the flash format650) this.width=650; "Src=" Http://s2.51cto.com/wyfs02/M00/82/28/wKioL1dNLxuiOdu-AAAQJCGgzwc938.png-wh_500x0-wm_3 -wmp_4-s_2149940309.png "title=" 4.png "alt=" Wkiol1dnlxuiodu-aaaqjcggzwc938.png-wh_50 "/>To ensure that no errors occur when using the command WR, copy run start, after restarting the ASA, in the global configuration mode650) this.width=650; "Src=" Http://s1.51cto.com/wyfs02/M01/82/28/wKioL1dNL5fjluXRAAAppw3MQ2o580.png-wh
//Disable Logging 503001logginghostdmz 192.168.12.1//specifies the interface log server (SYSLogserver) IP Address Troubleshooting tool Packet TracerThe Packet tracer simulates a packet traversing the data channel of the ASA and tracks the entire processing of the packet by the ASAASA1 (config) #packet-tracerinputdmzicmp192.168.12.10080 192.168.12.139phase:1 //View Route Type:route-lookupsubtype:resolveegressinterfaceresult: allowconfig:additionalinfo
The IPSec VPN realizes the network expansion, the firewall realizes the control and the filtering to the network traffic, therefore has the influence to the IPSec VPN communication.
The default ASA maintains a state session only for UDP/TCP traffic, and therefore discards the ESP traffic that is returned. There are two ways to solve the problem
One uses ACLs to release ESP traffic.
Two applications check IPSec VPN.
Experimental topology
R1 conf
Tags: connecting database expected database file Contact Us jewelryI 've picked up a couple of days Sqlanywhere (ASA) database, where two of the databases are reported as "File isshorter than expected-transaction rolled back" error,650) this.width=650; "Src=" Http://s1.51cto.com/wyfs02/M02/84/61/wKiom1ePD7Hyg0xRAABBOiL-9xQ267.png-wh_500x0-wm_3 -wmp_4-s_1269407155.png "style=" Float:none; "title=" Qq20160720133433.png "alt=" Wkiom1epd7hyg0xraabboil-9xq
enable Nat control on the ASAExperimental requirements:1. Configure each routed interface IP,asa Interface2. Configure Dynamic Naton the Asa toenable R1 to telnet R4. 3. Dynamic PATis configured on the Asa, enabling R3 to telnet R4. 4. Configure routing to enable R2 to telnet R45. Configure enable Nat control on the Asa
connection type to remote access.Tunnel-group vpnclient general-attributes//Configuring the authentication method for this channel groupAddress-pool vpnclient//define the address pool usedDefault-group-policy vpnclient//define default Group Policy-----Set up authentication methods and shared keys-------------Tunnel-group vpnclient ipsec-attributes//Configure authentication method for IPSecPre-shared-key *//Pre-shared key for IKE connectionTelnet Timeout 5//telnet timeout settingSSH 0.0.0.0 0.0.
1. Topology map
For audit purposes, the source address of the syslog must be the actual address of the device, and for other reasons, the Syslog server cannot be placed in the intranet.
2. Interface configuration:
R1:
R1 (config) #int f0/0
R1 (config-if) #ip add 10.1.1.18 255.255.255.0
R1 (config-if) #no sh
R2:
R2 (config) #int f0/0
R2 (config-if) #ip add 10.1.1.28 255.255.255.0
R2 (config-if) #no sh
R3:
R3 (config) #int f0/0
R3 (config-if) #ip add 20.1.1.38 255.255.255.0
R3 (c
Release date:Updated on:
Affected Systems:Cisco ASA 5500 Series Adaptive Security Appliance 8.0-8.4Description:--------------------------------------------------------------------------------Cve id: CVE-2011-3285
The Cisco ASA 5500 Series Adaptive Security Device is a modular platform for providing security and VPN services. It provides firewall, IPS, anti-X, and VPN services.
The CRLF Injection vulnerab
■ Ciscoasa # sh cpu usage this command is used to view the current CPU usage of the ASA.
■ Ciscoasa # sh memory
This command is used to view the current memory usage of the ASA.
Sh memory detail and sh memory binsize are used for advanced memory troubleshooting. Generally, do not use them. ■ Ciscoasa # sh blocks this command is used to view the usage of the ASA
When Cisco routers are routed first, when Nat first may be known, inside is routed first, outside is first Nat.Well, for Cisco ASA, it is not the case, most of the first to find the route if the data from inside, in both cases Nat will first route to confirm the interface.
Did the purpose NAT conversion
Static NAT session exists
Once you know this feature, let's look at the following two cases
CISCO
Change the default message level-record user logon
Step 1: Find the user logon event ID:
Hostname (config) # show log | include admin
Dec 03 2009 17: 32: 35: % ASA-6-605005: Login permitted from 192.168.202.51/3507 to inside: 192.168.2.20/ssh for user "admin"
Step 2: locate the log level of the current Message ID 605005
Hostname (config) # show logging message 605005
Syslogs 605005: default-level informational (enabled)
Step 3: change the m
Cisco ASA L2TP over IPSEC configuration details
1. Create a VPN address pool
Ciscoasa (config) # ip local pool vpnpool 192.168.151.11-192.168.151.15 mask 255.255.255.0
2. Configure the Ipsec encryption algorithms 3DES and SHA.
Ciscoasa (config) # crypto ipsec transform-set TRANS_ESP_3DES_SHA esp-3des (esp-sha-hmac)
3. Set the IPSec transmission mode to transport. The default mode is tunnel (L2TP only supports transport)
Ciscoasaconfig) # crypto ipsec
Recently began to learn Cisco's ASA to see the use of ASDM when there are some problems, the first is to report unable to launch device manage xxxx.xxx.xxx.xxx this error 650) this.width=650; "Src= "Http://s1.51cto.com/wyfs02/M01/7E/D3/wKioL1cKAhjDdBUdAAA2FMxQhuA576.png" title= "qq picture 20160410153106.png" alt= " Wkiol1ckahjddbudaaa2fmxqhua576.png "/>.Then Baidu a bit, without this error in the Chinese document is hereby written.1, first of all, in
Cisco's QoS speed limit and h3c a little difference, but overall, h3c of the comparison slag, the unit is not the same, the H3C car unit is KPBS, and the Cisco Police speed limit unit is bits per SECONDS,H3C this skipped. The theory of the token barrel is not verbose.Configure the QoS speed-limiting process on the ASA as follows:Steps:Step 1: Create ACLs to match streamsAccess-list rate_limit_lan-2 Extended Permit ip any object LAN-2Access-list rate_l
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