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Way of encapsulating in transport mode with ESP: Way of encapsulating in tunnel mode with ESP: You can establish an IPSec network on Linux by compiling the core in an adapted way (KLIPS module instead of the native IPSec code) and by using the free solution FreeS/WAN (http://www.freeswan.org). The combined use of AH and ESP is not included in the development of FreeS/WAN: AH is no longer supported by FreeS/WAN. AH is not widely used, and IPSec's complexity due to the combined use of the two methods is not a desirable improvement (see Schneier and Ferguson's evaluation paper at: http://www.macfergus.com/pub/IPsec.html). If you haven't created a pair of keys with RSA, type in: $ ipsec newhostkey --output /etc/ipsec.secrets --hostname www.mymachine.com Once the installation done, the ipsec tool is available and will enable you to check, with the ipsec verify command, that the service is properly available. Net-to-Net Configuration: Between two machines (left/right) on IPSec, type on the first one: $ ipsec showhostkey –left On the second one, type: $ ipsec showhostkey --right On the first machine, edit the /etc/ipsec.conf configuration file on both machines and modify the information following the example below. Left and right are the machine on which FreeS/WAN is installed: conn net-to-net left=192.0.2.2 leftsubnet=192.0.2.128/29 leftid=@xy.example.com leftrsasigkey=0s1LgR7/oUM... # completer leftnexthop=%defaultroute right=192.0.2.9 rightsubnet=10.0.0.0/24 rightid=@ab.example.com rightrsasigkey=0sAQOqH55O... # completer rightnexthop=%defaultroute auto=add The Hackademy DMP -206/209- SYSDREAM
Contact 1 Villa du clos de Malevart 75011 Paris. Tel: 01 40 21 04 28 e-mail: hackademy@thehackademy.net 26 bis rue jeanne d'Arc 94160 St Mandé Tel: 01 53 66 95 28 e-mail: abonnements@dmpfrance.com The Hackademy DMP -207/209- SYSDREAM
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Hack security “pro”
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Authors For their contribution to t
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Chapter IV: Web Vulnerabilities....
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INTRODUCTION TO TCP/IP NETWORKS Net
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In case of reception, each layer wi
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ARP heading: The Hackademy DMP -11/
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Version: 4 bits. The version field
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TCP header: Source Port: 16 bits. T
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TCP/UDP Port Notions: Multiplexing/
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Start the MS-DOS control interface
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CHAPTER I INFORMATION ACQUISITION T
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expires: 2005-10-28 11:28:29 create
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In the answer field you will find:
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nmap -sP 192.168.124.0/24 Starting
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C) Fingerprinting the system The nm
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It is also possible to specify seve
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SMTP : Simple Mail Transfer Protoco
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SNMP : Simple Network Management Pr
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Here is a scan report obtained with
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# nmap 3.50 scan initiated Wed May
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CHAPTER II CLIENT VULNERABILITIES T
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File viruses: These viruses attack
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Retroviruses are a bit more aggress
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However, do check in the start file
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Creating a hidden gateway : But the
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infallible. It consists in associat
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DOS commands if conditional pluggin
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Each one of these zones can be conf
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The javascript code destined to dow
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The wizard will ask you the locatio
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CHAPTER III NETWORKS VULNERABILITIE
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Here, the connection between the ro
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Using the "Follow TCP Stream" optio
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You have just created a new filter.
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This handshake takes place as follo
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Third step Illustration 3: ACK To c
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The methodology of this type of att
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The case of the UDP protocol Unlike
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nc -l -v -n -p 887 Injection of com
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Let's try to connect again from mac
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We can see that Ethereal has seen i
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Conclusion The covert channel princ
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It is the IP protocol that is going
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We will simultaneously launch the p
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5.Connections Hijacking We are goin
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Let us now display the contents of
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B) DNS hijacking The DNS protocol i
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ssh2 protection The server's public
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B) SSL The SSL protocol functions w
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Recent viruses use the resources of
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1.Site Mapping The first thing a ha
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Scan_web.php Scan_web.php is a PHP
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The phpinfo() function gives the ha
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ack to an error message */ if ($ok
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System() Function The System() func
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Uploading via PHP Quite often, one
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inc.php file page1.php file By ty
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There are other functions of the sa
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i=0; j=0; while (data[i] != '=') {
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system("/usr/bin/sendmail -t test@t
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In all cases, it is also important
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It is therefore vital to understand
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The error means that the SQL reques
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} else{ } $query = "UPDATE users SE
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And here is the result: We are now
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We can see that CrashFr is now in b
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Once the client has entered his pse
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CHAPTER V APPLICATION VULNERABILITI
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2.Buffer Overflow Buffer overflow t
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xdream@Laptop:/$ readelf -a /bin/ls
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A few assembler notions Let us see
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Let us study the representation of
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The program segfaulted when trying
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We can determine that at address 0x
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The we can look in libc6 for the ad
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We can also see in the sources a ca
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3. String Format Presentation Strin
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Page 157 and 158: Using dtors. bash# objdump -s -j .d
Page 159 and 160: Security The only solution here is
Page 161 and 162: This program is “suidroot”, whi
Page 163 and 164: } } printf("Opening of file authori
Page 165 and 166: } flock(fd, LOCK_UN); //Closing of
Page 167 and 168: 1.Authentication Brute force In thi
Page 169 and 170: Hybrid attack T launch a hybrid att
Page 171 and 172: LC3 offers 4 methods. 1. From the l
Page 173 and 174: B) The Unix passwd file On Unix sys
Page 175 and 176: C) Authentication service One of th
Page 177 and 178: The first thing to do is to create
Page 179 and 180: B) Backdoor kernel Backdoor kernels
Page 181 and 182: CHAPTER VII GENERIC SECURITY PROCED
Page 183 and 184: Configure snort so that it can stor
Page 185 and 186: Pmon NT Pmon is a process monitorin
Page 187 and 188: Here is a simple scenario. Let us t
Page 189 and 190: Step 2 : Encoding and signing (PGP)
Page 191 and 192: 12.You can choose a separate Signat
Page 193 and 194: B) Cryptography of hard drives Wind
Page 195 and 196: The first time this operation is do
Page 197 and 198: Integrity controller on Linux There
Page 199 and 200: There are three protection levels:
Page 201 and 202: "Program control" Section The “pr
Page 203 and 204: The rules take the following values
Page 205: 7.VPN What is a Virtual Private Net
Page 209: Created by trainers from The Hackad
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