서버와클라이언트로동작
Microsoft PowerPoint - Supplement-03-TCP Programming.ppt [호환 모드]
![Microsoft PowerPoint - Supplement-03-TCP Programming.ppt [호환 모드]](/thumbs/81/82761220.jpg "Microsoft PowerPoint - Supplement-03-TCP Programming.ppt [호환 모드]")
- Socket Programming in Java - 목차 소켓소개 자바에서의 TCP 프로그램작성방법 주요클래스와메소드 HTTP 프로토콜을이용한예제 에코프로그램 Q/A 에코프로그램 - EchoServer 에코프로그램 - EchoClient TCP Programming 1 소켓소개 IP, Port, and Socket 포트 (Port): 전송계층에서통신을수행하는응용프로그램을찾기위한주소
Microsoft PowerPoint - 03-TCP Programming.ppt
Chapter 3. - Socket in Java - 목차 소켓소개 자바에서의 프로그램작성방법 주요클래스와메소드 HTTP 프로토콜을이용한예제 에코프로그램 에코프로그램 - EchoServer 에코프로그램 - EchoClient Q/A 1 1 소켓소개 IP,, and Socket 포트 (): 전송계층에서통신을수행하는응용프로그램을찾기위한주소 소켓 (Socket):
01_피부과Part-01
PART 1 CHAPTER 01 3 PART 4 C H A P T E R 5 PART CHAPTER 02 6 C H A P T E R CHAPTER 03 7 PART 8 C H A P T E R 9 PART 10 C H A P T E R 11 PART 12 C H A P T E R 13 PART 14 C H A P T E R TIP 15 PART TIP TIP
Analytics > Log & Crash Search > Unity ios SDK [Deprecated] Log & Crash Unity ios SDK. TOAST SDK. Log & Crash Unity SDK Log & Crash Search. Log & Cras
![Analytics > Log & Crash Search > Unity ios SDK [Deprecated] Log & Crash Unity ios SDK. TOAST SDK. Log & Crash Unity SDK Log & Crash Search. Log & Cras](/thumbs/101/151500399.jpg "Analytics > Log & Crash Search > Unity ios SDK [Deprecated] Log & Crash Unity ios SDK. TOAST SDK. Log & Crash Unity SDK Log & Crash Search. Log & Cras")
Analytics > Log & Crash Search > Unity ios SDK [Deprecated] Log & Crash Unity ios SDK. TOAST SDK. Log & Crash Unity SDK Log & Crash Search. Log & Crash Unity SDK... Log & Crash Search. - Unity3D v4.0 ios
자바-11장N'1-502
C h a p t e r 11 java.net.,,., (TCP/IP) (UDP/IP).,. 1 ISO OSI 7 1977 (ISO, International Standards Organization) (OSI, Open Systems Interconnection). 6 1983 X.200. OSI 7 [ 11-1] 7. 1 (Physical Layer),
mytalk
한국정보보호학회소프트웨어보안연구회 총괄책임자 취약점분석팀 안준선 ( 항공대 ) 도경구 ( 한양대 ) 도구개발팀도경구 ( 한양대 ) 시큐어코딩팀 오세만 ( 동국대 ) 전체적인 그림 IL Rules Flowgraph Generator Flowgraph Analyzer 흐름그래프 생성기 흐름그래프 분석기 O parser 중간언어 O 파서 RDL
hd1300_k_v1r2_Final_.PDF
Starter's Kit for HelloDevice 1300 Version 11 1 2 1 2 3 31 32 33 34 35 36 4 41 42 43 5 51 52 6 61 62 Appendix A (cross-over) IP 3 Starter's Kit for HelloDevice 1300 1 HelloDevice 1300 Starter's Kit HelloDevice
11 템플릿적용 - Java Program Performance Tuning (김명호기술이사)
Java Program Performance Tuning ( ) n (Primes0) static List primes(int n) { List primes = new ArrayList(n); outer: for (int candidate = 2; n > 0; candidate++) { Iterator iter = primes.iterator(); while
PowerPoint 프레젠테이션
(Host) set up : Linux Backend RS-232, Ethernet, parallel(jtag) Host terminal Target terminal : monitor (Minicom) JTAG Cross compiler Boot loader Pentium Redhat 9.0 Serial port Serial cross cable Ethernet
시스코 무선랜 설치운영 매뉴얼(AP1200s_v1.1)
[ Version 1.3 ] Access Point,. Access Point IP 10.0.0.1, Subnet Mask 255.255.255.224, DHCP Client. DHCP Server IP IP,, IP 10.0.0.X. (Tip: Auto Sensing Straight, Cross-over.) step 1]. step 2] LAN. step
컴퓨터네트워크
프로그램설명 (TcpClient) 1 행 ~5 행.NET classes IOException Encoding IPAddress class Sockets 11 행 ~22 행 서버가클라이언트와같은컴퓨터에서실행되므로서버의주소는 Loopback(127.0.0.1) 으로지정 연결하려는서버의 port 번호 서버로송신할메시지 String 객체메시지는 Byte 배열로 Encoding
1217 WebTrafMon II
(1/28) (2/28) (10 Mbps ) Video, Audio. (3/28) 10 ~ 15 ( : telnet, ftp ),, (4/28) UDP/TCP (5/28) centralized environment packet header information analysis network traffic data, capture presentation network
01....b74........62
4 5 CHAPTER 1 CHAPTER 2 CHAPTER 3 6 CHAPTER 4 CHAPTER 5 CHAPTER 6 7 1 CHAPTER 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50
¾Ë·¹¸£±âÁöħ¼�1-ÃÖÁ¾
Chapter 1 Chapter 1 Chapter 1 Chapter 2 Chapter 2 Chapter 2 Chapter 2 Chapter 2 Chapter 3 Chapter 3 Chapter 3 Chapter 3 Chapter 3 Chapter 3 Chapter 3 Chapter 3 Chapter 4 Chapter 4
(291)본문7
2 Chapter 46 47 Chapter 2. 48 49 Chapter 2. 50 51 Chapter 2. 52 53 54 55 Chapter 2. 56 57 Chapter 2. 58 59 Chapter 2. 60 61 62 63 Chapter 2. 64 65 Chapter 2. 66 67 Chapter 2. 68 69 Chapter 2. 70 71 Chapter
신림프로그래머_클린코드.key
CLEAN CODE 6 11st Front Dev. Team 6 1. 2. 3. checked exception 4. 5. 6. 11 : 2 4 : java (50%), javascript (35%), SQL/PL-SQL (15%) : Spring, ibatis, Oracle, jquery ? , (, ) ( ) 클린코드를 무시한다면 . 6 1. ,,,!
자바로
! from Yongwoo s Park ZIP,,,,,,,??!?, 1, 1 1, 1 (Snow Ball), /,, 5,,,, 3, 3, 5, 7,,,,,,! ,, ZIP, ZIP, images/logojpg : images/imageszip :, backgroundjpg, shadowgif, fallgif, ballgif, sf1gif, sf2gif, sf3gif,
컴퓨터네트워크
컴퓨터네트워크 TCP/IP Socket Programming 강의내용 : TCP/IP Socket 프로그래밍 지난날의대학교컴퓨터네트워크과목은대부분프로그래밍실습이없이 이론적인분석과추상적인기술을다루는과목이었다. 간혹교과서에프로그램코드가소개되기도하지만그것은실습을위한 것이라기보다는설명을돕기위한것에불과한경우가많았다. 오늘날인터넷의발달로일상생활속에서네트워크를접하게되었고수천만대의컴퓨터들이인터넷을통해서서로연결되어있다.
À©µµ³×Æ®¿÷ÇÁ·Î±×·¡¹Ö4Àå_ÃÖÁ¾
P a 02 r t Chapter 4 TCP Chapter 5 Chapter 6 UDP Chapter 7 Chapter 8 GUI C h a p t e r 04 TCP 1 3 1 2 3 TCP TCP TCP [ 4 2] listen connect send accept recv send recv [ 4 1] PC Internet Explorer HTTP HTTP
OOP 소개
OOP : @madvirus, : madvirus@madvirus.net : @madvirus : madvirus@madvirus.net ) ) ) 7, 3, JSP 2 ? 3 case R.id.txt_all: switch (menu_type) { case GROUP_ALL: showrecommend("month"); case GROUP_MY: type =
untitled
CAN BUS RS232 Line Ethernet CAN H/W FIFO RS232 FIFO IP ARP CAN S/W FIFO TERMINAL Emulator COMMAND Interpreter ICMP TCP UDP PROTOCOL Converter TELNET DHCP C2E SW1 CAN RS232 RJ45 Power
12-file.key
11 (String).. java.lang.stringbuffer. s String s = "abcd"; s = s + "e"; a b c d e a b c d e ,., "910359,, " "910359" " " " " (token) (token),, (delimiter). java.util.stringtokenizer String s = "910359,,
T100MD+
User s Manual 100% ) ( x b a a + 1 RX+ TX+ DTR GND TX+ RX+ DTR GND RX+ TX+ DTR GND DSR RX+ TX+ DTR GND DSR [ DCE TYPE ] [ DCE TYPE ] RS232 Format Baud 1 T100MD+
03장.스택.key
---------------- DATA STRUCTURES USING C ---------------- 03CHAPTER 1 ? (stack): (LIFO:Last-In First-Out) 2 : top : ( index -1 ),,, 3 : ( ) ( ) -> ->. ->.... 4 Stack ADT : (LIFO) : init():. is_empty():
61 62 63 64 234 235 p r i n t f ( % 5 d :, i+1); g e t s ( s t u d e n t _ n a m e [ i ] ) ; if (student_name[i][0] == \ 0 ) i = MAX; p r i n t f (\ n :\ n ); 6 1 for (i = 0; student_name[i][0]!= \ 0&&
<4D F736F F F696E74202D20C1A63235C0E520B3D7C6AEBFF6C5A920C7C1B7CEB1D7B7A1B9D628B0ADC0C729205BC8A3C8AF20B8F0B5E55D>
Power Java 제 25 장네트워크프로그래밍 이번장에서학습할내용 네트워크프로그래밍의개요 URL 클래스 TCP를이용한통신 TCP를이용한서버제작 TCP를이용한클라이언트제작 UDP 를이용한통신 자바를이용하여서 TCP/IP 통신을이용하는응응프로그램을작성하여봅시다. 서버와클라이언트 서버 (Server): 사용자들에게서비스를제공하는컴퓨터 클라이언트 (Client):
Chap12
12 12Java RMI 121 RMI 2 121 RMI 3 - RMI, CORBA 121 RMI RMI RMI (remote object) 4 - ( ) UnicastRemoteObject, 121 RMI 5 class A - class B - ( ) class A a() class Bb() 121 RMI 6 RMI / 121 RMI RMI 1 2 ( 7)
Chapter11OSPF
OSPF 111 OSPF Link state Interior Gateway Protocol OSPF 1988 IETF OSPF workgroup OSPF RFC 2383 version 2 Chapter OSPF Version 2 OSPFIGP AS 1 1111 Convergence Traffic Distance Vector Link state OSPF (Flooding),
05-class.key
5 : 2 (method) (public) (private) (interface) 5.1 (Method), (public method) (private method) (constructor), 3 4 5.2 (client). (receiver)., System.out.println("Hello"); (client object) (receiver object)
1998년~1999년의 일기
1998년~1999년의 일기 자주달개비 소개글 2012년 4월 어느 날 14년 전에 끄적거려 놓았던 쾌쾌묶은 낡은 노트를 발견하고 이곳에 얾겨 적어보았다. 다시 정리하면서 지금까지 어떻게 살아왔는지에 대한 정리가 되는 듯하여 의미있는 일이 되었다. 목차 1 1998.9.28(주인없는 집) 5 2 1998.9.29(돌아가고 싶은 그 때) 9 3 1998.10.3(아버지의
초보자를 위한 C# 21일 완성
C# 21., 21 C#., 2 ~ 3 21. 2 ~ 3 21.,. 1~ 2 (, ), C#.,,.,., 21..,.,,, 3. A..,,.,.. Q&A.. 24 C#,.NET.,.,.,. Visual C# Visual Studio.NET,..,. CD., www. TeachYour sel f CSharp. com., ( )., C#.. C# 1, 1. WEEK
MPLAB C18 C
MPLAB C18 C MPLAB C18 MPLAB C18 C MPLAB C18 C #define START, c:\mcc18 errorlevel{0 1} char isascii(char ch); list[list_optioin,list_option] OK, Cancel , MPLAB IDE User s Guide MPLAB C18 C
PowerPoint 프레젠테이션
@ Lesson 4 (Object) (Class) (Instance) (Method) (Constructor) Memory 1 UML 1 @ & 1 (Real World) (Software World) @ &.. () () @ & 2 (Real World) (Software World) OOA/ Modeling Abstraction Instantiation
PART 8 12 16 21 25 28
PART 8 12 16 21 25 28 PART 34 38 43 46 51 55 60 64 PART 70 75 79 84 89 94 99 104 PART 110 115 120 124 129 134 139 144 PART 150 155 159 PART 8 1 9 10 11 12 2 13 14 15 16 3 17 18 19 20 21 4 22 23 24 25 5
UDP Flooding Attack 공격과 방어
황 교 국 (fullc0de@gmail.com) SK Infosec Co., Inc MSS Biz. Security Center Table of Contents 1. 소개...3 2. 공격 관련 Protocols Overview...3 2.1. UDP Protocol...3 2.2. ICMP Protocol...4 3. UDP Flood Test Environment...5
Java
Java http://cafedaumnet/pway Chapter 1 1 public static String format4(int targetnum){ String strnum = new String(IntegertoString(targetNum)); StringBuffer resultstr = new StringBuffer(); for(int i = strnumlength();
Something that can be seen, touched or otherwise sensed
Something that can be seen, touched or otherwise sensed Things about an object Weight Height Material Things an object does Pen writes Book stores words Water have Fresh water Rivers Oceans have
Subnet Address Internet Network G Network Network class B networ
Structure of TCP/IP Internet Internet gateway (router) Internet Address Class A Class B Class C 0 8 31 0 netid hostid 0 16 31 1 0 netid hostid 0 24 31 1 1 0 netid hostid Network Address : (A) 1 ~ 127,
TCP.IP.ppt
TCP/IP TCP/IP TCP/IP TCP/IP TCP/IP Internet Protocol _ IP Address Internet Protocol _ Subnet Mask Internet Protocol _ ARP(Address Resolution Protocol) Internet Protocol _ RARP(Reverse Address Resolution
The Pocket Guide to TCP/IP Sockets: C Version
1 목포해양대해양컴퓨터공학과 UDP 소켓 네트워크프로그램설계 4 장 2 목포해양대해양컴퓨터공학과 목차 제 4장 UDP 소켓 4.1 UDP 클라이언트 4.2 UDP 서버 4.3 UDP 소켓을이용한데이터송신및수신 4.4 UDP 소켓의연결 3 목포해양대해양컴퓨터공학과 UDP 소켓의특징 UDP 소켓의특성 신뢰할수없는데이터전송방식 목적지에정확하게전송된다는보장이없음.
13 CHAPTER 13 CHAPTER 2 3 4 5 6 7 06 android:background="#ffffffff"> 07 Network seminar.key
Intro to Network .. 2 4 ( ) ( ). ?!? ~! This is ~ ( ) /,,,???? TCP/IP Application Layer Transfer Layer Internet Layer Data Link Layer Physical Layer OSI 7 TCP/IP Application Layer Transfer Layer 3 4 Network
Microsoft Word - KPMC-400,401 SW 사용 설명서
LKP Ethernet Card SW 사용설명서 Version Information Tornado 2.0, 2.2 알 림 여기에실린내용은제품의성능향상과신뢰도의증대를위하여예고없이변경될수도있습니다. 여기에실린내용의일부라도엘케이일레븐의사전허락없이어떠한유형의매체에복사되거나저장될수없으며전기적, 기계적, 광학적, 화학적인어떤방법으로도전송될수없습니다. 엘케이일레븐경기도성남시중원구상대원동
#KM560
KM-560 KM-560-7 PARTS BOOK KM-560 KM-560-7 INFORMATION A. Parts Book Structure of Part Book Unique code by mechanism Unique name by mechanism Explode view Ref. No. : Unique identifcation number by part
o o o 8.2.1. Host Error 8.2.2. Message Error 8.2.3. Recipient Error 8.2.4. Error 8.2.5. Host 8.5.1. Rule 8.5.2. Error 8.5.3. Retry Rule 8.11.1. Intermittently
......
Life & Power Press P R E F A C E P R E F A C E P R E F A C E C O N T E N T S 01 02 03 01 04 05 06 07 08 09 02 C O N T E N T S C O N T E N T S 10 11 12 03 13 01 01 01 12 CHAPTER 01 O O O 13 PART 01 14
untitled
- -, (insert) (delete) - - (insert) (delete) (top ) - - (insert) (rear) (delete) (front) A A B top A B C top push(a) push(b) push(c) A B top pop() top A B D push(d) top #define MAX_STACK_SIZE 100 int
쉽게 풀어쓴 C 프로그래밍
Power Java 제 23 장스레드 이번장에서학습할내용 스레드의개요 스레드의생성과실행 스레드상태 스레드의스케줄링 스레드간의조정 스레드는동시에여러개의프로그램을실행하는효과를냅니다. 멀티태스킹 멀티태스킹 (muli-tasking) 는여러개의애플리케이션을동시에실행하여서컴퓨터시스템의성능을높이기위한기법 스레드란? 다중스레딩 (multi-threading) 은하나의프로그램이동시에여러가지작업을할수있도록하는것
chapter4
Basic Netw rk 1. ก ก ก 2. 3. ก ก 4. ก 2 1. 2. 3. 4. ก 5. ก 6. ก ก 7. ก 3 ก ก ก ก (Mainframe) ก ก ก ก (Terminal) ก ก ก ก ก ก ก ก 4 ก (Dumb Terminal) ก ก ก ก Mainframe ก CPU ก ก ก ก 5 ก ก ก ก ก ก ก ก ก ก
PWR PWR HDD HDD USB USB Quick Network Setup Guide xdsl/cable Modem PC DVR 1~3 1.. DVR DVR IP xdsl Cable xdsl Cable PC PC DDNS (
PWR PWR HDD HDD USB USB Quick Network Setup Guide xdsl/cable Modem PC DVR 1~3 1.. DVR DVR IP xdsl Cable xdsl Cable PC PC DDNS (http://ddns.hanwha-security.com) Step 1~5. Step, PC, DVR Step 1. Cable Step
OPCTalk for Hitachi Ethernet 1 2. Path. DCOMwindow NT/2000 network server. Winsock update win95. . . 3 Excel CSV. Update Background Thread Client Command Queue Size Client Dynamic Scan Block Block
1. GigE Camera Interface를 위한 최소 PC 사양 CPU : Intel Core 2 Duo, 2.4GHz이상 RAM : 2GB 이상 LANcard : Intel PRO/1000xT 이상 VGA : PCI x 16, VRAM DDR2 RAM 256MB
Revision 1.0 Date 11th Nov. 2013 Description Established. Page Page 1 of 9 1. GigE Camera Interface를 위한 최소 PC 사양 CPU : Intel Core 2 Duo, 2.4GHz이상 RAM : 2GB 이상 LANcard : Intel PRO/1000xT 이상 VGA : PCI x
The Pocket Guide to TCP/IP Sockets: C Version
얇지만얇지않은 TCP/IP 소켓프로그래밍 C 2 판 4 장 UDP 소켓 제 4 장 UDP 소켓 4.1 UDP 클라이언트 4.2 UDP 서버 4.3 UDP 소켓을이용한데이터송싞및수싞 4.4 UDP 소켓의연결 UDP 소켓의특징 UDP 소켓의특성 싞뢰할수없는데이터젂송방식 목적지에정확하게젂송된다는보장이없음. 별도의처리필요 비연결지향적, 순서바뀌는것이가능 흐름제어 (flow
11강-힙정렬.ppt
11 (Heap ort) leejaku@shinbiro.com Topics? Heap Heap Opeations UpHeap/Insert, DownHeap/Extract Binary Tree / Index Heap ort Heap ort 11.1 (Priority Queue) Operations ? Priority Queue? Priority Queue tack
第 1 節 組 織 11 第 1 章 檢 察 의 組 織 人 事 制 度 등 第 1 項 大 檢 察 廳 第 1 節 組 대검찰청은 대법원에 대응하여 수도인 서울에 위치 한다(검찰청법 제2조,제3조,대검찰청의 위치와 각급 검찰청의명칭및위치에관한규정 제2조). 대검찰청에 검찰총장,대
第 1 章 檢 察 의 組 織 人 事 制 度 등 第 1 節 組 織 11 第 1 章 檢 察 의 組 織 人 事 制 度 등 第 1 項 大 檢 察 廳 第 1 節 組 대검찰청은 대법원에 대응하여 수도인 서울에 위치 한다(검찰청법 제2조,제3조,대검찰청의 위치와 각급 검찰청의명칭및위치에관한규정 제2조). 대검찰청에 검찰총장,대검찰청 차장검사,대검찰청 검사,검찰연구관,부
ilist.add(new Integer(1))과 같이 사용하지 않고 ilist.add(1)과 같이 사용한 것은 자바 5.0에 추가된 기본 자료형과 해당 객체 자료 형과의 오토박싱/언박싱 기능을 사용한 것으로 오토박싱이란 자바 컴파일러가 객체를 요구하는 곳에 기본 자료형
바에 제네릭스(generics)를 도입하기 위한 연구는 이미 8년 전인 1996년부터라고 한다. 실제로 자바에 제네릭스를 도입하 는 몇 가지 방안들이 논문으로 나오기 시작한 것이 1998년 초임을 감 안하면 무려 8년이 지난 후에야 자바 5.0에 전격 채택되었다는 것은 이것이 얼마나 어려운 일이었나 하는 것을 보여준다. 자바의 스펙을 결정하는 표준화 절차인
NoSQL
MongoDB Daum Communications NoSQL Using Java Java VM, GC Low Scalability Using C Write speed Auto Sharding High Scalability Using Erlang Read/Update MapReduce R/U MR Cassandra Good Very Good MongoDB Good
제11장 프로세스와 쓰레드
제9장자바쓰레드 9.1 Thread 기초 (1/5) 프로그램 명령어들의연속 (a sequence of instruction) 프로세스 / Thread 실행중인프로그램 (program in execution) 프로세스생성과실행을위한함수들 자바 Thread 2 9.1 Thread 기초 (2/5) 프로세스단위작업의문제점 프로세스생성시오버헤드 컨텍스트스위치오버헤드
5장.key
JAVA Programming 1 (inheritance) 2!,!! 4 3 4!!!! 5 public class Person {... public class Student extends Person { // Person Student... public class StudentWorker extends Student { // Student StudentWorker...!
자바 프로그래밍
5 (kkman@mail.sangji.ac.kr) (Class), (template) (Object) public, final, abstract [modifier] class ClassName { // // (, ) Class Circle { int radius, color ; int x, y ; float getarea() { return 3.14159
untitled
CAN BUS RS232 Line CAN H/W FIFO RS232 FIFO CAN S/W FIFO TERMINAL Emulator COMMAND Interpreter PROTOCOL Converter CAN2RS232 Converter Block Diagram > +- syntax
Mobile Service > IAP > Android SDK [ ] IAP SDK TOAST SDK. IAP SDK. Android Studio IDE Android SDK Version (API Level 10). Name Reference V
![Mobile Service > IAP > Android SDK [ ] IAP SDK TOAST SDK. IAP SDK. Android Studio IDE Android SDK Version (API Level 10). Name Reference V](/thumbs/103/160143957.jpg "Mobile Service > IAP > Android SDK [ ] IAP SDK TOAST SDK. IAP SDK. Android Studio IDE Android SDK Version (API Level 10). Name Reference V")
Mobile Service > IAP > Android SDK IAP SDK TOAST SDK. IAP SDK. Android Studio IDE 2.3.3 Android SDK Version 2.3.3 (API Level 10). Name Reference Version License okhttp http://square.github.io/okhttp/ 1.5.4
PowerPoint Presentation
객체지향프로그래밍 클래스, 객체, 메소드 ( 실습 ) 손시운 ssw5176@kangwon.ac.kr 예제 1. 필드만있는클래스 텔레비젼 2 예제 1. 필드만있는클래스 3 예제 2. 여러개의객체생성하기 4 5 예제 3. 메소드가추가된클래스 public class Television { int channel; // 채널번호 int volume; // 볼륨 boolean
untitled
Push... 2 Push... 4 Push... 5 Push... 13 Push... 15 1 FORCS Co., LTD A Leader of Enterprise e-business Solution Push (Daemon ), Push Push Observer. Push., Observer. Session. Thread Thread. Observer ID.
PART 1 CHAPTER 1 Chapter 1 Note 4 Part 1 5 Chapter 1 AcctNum = Table ("Customer").Cells("AccountNumber") AcctNum = Customer.AccountNumber Note 6 RecordSet RecordSet Part 1 Note 7 Chapter 1 01:
K&R2 Reference Manual 번역본
typewriter structunion struct union if-else if if else if if else if if if if else else ; auto register static extern typedef void char short int long float double signed unsigned const volatile { } struct
Microsoft Word - ZIO-AP1500N-Manual.doc
목 차 사용자 설명서 1 장 제품 소개 ------------------------------ 1 2 장 제품 내용물 ---------------------------- 2 3 장 AP 연결 설정 방법 ------------------------ 3 4 장 동작 방식별 설정 방법 --------------------- 7 (1) 엑세스 포인트 모드 -----------------------
untitled
Step Motor Device Driver Embedded System Lab. II Step Motor Step Motor Step Motor source Embedded System Lab. II 2 open loop, : : Pulse, 1 Pulse,, -, 1 +5%, step Step Motor (2),, Embedded System Lab. II
01-OOPConcepts(2).PDF
Object-Oriented Programming Concepts Tel: 02-824-5768 E-mail: hhcho@selabsoongsilackr? OOP (Object) (Encapsulation) (Message) (Class) (Inheritance) (Polymorphism) (Abstract Class) (Interface) 2 1 + = (Dependency)
SRC PLUS 제어기 MANUAL
,,,, DE FIN E I N T R E A L L O C E N D SU B E N D S U B M O TIO
강의10
Computer Programming gdb and awk 12 th Lecture 김현철컴퓨터공학부서울대학교 순서 C Compiler and Linker 보충 Static vs Shared Libraries ( 계속 ) gdb awk Q&A Shared vs Static Libraries ( 계속 ) Advantage of Using Libraries Reduced
USB USB DV25 DV25 REC SRN-475S REC SRN-475S LAN POWER LAN POWER Quick Network Setup Guide xdsl/cable Modem PC DVR 1~3 1.. DVR DVR IP xdsl Cable xdsl C
USB USB DV25 DV25 REC SRN-475S REC SRN-475S LAN POWER LAN POWER Quick Network Setup Guide xdsl/cable Modem PC DVR 1~3 1.. DVR DVR IP xdsl Cable xdsl Cable PC PC Step 1~5. Step, PC, DVR Step 1. Cable Step
thesis
( Design and Implementation of a Generalized Management Information Repository Service for Network and System Management ) ssp@nile nile.postech.ac..ac.kr DPE Lab. 1997 12 16 GMIRS GMIRS GMIRS prototype
PowerPoint Presentation
객체지향프로그래밍 인터페이스, 람다식, 패키지 ( 실습 ) 손시운 ssw5176@kangwon.ac.kr 예제 1. 홈네트워킹 public interface RemoteControl { public void turnon(); // 가전제품을켠다. public void turnoff(); // 가전제품을끈다. 인터페이스를구현 public class Television
SYN flooding
Hacking & Security Frontier SecurityFirst SYN flooding - SYN flooding 공격의원리와코드그리고대응 by amur, myusgun, leemeca 2008. 09. myusgun Agenda 개요...3 원리...3 위협...4 잠깐! - 문서에관하여...4 이문서는...4 Code...4 대응방안...4 소스코드...5
歯JavaExceptionHandling.PDF
(2001 3 ) from Yongwoo s Park Java Exception Handling Programming from Yongwoo s Park 1 Java Exception Handling Programming from Yongwoo s Park 2 1 4 11 4 4 try/catch 5 try/catch/finally 9 11 12 13 13