HP 4100GL Instrukcja Użytkownika Strona 201
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Oceniono. / 5. Na podstawie oceny klientów
Configuring and Monitoring Port Security
Reading Intrusion Alerts and Resetting Alert Flags
(The intrusion log holds up to 20 intrusion records and deletes an
intrusion record only when the log becomes full and a new intrusion
is subsequently detected.)
Note also that the “prior to” text in the record for the earliest intrusion
means that a switch reset occurred at the indicated time and that the
intrusion occurred prior to the reset.
3. To acknowledge the most recent intrusion entry on port A3 and enable
the switch to enter a subsequently detected intrusion on this port, type
[R] (for Reset alert flags). (Note that if there are unacknowledged intrusions
on two or more ports, this step resets the alert flags for all such ports.)
If you then re-display the port status screen, you will see that the Intrusion
Alert entry for port A3 has changed to “
No”. That is, your evidence that the
Intrusion Alert flag has been acknowledged (reset) is that the Intrusion Alert
column in the port status display no longer shows “
Yes” for the port on which
the intrusion occurred (port A3 in this example). (Because the Intrusion Log
provides a history of the last 20 intrusions detected by the switch, resetting
the alert flags does not change its content. Thus, displaying the Intrusion Log
again will result in the same display as in figure
7-11, above.)
CLI: Checking for Intrusions, Listing Intrusion Alerts,
and Resetting Alert Flags
The following commands display port status, including whether there are
intrusion alerts for any port(s), list the last 20 intrusions, and either reset the
alert flag on all ports or for a specific port for which an intrusion was detected.
(The record of the intrusion remains in the log. For more information, refer
to
“Operating Notes for Port Security” on page 7-22.)
Syntax: show interfaces brief
List intrusion alert status (and other port status informa-
tion)’.
show port-security intrusion-log
List intrusion log content.
clear intrusion-flags
Clear intrusion flags on all ports.
port-security [ e ] < port-number > clear-intrusion-flag
Clear the intrusion flag on one or more specific ports.
In the following example, executing show interfaces brief lists the switch’s port
status, which indicates an intrusion alert on port A1.
7-19
- HP Procurve Series 4100GL 3
- Switches 3
- 2 TACACS+ Authentication 6
- Getting Started 13
- Introduction 14
- Command Syntax Conventions 16
- Simulating Display Output 16
- Related Publications 17
- Sources for More Information 20
- Need Only a Quick Start? 21
- Menu: Setting Passwords 26
- TACACS+ Authentication 29
- Software 31
- Release G.05. xx 31
- Terminology Used in TACACS 32
- Applications: 32
- General System Requirements 33
- Privilege Levels 35
- Before You Begin 37
- Configuration 38
- Caution Regarding 41
- Login Primary 41
- Note on 44
- Encryption Keys 44
- First-Choice TACACS+ Server 46
- How Authentication Operates 48
- Local Authentication Process 50
- Using the Encryption Key 51
- Access When Using TACACS+ 52
- Authentication 52
- Messages Related to TACACS+ 53
- Preparation: 59
- Want RADIUS To Protect 62
- The switch now 63
- SSH authentication 63
- Access When Using RADIUS 69
- IP address: 10.33.18.151 73
- Stop-Only: 75
- Start-Stop: 75
- Viewing RADIUS Statistics 77
- RADIUS Accounting Statistics 80
- Prerequisite for Using SSH 88
- Public Key Formats 89
- Host Public 96
- Key for the 96
- Bit size 97
- Exponent <e> 97
- Modulus <n> 97
- Client Contact Behavior 99
- Execute no ip ssh 100
- Public-Key Authentication 106
- Bit Size Exponent 107
- <e> 107
- Modulus 107
- <n> 107
- Comment 107
- Key Index 109
- Contents 113
- Overview 114
- Terminology 115
- Prerequisite for Using SSL 116
- Operation 119
- Password 120
- Security Tab 120
- Show host certificate 124
- Current SSL 127
- Host Certificate 127
- Browser Contact Behavior 129
- Enable SLL 132
- Common Errors in SSL setup 133
- (802.1x) 135
- Overview 136
- How 802.1x Operates 139
- as defined in the 142
- 802.1x standard 142
- Access Control (802.1x) 145
- Authenticators 148
- 802.1x Open VLAN Mode 154
- 802.1x Open VLAN Mode 155
- Unauthorized-Client VLANs 158
- 802.1x Devices 165
- Blocking a Non 166
- 802.1x Device 166
- Other Switches 167
- Statistics, and Counters 171
- The switch reboots 176
- After the 802.1x session 180
- Basic Operation 184
- • PC1 can access Switch A 186
- Planning Port Security 187
- Configuring Port Security 192
- Security Features 197
- Alert Flags 197
- Resetting Alert Flags 199
- Yes” for the port on which 201
- Options 209
- Access Levels 209
- Stations 210
- Managers 211
- Building IP Masks 215
- IP Entry 216
- Operating Notes 218
- Using Authorized IP Managers 219
- Index – 1 221
- 2 – Index 222
- Index – 3 223
- 4 – Index 224
- Index – 5 225
- 6 – Index 226
- 5990-3032 228
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