Corporate Computer and Network SecurityFor Internet and Network Security courses. This up-to-date examination of computer and network security in the corporate setting fills the critical need for security education. Its comprehensive, balanced, and well-organized presentation emphasizes implementing security within corporations using existing commercial software and provides coverage of all major security issues. |
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Page 121
... ( ICMP ) ( Study Figure ) ICMP is for Supervisory Messages at the Internet Layer ICMP and IP ICMP messages are delivered in the data field of an IP packet Types and Codes Type : General category of supervisory message Code : Subcategory ...
... ( ICMP ) ( Study Figure ) ICMP is for Supervisory Messages at the Internet Layer ICMP and IP ICMP messages are delivered in the data field of an IP packet Types and Codes Type : General category of supervisory message Code : Subcategory ...
Page 122
... ICMP Message Types ICMP has a number of message types , each carrying a different type of supervisory communication . Figure 3-31 illustrates some common ICMP message types . In general , there are three major categories of ICMP ...
... ICMP Message Types ICMP has a number of message types , each carrying a different type of supervisory communication . Figure 3-31 illustrates some common ICMP message types . In general , there are three major categories of ICMP ...
Page 123
... ICMP message types does it use ? c ) Why is Ping dangerous ? ICMP Error Advisement Messages Error advisement messages tell a host or router that a problem has occurred in delivery . This does not give rise to the retransmission of ...
... ICMP message types does it use ? c ) Why is Ping dangerous ? ICMP Error Advisement Messages Error advisement messages tell a host or router that a problem has occurred in delivery . This does not give rise to the retransmission of ...
Contents
A Framework 12003 | 1 |
Chapter la Examples of Security Problems | 43 |
Access Control and Site Security | 53 |
Copyright | |
9 other sections not shown
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Common terms and phrases
access control allow antivirus application firewall attack packets auditing authentication backup biometric bits browser Chapter client PC confidentiality connection corporate countermeasure create cryptographic systems data link database decrypt denial-of-service attacks digital certificates digital signature e-commerce e-mail employees fingerprint firewalls firms hackers hacking hashing header HMAC host ICMP IDSs incident ingress filtering install internal Internet IP address spoofing IP packet IPsec Kerberos L2TP large number layer LINUX log files login Microsoft MS-CHAP operating system password patches permissions plaintext policies port number PPTP private key problem programs protection Protocol public key encryption router scanning scripts source IP address specific spoofing SSL/TLS standards static packet filter Study Figure subnet symmetric key encryption SYN/ACK systems administrator TCP/IP Test Your Understanding threats types UNIX vendors versions victim virus viruses VPNs vulnerability testing webserver Windows