cisco asa nat

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Cisco ASA basic Theory with configuration

Cisco's ASA Firewall is a stateful firewall that maintains a connection table (conn) about user information, by default the ASA provides stateful connections to TCP and UDP traffic, and is non-stateful to the ICMP protocol.The message traversal process for Cisco ASA is as follows:A new TCP message view to establish the

Cisco asa dns memory depletion Vulnerability (CVE-2015-0676)

Cisco asa dns memory depletion Vulnerability (CVE-2015-0676)Cisco asa dns memory depletion Vulnerability (CVE-2015-0676) Release date:Updated on:Affected Systems: Cisco ASA 1, 5500 Description: CVE (CAN) ID: CVE-2015-0676The

Cisco asa vpn xml Parser Denial of Service Vulnerability (CVE-2015-0677)

Cisco asa vpn xml Parser Denial of Service Vulnerability (CVE-2015-0677)Cisco asa vpn xml Parser Denial of Service Vulnerability (CVE-2015-0677) Release date:Updated on:Affected Systems: Cisco ASA 1, 5500 Description: CVE (C

NAT Configuration for Asa/pix firewall

1. Configure NAT translation for a public network address poolNat (inside) 1 10.0.0.0 255.255.255.0Global (Outside) 1 222.172.200.20-222.172.200.30//This command may not work? And the TAB key is not complete, but no tube, according to lose can.OrGlobal (outside) 1 222.172.200.202, the public network only 1 fixed IP NAT conversionNat (inside) 1 10.0.0.0 255.255.255.0Global (Outside) 1 222.172.200.68//Designa

Cisco ASA 8.4 (5) Service port forwarding configuration and tin melt letter, USG configuration diagram

process Object Network 50.30_4172 NAT (inside,outside) static 202.202.202.202 service UDP 4172 4172 object n Etwork 50.30_8443 Nat (inside,outside) static 202.202.202.202 service TCP 8443 8443 object Network 50.30_443 Nat (Inside,outside) static 202.202.202.202 service TCP HTTPS 8888 Object Network 50.30_22 NAT

Cisco Firewall ASA configuration case

TopologyRequirement: You can use the Cisco Firewall ASA to access servers in the Internet and DMZ through the Intranet. servers in DMZ can be published to the network for access by Internet users.I. Use of Cisco simulated FirewallBecause we do not have real devices, we use a virtual system using the Linux kernel to simulate Cisco's firewall. The simulated firewal

Cisco ASA firewall VPN configuration

Step 1 of Cisco ASA firewall VPN configuration: Create an address pool. To remotely access the client, you need to assign an IP address during logon. Therefore, we also need to create a DHCP address pool for these clients. However, if you have a DHCP server, you can also use a DHCP server. QUANMA-T (config) # ip local pool vpnpool 192.168.10.100-192.168.10.199 mask 255.255.255.0 Step 2: Create IKE Phase 1.

Cisco Adaptive Security Appliances (ASA) 5500 CRLF Injection Vulnerability

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, a

Cisco asa l2tp over ipsec configuration details

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 suppor

Cisco ASA Firewall Active/standby failover

In this article, I'll briefly explain the Active/standby failover configuration on the Cisco ASA. The lab is do in GNS3. Physical topology: ConfigurationCiscoasa/act/pri (config) # sh run failoverFailoverFailover LAN Unit PrimaryFailover LAN Interface failover_stateless GIGABITETHERNET0/2Failover link failover_stateful gigabitethernet0/1Failover interface IP failover_stateless 169.254.0.15 255.255.255

Understand Cisco NAT

Understand Cisco NATA lot of things have happened to configure a NAT.1. Inside and OutsideMany people who have configured NAT in Cisco have a question, that is, the difference between inside and outside! The following describes the NAT execution sequence in the

20-Cisco Firewall: Network static NAT: Networking still NAT

convert inside network 10.1.1.0/28 to the DMZ zone 10.1.2.0/28ASA (config) # object Network IN-DMZASA (config-network-object) # subnet 10.1.2.0 255.255.255.240ASA (config) # object Network In-yuanASA (config-network-object) # subnet 10.1.1.0 255.255.255.240ASA (Config-network-object) # nat (INSIDE,DMZ) static IN-DMZVerify:R2#telnet 10.1.2.3Trying 10.1.2.3 ... OpenUser Access VerificationUsername:ccPassword:R3>asa

Cisco ASA iOS Upgrade or recovery

Cisco ASA iOS upgrade or RestoreFirst, pre-upgrade preparation work1 , prepare the iOS file you want to upgrade and the corresponding ASDM file2 , set up TFTP on a computer, configure the directory, and connect to the firewall (assuming the computer IP is 192.168.1.2)Second, upgrade steps1 , Telnet on the ASAasa>en// Enter privileged modeAsa#conft// Enter configuration mode2 , viewing files on the

Cisco Adaptive Security Appliance (ASA) IDFW Security Vulnerability

Release date:Updated on: Affected Systems:Cisco ASA Description:--------------------------------------------------------------------------------CVE (CAN) ID: CVE-2014-0653, CVE-2014-0655 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. A Security

Cisco ASA iOS Upgrade or recovery

Cisco ASA iOS Upgrade or RestoreFirst, pre-upgrade preparation work1. Prepare the iOS files to be upgraded and the corresponding ASDM files2. Set up TFTP on a computer, setup the directory, and connect with the firewall (assuming the computer IP is 192.168.1.2)Second, upgrade steps1 , Telnet on the ASAasa>en//Enter privileged modeAsa#conft//Enter configuration mode2 , viewing files on the

Cisco Firewall ASA Configuration case

Cisco Firewall ASA Configuration case Topology map Requirements: Through Cisco Firewall ASA use intranet users can access the external network and the server in the DMZ, the server in the DMZ can be published to the network, for the extranet user access A The use of Cisco

Cisco ASA Firewall Deployment case

Enable No-floodDisplays the ARP detection status for each interface:Ciscoasa (config) # show arp-inspectionInterface Arp-inspection Miss----------------------------------------------------Inside enabled FloodOutside enabled No-floodConfigure interface access lists (no detection, bidirectional discharge bpdus, and IPX traffic):Ciscoasa (config) # access-list access1 EtherType Permit BPDUsCiscoasa (config) # access-list Access1 EtherType Permit IPXCiscoasa (config) # Access-group Access1 in inter

Deploying a log server on Cisco ASA

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Cisco configuration instance _ Cisco dual-Egress NAT configuration

Cisco configuration instance _ Cisco dual-Egress NAT configuration objective: to simulate the routing function based on the original address policy when a dual-Egress link is available, and access to the external network from different original addresses is realized, in most cases, the vro uses NAT to translate the Int

Cisco ASA 5505 Password reset

Company A Cisco asa5505 collapsed, fortunately there is a standby machine, but before the other people have used, do not know the login password, so take out the console line access to the standby 5505, re-power, press ESC at startup, then the prompt Rommon #0 >The value of the configuration register is 0x41 Rommon #0 >confreg 0x41Enter reboot, restart the device Rommon #1 >rebootThe process of entering a password is skipped after restarting the devic

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