hackers beware the ultimate guide to network security phần 3 pptx

... 288751 231 1:288751 231 1(0) win 8192 <mss 1460,nop,nop,sackOK> (DF) 04:54:52.0014 73 eth0 P 10.246.68.48.telnet > 10.246.68.46 .34 31: S 33 9459049 :33 9459049(0) ack 288751 231 2 win 32 120 ... > 10.246.68.46 .34 30: S 33 8617656 :33 8617656(0) ack 2887507110 win 32 120 <mss 1460,nop,nop,sackOK> (DF) 4 th connection 04:54:52.00 139 1 eth0 P 10.246.68...

Ngày tải lên: 14/08/2014, 18:20

... used to allow the attacker to plant the malevolent Trojan code into the system. For example, in the specific case contained in this document, the vulnerability allows the attacker to replace the ... it in the left panel and clicking the Map Drive button at the bottom of the screen. Figure 12.11. Results from running a scan with Legion. Legion then automatica...

Ngày tải lên: 14/08/2014, 18:20

... be used to determine whether hosts are on the same network or not. Companies that are connected to the Internet have an external router that connects their networks to their ISPs or the Internet. ... to a company has to go through the external router. Otherwise, there would be no way to get traffic into the network. (This is assuming that the company does not hav...

Ngày tải lên: 14/08/2014, 18:20

... reconnected to the network. The only way to avoid the ramifications of the bubonic Denial of Service was to physically disconnect it from the network or find a way to stop the network attack. The ... cases, the user either had to open the attachment to launch the attack or have Auto Preview turned on. Some of these exploits were launched when the emai...

Ngày tải lên: 14/08/2014, 18:20

... first combines the password with the salt and then computes the hash. The system not only stores the hash, but also the salt with the user ID. Now, when a user authenticates to the system and ... five times to overcome the restriction, finally changing them back to the old passwords. In other words, users figured out how to bypass the security restrictions....

Ngày tải lên: 14/08/2014, 18:20

... want to save the Registry data to or the file you want to restore from. Figure 11.7. Dialog box used to save the Registry. The following is the output from saving the Control Panel/Custom ... attackers to use. Many administrators are afraid or get upset when they run across these tools, only seeing the negative aspect. The positive side of using these tools is t...

Ngày tải lên: 14/08/2014, 18:20

... 2. The attacker connects to the portmapper and requests information regarding the sadmind service using the UNIX rpcinfo command. 3. The portmapper returns information to the attacker about the ... this to happen, the external user could either wait for an internal user to login or cause an event to happen on the external computer, which would cause the int...

Ngày tải lên: 14/08/2014, 18:20

... “ Hackers Beware “ New Riders Publishing 650 Jul 30 04:02:01 seclinux1 syslogd 1 .3- 3: restart. Jul 30 04:02:01 seclinux1 syslogd 1 .3- 3: restart. Jul 30 04:02:01 seclinux1 syslogd 1 .3- 3: restart. ... attacker breaks into your system, he would not be able to change the logs because they are stored on a different system. He would have to break into a separate system t...

Ngày tải lên: 14/08/2014, 18:20

... upgrades to correct all known IIS security flaws when they install patches or upgrades to fix the RDS flaw. How to Protect Against It An outstanding guide to the RDS weakness and how to correct ... information across the network and Internet, the protocol used does not provide an indication of an exploit occurring. The issue to watch for is whether the patt...

Ngày tải lên: 14/08/2014, 18:20