ASA outside interface

Similar Questions

• How to block ping the ASA 5506 outside interface?

  I configured a Cisco ASA VPN configuration and Setup. Everything works fine. The SAA outside interface is to pings (on the internet) which is a threat to security. How to only block ping to the external interface without interrupting the functions of the ASA. I tried what follows, but does not seem to work.

  outside the IP = 169.215.243.X

  ASA 2.0000 Version 2

  Access list BLOCK_PING refuse icmp any host 169.251.243.X echo-reply

  Access-group BLOCK_PING in interface outside

  You have set up the ACL is only for traffic that gets sent through the ASA, ASA traffic is controlled in different ways. For ICMP, you can refuse the rattling of the SAA and that allows all other ICMP with the following configuration:

  icmp deny any echo outsideicmp permit any outside

  It is also possible to ban all ICMP:

  icmp deny any outside

  The 'truth' is probably somewhere between these two options. It's your choice.

• Can the interface of management firepower & ASA-Inside interface be on separate subnet?

  HI -.

  Need a few more details, please.

  I have a requirment needed to put the power of fire management interface and the interface of the ASA-Inside on different subnets, supports?

  From what I've read so far, most of the document suggests to put two interfaces on the same subnet, is there a reason to do so?

  I may be wrong but I think that fire use management interface to communicate with FireSight for control and comamnd traffic, data traffic real plan always flows from ASA-outside to inside and vice versa, both there are connectivity ip between FireSight and firepower, it should be ok, right? or am I totally wrong, that they must be on the same subnet?

  ASA5515-x with the firepower 5.3.1

  Thanks in advance for your help.

  Separate subnets are fine.

  As you have seen correctly - the module of firepower has need to contact FireSIGHT Management Center (IP-wise).

  This path is completely independent of the plan through the ASA data path. The ASA redirects the traffic via the service strategy for the module of firepower entirely internally to the unit.

• VPN hairpin on the OUTSIDE interface

  Hairping VPN on the OUTSIDE interface

  What I currently have is SSL Anyconnect VPN connections to the ASA that works very well.

  I want all networks through the ASA-tunnel.

  All web connections will be donated to the ASA and hennard back to the interface from the OUTSIDE to get web access.

  I have a static route on the ASA for setting up VPN

  Route outside 0.0.0.0 0.0.0.0 PUBLIC_IP>

  NAT exemption is in place for the creation of VPN

  NAT (INSIDE, OUTSIDE) static source any destination of all public static VPN_POOL_OG VPN_POOL_OG

  What I need is the configuration to create the VPN PIN for internet traffic.

  Any help is greatly appeciated.

  

  Hi Thomas,

  You need the following:

  1)

  permit same-security-traffic intra-interface

  2)

  Pool = 192.168.3.0/24 VPN

  object obj-vpnpool network

  subnet 192.168.3.0 255.255.255.0

  dynamic NAT interface (outdoors, outdoor)

  !

  Please let me know

  The rate of any position that you be useful.

• The AIP - SSM to unused ASA connection interface

  Hi people,

  Perhaps, someone has already raised this issue, but I was unable to find anything relevant. We have an ASA with an unused interface (gig0/3). The sensor of the AIP - SSM is physically connected to this interface with the following IP settings:

  Sensor (192.168.2.2/30,192.168.2.1)---interface ASA (192.168.2.1/30)

  It's basically point to point connectivity, and I can reach the ASA of the sensor and the other way around.

  This design is dictated by the lack of a free port on the switch.

  Technically, it should work without any problems, but I can't seem to be able to reach the sensor. There is a switch between my PC and the sensor and the switch has the corresponding static route added. I can reach the switch sensor.

  Is there a security feature hidden I don't know that prevent communication with the sensor.

  And ACL of the sensor allows the traffic to all networks (0.0.0.0/0)

  With the sensor acl set to 0.0.0.0/0, the sensor must be allowing connectivity.

  You can use the 'View of package' command on the sensor to look at packets on the interface command and control to see if the packets are what makes the sensor.

  You say that you have a static route on your switch for the switch reach your sensor. Do you know if your PC is configured to use the switch as the computer's default router. If the PC is to use a different default router, then the other router should also the static route.

  The other possibility is that the SAA itself can be deny traffic.

  Since this is an ASA connected to the MSS interface, the traffic must be routed through the ASA. Standard firewall rules apply to this traffic. The security level of the interfaces can prevent traffic, and an ACL may be necessary in order to allow the circulation of your PC be routed to the SSM.

  NOTE: If you don't want to have to worry about roads, the other alternative is to make the network between the ASA and SSM to be an isolated network that only 2 machines know.

  You can then use PAT static to map a port on the inside of the ASA interface with the address of the SSM 443 https port and map a second port of the SAA within the interfaces to the address of the SSM SSH port.

  How your home PC would simply plug the ASA IP using these specific ports and the ASA would do the translation of port and transmit on the MSS.

  The SSM address could also be dynamically PAT would have on the SAA within the address, so SSM could start the connection to other machines on the inside network.

  Another alternative if you have addresses available on your inside network IP is to use static NAT instead of PAT. And just go forward and has the ASA statically map an IP network on IP of the SSM on the network that only the ASA and the SSM inside could know.

  In both cases the network between the ASA and SSM would not routable at, and you wouldn't have to worry of reproducing static routes anywhere.

  SIDE NOTE: A separate network for the SSM you Becase you will also need to NAT or PAT address of the SSM for the ASA to outside interface. In this way the SSM will be able to connect to Internet to download cisco.com auto updates, and/or pull overall correlation of servers cisco information. It's probably the same configuration that you would already other internal addresses, and just to be sure, you cover the SSM since you have it on a separate subnet.

• ASA - question Interface (IPSec)

  Is it possible on an ASA to "split" the interfaces (e0/0-e0/1 * e0/2-e0/3) to behave in ways that work as distinct from the ASA?

  Goal (2 separate functions)

  --------------------------------

  Function 1

  E0/0 - outside Interface - ISP

  E0/1 - inside Interface - traditional LAN

  2 function

  E0/2 - Interface Outside2 - to be used for an IPSec tunnel through another external network (BGP cloud)

  restricted E0/3 - Inside2 - LAN

  *****************************************

  -e0/2 e0/3 do not cross e0/0 or e0/1 (or vice versa).

  -e0/2 is only used to connect to a remote site, so that the network of remote sites and e0/3 network communicate with each other.

  *****************************************

  I'm not sure it will work, as the route default statement e0/0 quad kill my traffic lanes of the tunnel between the remote and e0/3 site.

  Thoughts or comments?

  Yes, you should be fine. The command I posted above shows that packets are getting encrypted / decrypted. The ASA increments hit ACL of the charges for traffic encrypted/decrypted.

• Telnet/SSH to PIX outside interface

  Hi all

  Is it possible to allow a telnet or ssh connection to a PIX via the external interface? The documentation I have (seems) declare that telnet access via the external interface 'requires' IPSEC - it is not clear if this is a recommendation or a requirement.

  In addition, the documentation indicates that no traffic will be through a PIX if the inside and the outside interface are configured with the same security level - does that mean that no traffic will pass "full stop." or the traffic will pass if the appropriate ACL/ducts are configured?

  Advances in thanks

  You cannot telnet to the external interface, but you can SSH to it:

  http://www.ciscotaccc.com/security/showcase?case=K75783563

  Traffic will be able to pass on the same level of security if you are running a current version (> = 7.0) of the PIX and configure the feature of "permit same-security-traffic inter-interface":

  http://www.Cisco.com/en/us/products/sw/secursw/ps2120/products_configuration_guide_chapter09186a0080450b7c.html#wp1039276

• ASA - 8.2 outside interface with dhcp

  on the external interface, I can't perform the ip address dhcp setroute command.

  I get the error: IP address and subnet mask are not valid pair of broadcast or network address

  The commands are there when I do the? command.  Just not to accept the order with or without dhcp.

  I'm currently testing a 5510 ASA as a failover from 4 G to our ASA 5520.  It's solution of Verizon, but they did not provide IPs, they use the 4G modem passthrough, so I'll try to configure dhcp.  He worked a few days ago.  Not sure what a lack of Im.  The IP address, I had the last time Verizon was 192.168.0.199.

  Large

  Please note all useful messages and mark this message as a response.

  Good day.

• ASA status interface failover: Normal (pending)

  I've been struggling with this, I have two ASA running 8.6 that show the interfaces being monitored as well.

  I'm under 9.2 on these and tell waiting interfaces. Also can I disable SPI monitored? I ask only the cause at the time where the IPS is a module of the SAA, if I had to restart, the units would be tipping. I don't know if it's the same now with the IPS is a software based inside the ASA running on a separate hard drive.

  ASA5515-01 # show failover
  Failover on
  Unit of primary failover
  Failover LAN interface: FAILOVER of GigabitEthernet0/5 (top)
  Frequency of survey unit 1 seconds, 15 seconds holding time
  Survey frequency interface 5 seconds, 25 seconds hold time
  1 political interface
  Watched 3 114 maximum Interfaces
  MAC address move Notification not defined interval
  Version: Our 9.2 (2) 4, Mate 4 9.2 (2)
  Last failover at: 03:55:44 CDT October 21, 2014
  This host: primary: enabled
  Activity time: 507514 (s)
  slot 0: ASA5515 rev hw/sw (1.0/9.2(2)4 State) (upward (Sys)
                    Interface to the outside (4.35.7.90): Normal (pending)
                    Interface inside (172.20.16.30): Normal (pending)
  Interface Mgmt (172.20.17.10): Normal (pending)
  Slot 1: IPS5515 rev hw/sw (N/A 7.1 (4) E4) State (to the top/to the top)
  IPS, 7.1 (4) E4, upward
  Another host: secondary - ready Standby
  Activity time: 0 (s)
  slot 0: ASA5515 rev hw/sw (1.0/9.2(2)4 State) (upward (Sys)
                    Interface (0.0.0.0) outdoors: Normal (pending)
  Interface (0.0.0.0) inside: Normal (pending)
  Interface (0.0.0.0) Mgmt: Normal (pending)
  Slot 1: IPS5515 rev hw/sw (N/A 7.1 (4) E4) State (to the top/to the top)
  IPS, 7.1 (4) E4, upward

  Failover stateful logical Update Statistics
  Relationship: unconfigured.

  ASA5515-01 # poster run | failover Inc.
  failover
  primary failover lan unit
  LAN failover FAILOVER GigabitEthernet0/5 interface
  failover interface ip FAILOVER 10.10.1.1 255.255.255.252 ensures 10.10.1.2
  ASA5515-01 # ping 10.10.1.2
  Type to abort escape sequence.
  Send 5, echoes ICMP 100 bytes to 10.10.1.2, time-out is 2 seconds:
  !!!!!
  Success rate is 100 percent (5/5), round-trip min/avg/max = ms 02/01/10
  # ASA5515-01

  ------------

  I read also not to use a design where a cable is directly connected to each unit, and instead each interface must connect on a downstream switch port so that the status of the link is still up to a firewall interface if the other firewall interface fails. Otherwise, the two units detects a link down condition and assume that their own interface is down. Never really thought about it in that sense. Anyone use a direct attached cable and have problems?

  Hello

  I rarely troubleshoot failover configurations so I am little rusty with associated with these problems.

  First thing that comes to mind is that configurations under interfaces has "standby" configured IP address? I wondered as the changeover seems to be configured and the link between the units is fine but the unit ready standby shows just 0.0.0.0 for each interface.

  -Jouni

• Levels of security ASA Firewall interface and access lists

  Hello

  I am trying to understand the correlation between the ACL and the levels of security on an ASA of the interface.

  I work with an ASA using both! ??

  Is this possible?

  Assumptions: Any ACL applied below is on the wire of transmission (interface) only in the inbound direction.

  Scenario 1

  interface level high security to security level low interface.

  No ACLs = passes as I hope

  What happens if there is an ACL refusing a test package in the above scenario?

  Scenario 2

  Low security to high

  No traffic = ACL will not pass as I hope

  What happens if there is an ACL that allows the trial above package.

  I have trawled through documentation on the web site and cannot find examples, including the two (using ACL in conjunction with security levels).

  Thank you in advance for any help offered.

  Levels of security on the interfaces on the SAA are to define how much you agree with the traffic from this interface.  Level 100 is the most reliable and 0 is least reliable.  Some people will use a DMZ 50 because trust you him so of internet traffic, but less traffic then internal.

  That's how I look at the levels of security:

  A security level of 1 to 99 always two implicit ACL.  To allow traffic down interfaces of security and the right to refuse traffic toward higher level security interfaces.  100 has a security level IP implicitly allowed a full and level 0 has implicit deny ip any one.

  In scenario 1, if you apply an ACL to deny a security level of 1-99, it will eliminate implicit permit than an entire intellectual property and deny traffic based on the ACL and all traffic.  You create an ACL to allow some other desired traffic.  If this ACL is applied to a security level of 100, he'll refuse essentially all traffic because it will remove the authorization implicit ip any any ACL.  Once again, you will need to create an another ACL to allow traffic.

  In scenario 2, if you apply a permit ACL to an interface of level 0 of security, it will allow that traffic, but continue to deny all other traffic.  However, if the security level is 1-100, it will be all traffic to that destination and remove the implicit ACL (permit and deny)

• tunnel upward but not ping of the asa inside interface

  Dear all

  I am establishing a tunnel vpn between cisco asa 5510 and a cisco router. The tunnel is up, and I can ping both cryptographic interfaces. Also, from the console of the asa I can ping to the router lan interface but the router I can not ping the lan interface of the asa, this message appears in the log

  % ASA-3-713042: unable to find political initiator IKE: Intf liaison_BLR, Src: 128.2

  23.125.232, DST: 129.223.123.234

  Here is the config of the equipment.

  I was able to successfully establish an ipsec with an another ROUTER 1841 tunnel. I have 1 hub site and 3 remotes sites with asa as a hub.

  Help, please.

  Your crypto that ACLs are not matching. They must be exact mirror of the other.

  In addition, you can consider setting the levels of security for the interfaces. They are all at 0. The value internal/private those a higher value.

  Let me know how it goes.

  PS. If you find this article useful, please note it.

• ASA management interface

  After reading the management description of the command. It seems that only management traffic to the ASA is allowed on this interface (ASDM, Telent, SSH). It cannot be used for NTP, SNMP, or logging. Is that correct. Thank you

  the documents given the management interface only will accept only incoming traffic. SNMP, as will be the outgoing traffic, NTP will not work... you can convert the dedicated management0/0 port in a port routed by way of licensing for asa5510 and higher.

  The low port out-of-band management of the table reference.

  http://www.Cisco.com/en/us/products/ps6120/prod_models_comparison.html

  the rate of all useful messages.

  Rgds

  Jorge

• VPN via a different interface of the "outside" interface

  I have two ASA5510 each with two external interfaces, we're connecting to an ISP for the Internet and the other connects to an MPLS network. And I have the LAN on the interface of "inside".

  In my lab, I have each external interface connected to a separate router, and the router connects to an another ASA5510 who will be at the other end of the VPN.

  Enough of this scheme:

  LAN
  |
  |
  |
  |
  ASA--------------
  | defaultroute | specificroute
  |                       |
  |                       |
  |                       |
  Router router
  |                       |
  |                       |
  |                       |
  | defaultroute | specificroute
  ASA--------------
  |
  |
  |
  |
  LAN

  I bring a VPN on the interface either as long as I get the interface default route (0.0.0.0 0.0.0.0). So it seems that the configuration is correct. But given that I have only one default route, I can never raise the second VPN.

  I have a static route pointing to the peer through the correct interface and next hop for the second VPN IP and can ping and traceroute to the public address just fine so routing is correct, but...

  whenever I ping from LAN to LAN to make appear the second VPN log just shows it as an attempt to create a translation.

  It is as if it does not have it as "interesting traffic" but as a regular traffic to the Internet.

  Any thoughts on this?

  Thanks in advance.

  Hello

  If you need to configure the tunnel interface on the ASA (ISP or MPLS)... While you apply the card encryption on both interfaces.

  Then... routing will take care through which interface to negotiate the tunnel.

  Say that the remote site has this configuration:

  Public IP = 1.1.1.1

  Remote LAN = 10.1.1.0/24

  You should have this:

  Route ISP 1.1.1.1 255.255.255.255 NEXT_HOP 10

  Route MPLS 1.1.1.1 NEXT_HOP 20 255.255.255.255

  Route ISP 10.1.1.0 255.255.255.0 NEXT_HOP 10

  Route MPLS 10.1.1.0 255.255.255.0 NEXT_HOP 20

  In addition, configure IP SLA.

  Whenever the ISP interface goes down, the ASA will attempt to negotiate the tunnel via the MPLS interface (because is one that can be used to reach the other site).

  Federico.

• Several public address on a Pix outside interface spaces

  I currently have a pix (6.3) with the external interface configured as part of a public ip address space of 27 bits. We are running out of addresses and need to buy another beach. Can I make this work using the pix existing and without alteration of the existing range in use? Basically, can I get a new address to my existing pix space and configure static for this space, even if the interface is assigned an ip address on another beach?

  YES, you can do quite easily.

  Example: your external interface is

  129.174.1.1/27. Now, you want to add another

  141.141.141.0/24 to your external interface.

  Is this correct?

  The technique is to use the Routing IP NAT Pool.

  In this example, you add a static route

  on the router upstream like this:

  IP route 141.141.141.0 255.255.255.0 129.174.1.1

  Now you can make static on the pix as NAT

  this:

  static (i, o) 141.141.141.0 192.168.1.0 netmask 255.255.255.0

  Easy right?

• How can I enable webvpn on the SAA outside interface

  Hi Forum,

  How can I remove the administrative session of the ASDM on the external interface, so that I can activate the webvpn?

  Thank you

  Paul

  ASDM is activated by the server http command allow so if you must disable this command use do not allow any http server

  Visit this link for more details

  http://www.Cisco.com/en/us/products/ps6120/products_configuration_guide_chapter09186a008054d863.html#wp1047288

  M.

  Hope that helps, rate, if