Ebook sybex firewalls 24seven, second edition phần 2

Firewalls and Internet Security, Second Edition phần 1 pdf

... III 95 95 98 10 0 10 3 10 4 10 5 10 6 10 7 11 7 11 7 11 9 11 9 12 1 12 1 12 2 12 3 12 6 12 7 12 8 13 2 Safer Tools and Services 13 5 Authentication 13 7 7 .1 Remembering Passwords 13 8 Contents ... Services 10 .5 Something New 19 7 19 8 206 207 209 210 x Contents 11 Firewall Engineering 211 11 .1 Rulesets 11 .2 11 .3 11 .4 11 .5 Proxies ... POP3 and lMAP Samba: An SMB Implementation Taming Named Adding SSL Support with Sslwrap 15 9 16 2 16 5 16 7 16 8 16 8 16 9 17 0 17 0 Firewalls and VPNs 17 3 Kinds of Firewalls...

Firewalls and Internet Security, Second Edition phần 2 ppt

... 111 111 111 20 49 20 49 20 49 20 49 857 859 20 49 49 20 49 20 49 20 49 20 49 1 026 1 026 1 029 1 029 1 027 1030 1031 1031 1031 10 32 1033 1034 1035 1 026 1 029 1 029 1036 1030 1031 773 738 627 22 627 22 628 631 633 ... 391011 tcp 3910 02 tcp 3910 02 tcp 391006 udp 391 029 tcp 100083 tcp 5 423 28147 tcp 391017 l tcp 13 421 7 727 tcp 13 421 7 727 l tcp 100007 udp 100004 udp 100004 tcp 13 421 7 728 tcp tcp 13 421 7 728 l port 111 ... [Costales, 1993] and [Avolio and Vixie, 20 01] And even when a mailer's rewrite rules are relatively easy, it can still be difficult to figure out what to RFC 28 22 [Resnick, 20 01] offers useful...

Firewalls and Internet Security, Second Edition phần 3 ppt

... 1 13 the rand and random functions Could the pseudorandom sequence be predicted and attacking packets identified? Gene Spafford found that it could, if the attacking host did not use a strong random ... contained in a sandbox, a software j a il (six Section 8.5 and Chapter 16) to contain and limit their access to our local host and network These sandboxes vary between browsers and implementors ... are random and spoofed, we have to trace the packets back through the busy Internet backbones to the source host [Savage et al., 2000] This requires the understanding and cooperation of the Internet...

Firewalls and Internet Security, Second Edition phần 4 pptx

... linked to a single binary System AIX4.2 BSD/OS 3.0 FreeBSD 4. 3 FreeBSD 4. 7 FreeBSD 4. 5 HPUX A.09.07 Linux (Mandrake 8.1) Linux (Red Hat 2 .4. 2-2) Linux (Red Hat 2 .4. 7-10) Linux {Red Hat 5.0) Linux ... Intel 4. 0v3.0 NetBSD 1.6 SGI Irix 5.3 SGI Irix 5.3 Sinux 5 .42 c 1002 Sun Solaris 5 .4 Sun Solaris 5.6 Sun Solaris 5.8 Sun Solaris 5.8 Tru 64 4.0r878 6.5.1 Files Comments 242 a staggering number 78 42 ... file world-writable) and forget to close them when they are done The Hacker's Workbench, and Other Munitions 1 24 Table 6.2: The counts reported for the command find / -perm -40 00 -user root -print...

Firewalls and Internet Security, Second Edition phần 5 docx

... misused no TCP RPC and no UDP RPC and no NFS This is hardly a guarantee TCP NFS is corning: exclude it no incoming "r" commands 51 3 51 4 111 2049 2049 UDP UDP no exlernal lpr 51 5 54 0 6000-6100 ... 51 2 Jun 51 2 Nov 51 2 Nov 2048 Nov 204S Jun 51 2 Jan 20 Reason 39 Directory Files bin httpd conf httpd.conf mime.types group pwd.db (various) (various) (various) etc icons logs pages 21 25 25 25 ... allow our secondary nameserver access no other DNS tone transfers permit UDP DNS queries 123 69 UDP UDP * * * * 87 111 ntp time access no access to our tftpd 51 2 * * * * flags 53 53 * port 53 the...

Firewalls and Internet Security, Second Edition phần 6 pdf

... filters for FTP and SMTP access Circuit gateways allowed modified clients to make connections to the Internet without IP connectivity between intranet and Internet were computers and programs that ... to this firewall: the Internet, a DMZ, and the inside network The DMZ contains hosts to offer Web and DNS service to the Internet, and to provide mail and time (NTP) transport across the firewall ... EXT_SMTP1 EXT_SMTP2 EXT_NTP 134 xx.XX.xx 133 XX.XX XX 66 XX.XX.XX 67 XX.XX.XX 67 GUARD XX.XX.XX FIREWALL WEBSERVER LOGGER xx.xx.xx XX.XX.XX XX.XX.XX 131 67 133 protocol definitions // in DMZ 222 Firewall...

Firewalls and Internet Security, Second Edition phần 7 docx

... room, even if he does wipe his shoes He worked for a few more minutes, and gave up until morning 07: 12 07: 14 07: 17 07: 19 07: 23 07: 25 09:41 embezzle.Stanford- EDU Attempt to login with bfrd from embezzle.Stanford.EDU ... comments Jan 20 23: 37: 31 inet ftpd: > QUIT^ M Jan 20 23: 37: 31 inet ftpd: < 221 Goodbye Jan 20 23: 37: 31 inet ftpd: Logout, status Jan 20 23: 37: 11 inet inetd: exit 144 37 Jan 20 23: 37: 41 inet inetd; ... 23: 37: 06 inet ftpd: > pass^M Jan 20 23: 37: 06 inet ftpd: < 500 'PASS': command not understood Jan 20 23: 37: 13 inet ftpd: > pass^M Jan 20 23: 37: 13 inet ftpd: < 500 'PASS': command not...

Firewalls and Internet Security, Second Edition phần 8 docx

... (Authentication Header (AH)) [Kent and Atkinson 1998a]; and a key management protocol (Internet Key Ex-change (IKE)) [Harkim and Carrel, 19 98] , 18. 3.1 ESP and AH ESP and AH rely on the concept of ... competent legal advice 18. 1 The Kerberos Authentication System The Kerberos Authentication System [Bryant, 1 988 ; Kohl and Neuman, 1993; Miller et a/., 1 987 : Steiner et al., I 988 ] was designed at MIT ... his typing speed and errors and the commands he used to check around and attack He probed various computers, while consulting the network whois service for certain brands of hosts and new targets...

Firewalls and Internet Security, Second Edition phần 9 doc

... [Adams and Sasse 199 9] Anne Adams and Angela Sasse Users are not the enemy Communi-cations of the ACM 12(42):40-46, 199 9 Cited on: 140 [Adams and Farrell, 199 9] C Adams and S FameII Internet X.5 09 ... 199 6] R.Callon The twelve networking truths RFC 192 5 Internet Engineering Task Force April 199 6 Cited on: 192 http://www.rfc-editor.org/rfc/rfcl925.txt [Carpenter and Jung, 199 9] B Carpenter and ... [Haber and Stornetta 199 1b] S Haber and W S Stornetta How to time-stamp a digital docu-ment Journal of Cryptology, 3(2) :99 -ll2 199 1 Cited on: 347 [Hafner and Markoff, 199 1] Katie Hafner and John...

Firewalls and Internet Security, Second Edition phần 10 pot

... Denial-of-Service), 107 , 110- 117 attack tools, 131 trinoo, 131 botnets and, 117 can only be mitigated, 107 diagram of, 110 flooding network links with, 108 hard to traceback, 108 mitigation, 111 ... chroot, 161-167 anonymous FTP and, 167 Apache Web server and, 165 application-level filters, 210 building a honeypot with, 295 CGI scripts, 167 chrootuid and, 163 core dumps and, 162 denial-of-sen ice ... 34 exhausting disk space, 109 from chroot environments, 162 ICMP, 108 -109 ,209 IP source address spoofing, 107 remove rpcbind service, 48 syslogd and, 159 Web servers and, 167 downstream liability,...

The Trainer’s Tool Kit Second Edition phần 10 pptx

... supports the program 109 16$ CH11 10- 21-04 08:01:14 PS PAGE 212 Promoting Career Self-Management 213 There is a role for managers to support and reinforce the objectives of the program There ... opportunity to learn from others Do one thing each day that will take them closer to their goal Set goals that are important to them, as much as they may please others Treat failure as an ... well as their individual strengths and weaknesses 109 16$ CH11 10- 21-04 08:01:12 PS PAGE 206 Implementing a Mentoring Program • • • • 207 Provide the mentor and mentee with the tools to...

The Trainer’s Tool Kit Second Edition phần 9 ppt

... on equipping the employee to grow his or her impact in the organization 1 091 6$ CH10 10-21-04 08:01: 09 PS PAGE 194 Making the Most of Development Planning Meetings 195 Making the Most of Development ... attracts you to work there; only a manager inspires loyalty.’’ —kathy conway Author of The Trainer’s Tool Kit M anagers dispense rewards and punishments They have more control over the behavior and ... in the session Use only the right-hand side of the manual for printed information Leave the left-hand side blank for notes Integrate copies of overheads and handouts as they occur during the...

The Trainer’s Tool Kit Second Edition phần 8 pdf

... built into the system The key to the success of any program evaluation is the planning process Evaluators need to become familiar with the nature of the program, the people served, and the goals ... 10916$ $CH8 10-21-04 08: 00: 58 PS PAGE 1 68 Auditing the Training Function 169 developed with stakeholders at the draft reporting stage and then later ﬁnalized for the report Avoid ... achieve the desired results • The time frame for measuring results after training is directly related to the size or extent of the problem or opportunity that the training addressed The greater the...

The Trainer’s Tool Kit Second Edition phần 7 ppsx

... Challenge participants Respect them Listen to them, knowing that they have much to contribute Allow them to influence the process and content of the session Give them the opportunity to learn ... Welcome the trainees officially when they are seated Let them know what to expect Remind them of your agenda, the expected outcome, the amount of time you intend to take, and any break times Tell them ... information will give them the big picture so they can see how they fit Conduct the orientation yourself, but consider giving each new employee a partner from another work area This has the following...

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