Cisco :: Access List In Vlan Interface
Jan 12, 2013
How to apply access list on Vlans ?
my Scenario is
13 Vlans in cisco 3560 switch (Vlan 10,20,30........ 130)
vlan 10 ---- ip range 192.168.10.0/24 interface vlan 10 ip add : 192.168.10.1
vlan 20 ---- ip range 192.168.20.0/24 interface vlan 20 ip add : 192.168.20.1
here i want to block vlan 10 access to vlan 20 i created extended access list deny ip 192.168.10.0 0.0.0.255 192.168.20.0 0.0.0.255
and applied in interface vlan 10 as out now i cant able to access any host in vlan 20 (host 192.168.20.1) but i can able ping vlan 20's gateway 192.168.20.1
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Apr 2, 2013
I have a router in front of a few firewalls on an internet link. All traffic from the inside network must go through one of the firewalls to get out through the router and similarly there is a dmz on one of the firewalls.I am trying to make sure the router is fully hardened.Should I apply an access list on the outside interface of the router along with the access list for management access?
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Mar 11, 2013
This is a working example using static. But it doesn't work with the dynamic interface or I'm doing something wrong. Need to get rdp access to my laptop.
ASA Version 8.4(5)6
!
hostname ciscoasa
enable password 8Ry2YjIyt7RRXU24 encrypted
passwd 2KFQnbNIdI.2KYOU encrypted
names
[code]...
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Sep 5, 2012
Extended IP access list VLAN20
10 permit tcp any any established
11 permit icmp any any
20 permit tcp any 192.168.20.0 0.0.0.255 eq 80
30 permit tcp any 192.168.20.0 0.0.0.255 eq 443
40 deny ip any any log
[code].....
Above is the network diagram and access list for VLAN 20 and VLAN 30, applied on incoming direction of each valn.But still able to access other port which is not on access list, tried changing the direction with no luck.Inter vlan routing is enabled on CoreSwitch default router is 192.168.10.10
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Nov 14, 2011
I have one computer connected to the 4506 that management does not want this PC to have access to anything on our network except our DHCP server and the one printer that resides on our network. I created an extended access list as follows. Our network is the 10.10.x.x and the external addresses the PC needs to access is 11.1.x.x. Once this PC is rebooted, it is unable to access DHCP to get the needed IP address it bounces back to a 169.x.x.x address and stops working.
Extended IP access list 2000
permit tcp host 10.10.200.242 host 11.1.200.1 (gateway)
permit tcp host 10.10.200.242 host 11.1.2.151 eq smtp (access from the pc to external server for smtp)
permit tcp host 10.10.200.242 host 11.1.2.149 eq 5721 (access from the pc to external server for remote access)
[ code]...
Then I applied the access-group 2000 on the interface the PC is connected to. What am I missing for DHCP to work and for this PC to always get the ip address that is reserved?
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Feb 6, 2013
I have a LIII Switch Cisco 3750x ,with diffrent Vlans , Some users are in Vlan 102 (10.10.2.0) and Some Users are in Vlan1 (10.10.1.0) , now i want to restrict the Vlan102 users to access Vlan1 , i am pasting my configuration below , how to create a access list .
interface Vlan1
ip address 10.10.1.36 255.255.255.0
ip helper-address 10.10.1.36
[Code].....
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May 19, 2013
In my core Switch,there are 2 v LAN(V LAN 1 & V LAN 2)my switch is Cisco 4948,so be default ip routing is enable in it. My all servers (DHCP,HTTP,HTTPS) are in v LAN 1 & internet is also in v LAN 1.
My requirement is that v LAN 1 user should not communicate with the v LAN 2 and vice versa. But the v LAN 2 users need an access of all servers and internet which is in v LAN 1. How to configure the access-list. I have try on Packet tracer which i have attached.
note:v LAN 2 user should get the IP from dhcp server which is in vlan1.
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Feb 6, 2013
I am trying to harden my Nexus box and I am not able to ACL assigment command. Following are the commands I am trying to add.
interface cmp-mgmt module 5
Ip access-group NETWORK_MANAGEMENT_ACCESS in
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Sep 10, 2012
I'm configuring a 5505 for a remote office. Until they are assigned a static ip by the provider I will have to use the providers dhcp address. How do I construct an access list for the outside interface using the external address if I don't know it yet? is there a commnd that will insert the ip address in to the access list once one is assigned?
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Jun 8, 2011
I've got an ASA 5505 running 6.3 I've connected the management interface to our management vlan (which contains switch IPs, ilo's etc)Is there a way to allow access to this vlan from another?
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Nov 21, 2012
i'm going mad on following problem. I'm trying to get 2 networks seeing each other while one of the network is a non VLAN network and the other one is a VLAN network.They should use the same interface so i added VLAN e0/0.122 to the interface e0/0.Send a ping from my asa to both gw-IP's made me happy at first. In second in figured out that i cannot reach any client in the other network. For testing purpose i created an permit acl to any/any for both networks, but the packets still get dropped by the default implicit rule. (deny any/anyMaybe i'm to stupid for this
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Aug 24, 2012
Im trying to simulate a switch in Gns3 and i use 16ESW module in a cisco 3700 router. why im getting this record after i try to filter which vlans pass through my trunk port:Router(config-if)#switchport trunk allowed vlan 2,3,4 Command rejected: Bad VLAN allowed list. You have to include all default vlans, e.g. 1-2,1002-1005.
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Nov 29, 2010
I am trying to allow telnet to port 551 but i couldn't get it to work.I am using a cisco 1720 router running on IOS 12.2.I am using the below commands to set the access list to allow access to port 551 using remote telnet to the Cisco router.hostname R1!interface ethernet0ip access-group 102 in!access-list 102 permit tcp any any eq 551.After i enter the above command the router will disconnect me and i will not be able to connect to it for awhile. Once the router is up i am still unable to telnet to port 551.
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Dec 18, 2011
I have Cisco router 851 at my region site. It has five Fa ports. One of them is connected to ISP and has ip address 10.1.1.2 (for example). It also has vlan 1 interface, that has ip address 192.168.0.1 (also for example). I also have Tun0 interface that goes through ISP network and connects to my hub network. The rest of Fa interfaces are swithcable and they are in vlan 1.The problem is that from hub LAN I can telnet to 10.1.1.2 ip address, but I can't telnet to 192.168.0.1. Whereas I can Ping 192.168.0.1 from my hub LAN.
Topology:
Hub LAN -------ISP---------Spoke Router 851
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Dec 7, 2010
I am trying to roll out a new internet router. The problem I am faced with is the LEC only supports VLAN 1227 and greater, specifically they are assigning me VLAN 2528. I am able to create the sub-interface and setup dot1q encapsulation for VLAN 2528, but the vlan database does not have the ability to add VLAN 2528 to it so I am unable to get layer 2 up and going, thus preventing me from getting the implementation done.
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Mar 19, 2012
i have linksys modem which already working for different v lans then for lab we take other switch 3750 switch and created different v lans. v lans are working fine but we need internet for different v lans for that linksys modem how we can make interface V lan1/
ip address 10.1.1.10 255.255.255.0
ip default- gateway 10.1.1.1
no sh
interface Vlan10
ip address 10.1.2.1 255.255.255.0
no ip route-cache
!!interface Vlan20
ip address 10.1.3.1 255.255.255.0
ip route 0.0.0.0 0.0.0.0 10.1.1.1
ip dhcp pool vlan10
network 10.1.2.0 255.255.255.0
default-router 10.1.2.1
dns-server 10.1.1.1
!
!ip dhcp pool vlan20 network 10.1.3.0 255.255.255.0 default-router 10.1.3.1 dns-server 10.1.1.1
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Apr 22, 2013
Actually I am new to this ASR , in my environment my 6513 is connected ASR , I want to know how can we access and configure VLAN on Gigabit interface which is connected to 6513.
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Dec 20, 2011
How to implement mac access-list in 881 and 892 router ? As you now that we can get additional switch-port in the same router but I can't see the function in this router. I guess the switch port must function like the catalyst 2960 switch.
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Nov 20, 2011
I'm creating an access-list that will contain all networks and host that will be redistribute into EIGRP.Till now, this access-list contains 72 entries but this number can increase anytime.
I'm using a 3750-x layer 3 switch, and I'm wondering how big this access-list can be, regarding CPU and memory utilization and performance.
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Jan 17, 2011
we installed a cisco router in a school with two vlans (VLAN 1 & VLAN 2) VLAN 1 is for teachers and Admin and VLAN 2 is for students. We want so that VLAN 2 shouldn't be able to access any device in VLAN 1 but VLAN 1 should be able to access all devices in VLAN 1 & 2
VLAN 1 192.168.11.0/24
VLAN 2 192.168.12.0/24
I am using VLAN interfaces. I know we have to use some access lists but if i apply
access-list 100 permit ip 192.168.10.0 0.0.255 any
access-list 100 deny ip 192.168.12.0 0.0.0.255 192.168.10.0 0.0.0.255
With this access list two subnets can not access each other. How these access list should look likes ?
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Aug 9, 2012
I'm trying to set up a Guest VLAN for wireless at a client site, and I feel like I'm missing something small in the configuration, since I can't ping any of the VLAN interfaces from my laptop when the address is statically set to something in the 172.20.100.x range.
I've pasted the configs for the ASA 5505 and the 6 switches below for convenience. Near as I can tell, all should be well. The ports are in trunking mode, the "show cdp neighbors" command returns the proper information, VLAN 100 exists on all the switches, etc.
Code:
ASA Version 7.2(4)
!
hostname ASA
domain-name xxxx.local
enable password Cj3LF.ehxXN3xVkxWcxd encrypted
passwd Cj3LF.ehxXN3xVkWcxd encrypted
[Code] ......
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Jul 25, 2011
I was reviewing some old configs at work today and noticed somthing weird in the access-lists. What is this?
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Mar 3, 2011
Trying to work out if I can setup a VLAN interface on a 1721 router.The only interfaces that are listed are the Ethernet (W1-ENET) and the Fast Ethernet interface.I'm still super new to all of this and learn how to change IOS via rommon and TFTP after realizing I had an IOS too large for the memory?
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Mar 23, 2013
May I know the reason why we cannot create interface vlan on Cisco ASA 5510?
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Jan 13, 2013
Whether it is possible to have same vlan on multiple interface on ASA 5510 and higher models ?
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Mar 13, 2013
I have a 10Mbps connection link which I will like to reduce to 5Mbps on a 6509 switch as indicated in the config below. [code] After applying the service policy on the vlan interface, i got this "match vlan is not supported for this interface". I actually tried the rate limit command but I cant see the effect using the speedtest.
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Jun 21, 2010
I'm looking to build (cheaply) some l2tpv3 tunnels across a campus network. I have a pair of 881's and I was hoping to xconnect the VLAN 1 intfcs between the two of them. "xconnect" is not a CLI option on the interface configuration, although it is for the individual Fa0-3 interfaces. Just for grins, I xconnected the l2tpv3 tunnel between each Fa3 on each router, and the tunnel comes up successfully and I can see a session established. I am routing between the WAN interfaces (Fa4) on each. However, L2 traffic is not passing between the two Fa3 interfaces. I can do it backwards, i.e. route between the Vlan1 interfaces and xconnect the Fa4 interfaces (i.e. WAN), and I can see broadcast traffic from the destination network appearing on the local interface. However, I'd really rather have the four interfaces in VLAN1 tunnelled rather than the WAN interface. I am guessing this has to do with ISL vs. 802.1q, since I'm trying to encapsulate VLAN1 as Ethernet and not as dot1q.
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Jan 3, 2013
we've to configure our router 1841 to use both 2 interface Fe for two different vlan (also the second has to go on internet).
Actually we have int Fe0/0 configured with an ip address 192.168.1.1 for lan1 192.168.1.0/24 and we will use the second int Fe0/1 with another ip address like 192.168.2.1 for lan2 192.168.2.0/24.
see below configuration:
[code]...
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Nov 10, 2011
We have a new optical fiber connection from a new ISP (only for Internet) and we found that our Cisco router RV220w won't work with this new connection because is not possible to add the V LAN ID 20 for the WAN traffic, as required by our ISP/connection. Now we would like to know what Cisco routers can support this feature and that can be "similar" to the RV220w or if there is another way to solve this problem and maintain our actual RV220w, because the features on this particular router (apart of the V LAN ID on Wan) are more than enough for us -
We would like to have a “simple” router and with firewall and VPN features as RV220w, because the one that our provider says that works seems to be too much for us Cisco 2951-SEC K9 – We are a small company with a network of around 10 computers and we only need some VPN connections for our sales companies in Europe and workers when traveling (3-5 VPN connections are OK).
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May 13, 2013
we have a cissco 4506-e switch with ios version 03.02.05.SG . We ae currently facing a strange problem . Vlan interfaces configured in he switch are not showing input and output traffic, whereas the traffic is seen on the Gig interfaces mapped to the respective vlans . We also tried configuring the load-interval 30 , but there is no change . Interace 3/5 is mapped to vlan 5 . For this issue we have also done the IOS upgrade from 3.1.1SG to 3.2.5SG recently still the issue is same. [code]
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Jan 29, 2012
Is it possible for me to create 2 vlan interfaces on the 6500 and have them both in the same subnet?
For a specific customer requirement I would like to have a vlan interface on the 6500 as default gateway, sat in it's own vrf, and then route all traffic inbound and outbound to this vlan through the FWSM interface, preferably in the same subnet. I don't think this will be possible so just looking for confirmation either way.
As I will be running EIGRP between a pair of central 6500's and 2 remote offices it will make things much easier for me advertise the connected FWSM interfaces in to EIGRP for access in/out of all my VRF'd subnets. If I need another subnet for each VRF FWSM next hop then I'll have to reditribute a list of statics which I don't really want to do.
The reason I am not just using the FWSM as gateway is because I need to run HSRP across 3 different devices (another 6500 in a second suite), and failover FWSM will only give me 1 level of redundancy for those gateways.
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Apr 6, 2013
Creating an Access Control List
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Jan 12, 2012
so far i also knew that if u assign an access-list to an interface:
for example:
int vlan1
ip access-group 150 in
and the access-list does not exist in the configuration it will block everything meaning it will be an implicit deny empty access-list but lately i've noticed on new routers that its different,if i assign an acl to an interface where the acl doesnt exist in the configuration it acts as permit all,
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