FWSM firewall context Access-List entry Limitation

Similar Questions

• PIX Firewall 525 access list problem

  Hello.

  I have the following problem. After insertion of an access list, despite seeing the packages associated with the list, they do not "match", that is, it is as if the list wasn't doing his job.

  Who can be the cause of this behavior?

  PIX 525 model

  IOS 6.3 (4)

  Thank you.

  Marulanda Ramiro Z.

  Are all of syslogs sent properly to the remote host? If so, I would say that the udp connection is never closed by the PIX. Let's say that the connection never hit the timeout in the pix config. If the connection remains open and doesnot increments the hit count for your access list. I have a PIX that makes the same behavior.

  The increase in the number of accesses is also based on the connection and not on each packet passing through the PIX.

  You can use a debug command to see the packets through the PIX.

  HTH

  Mike

• bug in iOS? startup-config + command access-list + an invalid entry detected

  I posted this yesterday in the newsgroup usenet comp.dcom.sys.cisco and received no nibbles. If I did something incredibly stupid, please do not hesitate to advise.

  Cisco 827

  IOS (TM) C820 software (C820-K9OSY6-M), Version 12.2 (8) T5, RELEASE

  SOFTWARE (fc1)

  I'm looking to use a host named in a more extended access list. The

  script I copy startup-config contains the following entries:

  ! the 2 following lines appear at the top of the script

  123.123.123.123 IP name-server 123.123.123.124

  IP domain-lookup

  ! the following line appears at the bottom of the script

  120 allow host passports - 01.mx.aol.com one ip access-list

  When I reboot the router, I saw the following message:

  Translation of "passports - 01.mx.aol.com"... the domain server (255.255.255.255)

  120 allow host passports - 01.mx.aol.com one ip access-list

  ^

  Invalid entry % detected at ' ^' marker.

  It seems as if the entrance to the server name of the router is not processed

  prior to the access list. I can not even check with

  router02 access lists 120 #sh

  makes the access list entry * not * exist.

  But when I manually type the entry in the router I see the

  Next:

  router02 (config) #access - list 120 permits Passport - 01.mx.aol.com ip host

  any

  Translation of "passports - 01.mx.aol.com"... the domain server (123.123.123.123)

  [OK]

  and I can confirm its creation:

  router02 access lists 120 #sh

  Extend the 120 IP access list

  allow the host ip 64.12.137.89 one

  I have to do something incredibly stupid. If necessary I can post the whole startup-config, although it is quite long. (I don't know if the same label/common sense if apply here as apply to newsgroups usenet. i.e. post us actual ip addresses in our configs or must they be edited?)

  Any help is very appreciated.

  Hello

  Currently IOS does not use DNS - names in the ACL for the saved configuration / running.

  When you type in a list of access with a domain name we he looks up and replaces it with the IP address. I remember seeing a bug No. recently request this feature but I don't remember one bug id # now.

  Router (config) #access - list 187 ip allow any host www.cisco.com

  Router (config) #^ Z

  router #show run | 187 Inc

  IP access-list 187 allow any host 198.133.219.25

  router #show worm | split 12

  IOS (TM) C800 Software (C800-K9NOSY6-MW), Version 12.2 (13) T, RELEASE

• Cisco ISE and WLC Access-List Design/scalability

  Hello

  I have a scenario that wireless clients are authenticated by the ISE and different ACL is applied depending on the rules in the ISE. The problem I have seen is due to the limitation on the Cisco WLC that limit only 64 input access list. As the installer has only a few IVR/interfaces and several different access lists are applied to the same base on user groups interface; I was wondering if there may be an evolutionary design / approach according to which the access list entries can evolve next to create a vlan for each group of users and apply the access list on the interface of layer 3 instead? I illustrated the configuration below for reference:

  Group of users 1 - apply ACL 1 - on Vlan 1

  User 2 group - apply ACL 2 - on the Vlan 1

  3 user group - apply ACL 3 - on the Vlan 1

  The problem appears only for wireless users, he does not see on wired users as the ACLs can be applied successfully without restriction as to the switches.

  Any suggestion is appreciated.

  Thank you.

  In fact, you have limitations on the side of the switch as well. Long ACL can deplete resources AAGR of the switch. Take a look at this link:

  http://www.Cisco.com/c/en/us/support/docs/switches/Catalyst-3750-series-switches/68461-high-CPU-utilization-cat3750.html

  The new WLCs based on IOS XE and not the old OS Wireless/Aironet will provide the best experience in these matters.

  Overall, I see three ways to overcome your current number:

  1. reduce the ACL by making them less specific

  2 use L3 interfaces on a switch L3 or FW and the ACL is applied to them

  3. use the SGT/SGA

  I hope this helps!

  Thank you for evaluating useful messages!

• RVS4000 IP access lists

  Hi all

  I'm trying to block the access of 1 VLAN to another without disable InterVLAN routing.

  In my access list entry, I have the following:

  Deny all protocols, Source LAN interface. Source 192.168.8.0/24 network address (VLAN I want to block); Destination network address of 192.168.1.0.

  It seems like it should work but hosts the 192.168.8.0 network allows access to the 192.168.1.0 network. If I disable InterVLAN routing it blocks traffic between VLANs, as you would expect. In the future I intend to have another VIRTUAL local network that I do not want the route between the VLANS.

  Any help would be appreciated,

  Thank you!

  Brian

  IP based ACL of RVS4000 is designed to limit traffic between LAN and WAN (two-way), but not traffic inter - VLAN. So the scenario is unfortunately not supported.

• PIX 535 and access lists

  Hello

  We have a Cisco PIX 535. By default, traffic on one more secure interface with a lower security level is allowed, what is?

  OK, I have a doubt, I had to define an access list entry to allow a telnet connection between inside and outside. There is no rule against that traffic, but without this rule the telnet connection cannot be established.

  And my question is: why? It is not supposed to be allowed by default?

  Thanks in advance.

  Higher default-> bottom is allowed... However, once you add instructions permit, it is implicitly deny all at the end. So, if you allow ftp and ssl web... so by default, any other traffic is denied and you need to be precise with your permit.

• Access-list command not supported in the 2.2 FWSM (1)

  Hi Netpros

  I am facing a strange problem with one of my FWSM installed in my spare box 7609.

  I have a FWSM installed in live production network, in which the caught watch access list supported and I am able to set up their place, but in the alternative box, I am unable to do so when I have? to get the command supported, it doesn't either up the access-list command.

  The two boxes run upward with 2.2 (1) and on different 7609 boxes.

  Basically, I want to do the CLI or the tested features up to in my box of spare before you go and implement the same on the live production network.

  I have attached both the version of the show, but also the supporting documents.

  Pls do not help to find where I m lack somehting here :-(.

  regds

  Your spare module is configured in mode 'multiple context', where you can create up to 100 logical firewall within one FWSM. In this mode, when you the meeting into the FWSM, you enter in what we call the context of the system in which all you can do is set the other contexts. In the context of the system there is no notion of the lists of access or something like that, and that's why you can't see these commands you.

  You want to deliver the FWSM in unique context mode by running the command:

  simple mode

  Reboot and then when he comes back to the top you'll be good to go.

• Access list ID # on a PIX firewall

  Is anyone know what of the identifier access list on a pix firewall?

  Standard IOS = 1-99

  Extended IOS is 100-199.

  SW = PIX?

  There is no "limit" by Word to say in the Pix. These limits are in IOS because they define what 'type' of acl, it's IE APPLETALK, IPX, IP etc etc. Pix IP is therefore not necessary for this type of identification.

  access-list 100000000000000; 1 items

  allow line of the access list 1 100000000000000 ip any a (hitcnt = 0)

  Jason

• card crypto access lists / problem if more than one entry?

  Access list for IPSec enabled traffic.

  I've been recently setting up a VPN between two sites and I came across the following problem:

  I wanted to install a VPN that only 2 posts from site A to site B, a class C network

  So I created a list of access as follows:

  access-list 101 permit IP 192.168.0.1 host 192.168.1.0 0.0.0.255

  access-list 101 permit IP 192.168.0.2 host 192.168.1.0 0.0.0.255

  When I applied the access list above to map (match address 101) encryption, I quickly realized that only the first host (192.168.0.1) was successfully encrypted beeing while the other could not. I've been geeting on ipsec debugging errors saying that traffic to 192.168.0.2 denyed by the access list.

  When I changed the access list above with the following

  access-list 101 permit IP 192.168.0.1 0.0.0.255 192.168.1.0 0.0.0.255

  two items of work could successfully encrypted through IPSec tunnel.

  To look further into it, I realized that only the first entry of the IPsec access list has been really tested for the corresponding traffic!

  Is this a normal behavior or a known Bug? No work around for this problem?

  Kind regards.

  If you have ipsec-manual crypto map in crypto ACL, you can specify that an ACE. Check 12.2 docs:

  Access lists for labelled as ipsec-manual crypto map entries are limited to a single permit entry and the following entries are ignored. In other words, the security associations established by this particular entry card crypto are only for a single data stream. To be able to support several manually created security for different types of traffic associations, define multiple crypto access lists and then apply each a separate entrance card crypto ipsec-manual. Each access list should include a statement to define which traffic to protect.

• How can I clear counters access-list on a pix firewall

  How can I erase the hitcounts on an on a pix firewall access list without resetting the pix?

  It would be clear access-list on a router counters.

  Thanks in advance

  Steve

  access list counters Clear

• Critical auth and limited access-list

  I play just with ISE 1.1.4 and auth critical, but I have a pretty locked down from the default access on ports list. Is it possible to replace a list of very restrictive access by default in the event of critical auth?

  It seems as if you are relieant on DACLs to provide access for devices (closed or similar mode) auth criticism is not a viable option?

  Or have I misunderstood, and perhaps "action dead event server authentication allows voice" more I waited.

  I guess I'm looking for something like "event action dead access-list less-restrictiveACL server authentication."

  Thank you

  Gas

  Why not flip it on its head and have your less-restrictive-ACL default and impose more restrictive things through dACL?

• Routing VPN access list

  Hello

  I have a PIX 525 to my main site and a 1721 router at a remote location. I used the PDM and the SDM to configure site-to-site IPSec VPN connection. In my private network, I use 10.1.0.0/16 for the main site and 10.x.0.0/16 (where x = 2-47) to remote sites.

  The remote site with the VPN connection uses 10.19.0.0/16. When I originally created this VPN, I configured the traffic to flow from the remote site to 10.1.0.0/16 only. This means that the remote site cannot speak to any other remote sites, just the main site.

  I need to modify the access list to solve this problem. The relevant part of the remote site access list is now:

  access-list 103 allow ip 10.1.0.0 0.0.255.255 10.19.0.0 0.0.255.255

  access-list 103 deny ip 10.19.0.0 0.0.255.255 everything

  Can I change the subnet mask in the first line and put the second line first?

  access-list 103 deny ip 10.19.0.0 0.0.255.255 everything

  access-list 103 allow ip 10.0.0.0 0.255.255.255 10.19.0.0 0.0.255.255

  Or should I let the deny at the end statement, and add a line for each of the other remote sites:

  access-list 103 allow ip 10.1.0.0 0.0.255.255 10.19.0.0 0.0.255.255

  access-list 103 allow ip 10.2.0.0 0.0.255.255 10.19.0.0 0.0.255.255

  access-list 103 allow ip 10.3.0.0 0.0.255.255 10.19.0.0 0.0.255.255

  access-list 103 allow ip 10.4.0.0 0.0.255.255 10.19.0.0 0.0.255.255

  ... (others)

  access-list 103 deny ip 10.19.0.0 0.0.255.255 everything

  Thank you.

  John

  John

  Help the additional configuration information that you have posted. There are still a few things which I hope could be clarified. It seems that you have 46 remote sites and only is connected via a VPN. How have the other connectivity? It is all over the links within your private network? Is there than any NAT involved in these other connections?

  In my previous answer, I assumed that there will be multiple VPN connections, revealing your additional information is not the case. So my comment about limitations in PIX for talk of talks is true but not applicable to your situation.

  Other remote sites are also coming via the VPN? If yes access list 100 which the 1721 uses to identify the IPSec traffic (and that was not in your posted material) will probably have to be changed.

  According to access list 103 is concerned, I guess that the deny ip 10.19.0.0 0.0.255.255 is an anti-spoofing measure? If so, I would probably advocate put it as the first entry in the access list. What about if you want to use ip 10.0.0.0 allow 0.255.255.255 10.19.0.0 0.0.255.255 or a series of individual licenses, according to me, a point to consider is that allowed 10.0.0.0 0.255.255.255 will allow any space of 10 addresses. It seems that you use 1 to 47. What happens if something came through 10.122.x.x? I suggest a compromise approach. You can use this:

  IP 10.0.0.0 allow 0.31.255.255 10.19.0.0 0.0.255.255

  ip licensing 10.32.0.0 0.15.255.255 10.19.0.0 0.0.255.255

  This would allow 1 to 47 but not others.

  HTH

  Rick

• Access list ASA Error | ERROR: % incomplete command

  Hi all

  I am trying to enter the following rule but I get an error message, I have a similar rule already inside the firewall, so I don't get really what is the problem and how to go about troubleshooting. Can anyone help?

  acl_inside list extended access allowed object-group 16-09-08F 132.235.192.0 255.255.192.0 eq https Journal

  (network-config) # access - list extended acl_inside permitted object-group$

  acl_inside list extended access allowed object-group 16-09-08F 132.235.192.0 255.
  255.192.0 log https eq
  ^
  ERROR: % name host not valid

  SAME THING WITHOUT JOURNAL

  (network-config) # access - list extended acl_inside permitted object-group$

  acl_inside list extended access allowed object-group 16-09-08F 132.235.192.0 255.
  255.192.0 eq https
  ERROR: % incomplete command

  SAME STUPID MISTAKE,

  THE SIMILAR RULE;

  # ACCess-list HS | I have 132.235.192.0
  permit for line acl_inside of access list extended 2767 tcp object-group 16/06/29 X-2 132.235.192.0 255.255.192.0 eq https

  ???????

  I'm not sure that this ensures a case of cisco?

  FW100ABCx (config) # 16-09-08F object-group network
  FW100ABCx(config-Network) # host network-object 172.191.235.136
  Add items (host to network-object 172.191.235.136) to grp has failed (16-09-08F); the object already exists
  FW100ABCx(config-Network) # host network-object 172.191.235.135
  Add items (host to network-object 172.191.235.135) to grp has failed (16-09-08F); the object already exists
  FW100ABCx(config-Network) # host network-object 172.191.235.134
  Add items (host to network-object 172.191.235.134) to grp has failed (16-09-08F); the object already exists
  FW100ABCx(config-Network) # host network-object 172.52.134.76
  Add items (host to network-object 172.52.134.76) to grp has failed (16-09-08F); the object already exists
  FW100ABCx(config-Network) #.
  FW100ABCx(config-Network) # acl_inside of access allowed object-group list $

  acl_inside list extended access allowed object-group 16-09-08F 132.235.192.0 255.255.192.0 eq 443
  ERROR: % incomplete command

  Hello Hassan.

  You're missing the key word of Protocol (tcp/udp)
  Try this:

  the object-group 16-09-08F network
  host of the object-Network 172.191.235.136

  acl_inside list extended access permitted tcp object-group 16-09-08F 132.235.192.0 255.255.192.0

  Concerning
  Dinesh Moudgil

  PS Please rate helpful messages.

• Router Access List - where it is applied?

  I seem to be missing something here.  I have a 1841 router that has an access list configured and it actually loses packages based on this access list. I can't for the life of me see where this Access List is applied. Can anyone provide an overview?  Here is the result of the "Show Run":

  R - H1BR1 #sh run
  Building configuration...

  Current configuration: 3391 bytes
  !
  ! No change since the last restart configuration
  !
  version 12.4
  horodateurs service debug datetime msec
  Log service timestamps datetime msec
  no password encryption service
  !
  R-H1BR1 host name
  !
  boot-start-marker
  boot-end-marker
  !
  County of logging
  logging buffered 51200
  no console logging
  !
  No aaa new-model
  IP cef
  !
  !
  !
  !
  no ip domain search
  domain IP p911.positron name - psap.com
  name of the IP-server 10.4.0.1
  name of the IP-server 10.4.0.2
  name of the IP-server 10.5.0.3
  name of the IP-server 10.5.0.4
  IP multicast routing
  Authenticated MultiLink bundle-name Panel
  !
  !
  username * secret privilege 15 5 *.
  Archives
  The config log
  hidekeys
  !
  !
  TFTP IP source interface FastEthernet0/0.1
  !
  !
  !
  interface Tunnel5
  Description * TUNNEL to NODE B (Multicast only) *.
  IP 10.250.4.1 255.255.255.252
  IP pim-interval between queries 1
  origination-State pim IP 4 refresh rate
  PIM dense mode IP
  IP tcp adjust-mss 1436
  KeepAlive 1 6
  tunnel source 10.4.15.254
  tunnel destination 10.5.15.254
  !
  interface Tunnel25
  Description * TUNNEL at 25 SATELLITE (Multicast only) *.
  IP 10.250.25.1 255.255.255.252
  IP pim-interval between queries 1
  origination-State pim IP 4 refresh rate
  PIM dense mode IP
  IP tcp adjust-mss 1436
  KeepAlive 1 6
  tunnel source 10.4.15.254
  tunnel destination 10.25.15.254
  !
  interface FastEthernet0/0
  Description * to switch 1 last Port *.
  no ip address
  Speed 100
  full-duplex
  KeepAlive 1
  !
  interface FastEthernet0/0.1
  Description * BACKROOM LAN *.
  encapsulation dot1Q 1 native
  IP 10.4.15.253 255.255.240.0
  neighbor-filter IP pim DENY
  IP pim dr-priority 255
  IP pim-interval between queries 1
  origination-State pim IP 4 refresh rate
  PIM dense mode IP
  no ip mroute-cache
  KeepAlive 1
  45 minimum waiting time charge 60
  Watch 1 ip 10.4.15.254
  1 1 3 sleep timers
  1 standby preempt delay minimum charge 15 15 15 sync
  !
  interface FastEthernet0/1
  Description * BETWEEN R1 and R2 *.
  IP 10.252.204.1 255.255.255.252
  no ip proxy-arp
  IP-range of greeting 1 2604 eigrp
  IP - eigrp 2604 2 hold time
  no ip mroute-cache
  Speed 100
  full-duplex
  KeepAlive 1
  !
  interface FastEthernet0/0/0
  Description * WAN to H2 connection *.
  IP 172.16.215.246 255.255.255.0
  Speed 100
  full-duplex
  KeepAlive 1
  !
  interface FastEthernet0/0/1
  Description * connection to AAU *.
  IP 192.168.10.1 255.255.255.0
  Speed 100
  full-duplex
  KeepAlive 1
  45 minimum waiting time charge 60
  Watch 3 ip 192.168.10.3
  sleep timers 3 1 3
  3 standby preempt delay minimum charge 15 15 15 sync
  !
  Router eigrp 2604
  redistribute static
  passive-interface FastEthernet0/0.1
  passive-interface FastEthernet0/0/1
  10.4.0.0 network 0.0.15.255
  Network 10.252.0.0 0.0.255.255
  network 172.16.215.0 0.0.0.255
  No Auto-resume
  !
  IP forward-Protocol ND
  IP route 10.119.138.0 255.255.254.0 192.168.10.13
  IP route 10.121.1.0 255.255.255.0 192.168.10.13
  !
  !
  no ip address of the http server
  IP mroute 10.5.0.0 Tunnel5 255.255.240.0
  IP mroute 10.25.0.0 255.255.240.0 Tunnel25
  !
  standard IP DENY access list
  deny all
  !
  interface FastEthernet0/0.1 source journaling
  logging server-arp
  record 10.4.0.1
  !
  !
  control plan
  !
  !
  Line con 0
  local connection
  line to 0
  line vty 0 4
  exec-timeout 0 0
  local connection
  transport telnet entry
  line vty 5 15
  exec-timeout 0 0
  opening of session
  transport telnet entry
  !
  Scheduler allocate 20000 1000
  NTP-period clock 17177530
  NTP 10.4.0.1 Server
  end

  R H1BR1 #.

  I guess you are looking for

  interface FastEthernet0/0.1
  Description * BACKROOM LAN *.
  encapsulation dot1Q 1 native
  IP 10.4.15.253 255.255.240.0
   neighbor-filter IP pim DENY

  ?

  Best regards

  Milan

• allow icmpv6 in ipv4-access list in the tunnel

  Hello

  I have a little problem with an access list ipv4 blocking my ipv6 tunnel.

  My tunnel works and is as follows:

  interface Tunnel0

  no ip address

  IPv6 address

  enable IPv6

  source of tunnel

  ipv6ip tunnel mode

  tunnel destination

  So when I apply the below, access list to the WAN interface on the sense IN, IPV6 stops working (everything works on IPV4 when the access list is applied). I mean, I cannot ping ipv6.google.com or ipv6.google.coms IP. I can still ping the IP ipv6 remote tunnel ().

  Access list that I apply is the following:

  allow tcp any a Workbench

  allowed UDP any eq field all

  allowed any EQ 67 udp no matter what eq 68

  allowed UDP any eq 123 everything

  allowed UDP any eq 3740 everything

  allowed UDP any eq 41 everything

  allowed UDP any eq 5072 everything

  allow icmp a whole

  deny ip any any newspaper

  Here are the requirements to the supplier of tunnel, and one of the entries is ICMPv6. Is it possible to allow icmp v6 on a Cisco access list?

  TCP 3874	TIC.sixxs.net	IPv4	ICT (Information Tunnel & Control Protocol)	Used to retrieve the information of tunnel (for instance AICCU)	Uses the TCP protocol and should work without problems
  UDP 3740	PoP	IPv4	Heartbeat Protocol	Used for signalling where is the endpoint current IPv4 of the tunnel and he's alive	the user only to pop out
  Protocol 41	PoP	IPv4	IPv6 over IPv4 (6 in 4 tunnel)	Used for tunneling IPv6 over IPv4 (static tunnels + heartbeat)	We have to appoint the internal host as the DMZ host that leaves usually passes the NAT
  UDP 5072	PoP	IPv4	AYIYA (anything in anything)	Used for tunneling IPv6 over IPv4 (AYIYA tunnels)	Must cross most NAT and even firewalls without any problem
  ICMPv6 echo response.	Tunnel endpoints	IPv6	Internet Control Message Protocol for IPv6	Used to test if a tunnel is alive in scathing tunnel endpoint (tunnel: 2) on the side PoP of the tunnel (tunnel: 1) on the tunnel	No, because it is happening inside the tunnel

  I missed something?

  sidequestion: I added the "deny ip any any newspaper" in the access list, but it adds no registration entry in the log (show log). I'm sure it hits because when I run "display lists access": 110 deny ip any any newspaper (2210 matches).

  Hope someone can help me.

  Hello

  In the ACL above you are atleast specifying source and destination UDP and 41 SOURCE ports

  If you specify IPv6 over an IPv4 ACL I guess that the format would be to "allow 41 a whole" for example.

  Although I have barely touched IPv6 myself yet. Wouldn't it be possible to configure ACL Ipv4 and IPv6 ACL and attach them to the same interface?

  But looking at my own router it does not support these commands so that other devices to make. Maybe something related model/software I guess.

  -Jouni