Cisco Switching/Routing :: 192.168.10.10 / VLAN Access List Not Working?
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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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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Nov 23, 2011
Not sure why the N7K M1 card doesn't take this command. It works on other N7K at different site. [code]
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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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Dec 11, 2012
I implemented access list on cisco 3560 switch but it never works. I want to block access from network B to Network A and allow from Ato B
Network A. 10.0.12.0/24
Network B 10.0.24.0/24
The configuration is
interface Vlan1
description Data VLAN
[Code].....
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Apr 11, 2011
I'm looking to implement a vlan filter to keep unnecessary stuff off my access-layer. Things like IPv6, IPX etc. I really only want IPv4, ARP and 802.1q on these 4500s. I know on 3750, 3560s etc, when I create the mac access-list, I can do it by ethertype, but on the 4500, I dont have that option.
4th_floor(config)#mac access-list extended Drop-traffic
4th_floor(config-ext-macl)#permit any any ?
protocol-family An Ethernet protocol family
<cr>
4th_floor(config-ext-macl)#permit any any protocol-family ?
appletalk
arp-non-ipv4
decnet
[Code]....
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Apr 19, 2012
I have an 1800 isr that is running with port forwarding only. It is running a series of ip nat inside source static address port address port commands. It does not have an access list bound to the outside interface. This is working fine, but i am wondering if this is a security concern?
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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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Jan 15, 2012
i have one Cisco 3750, am using it as Core Switch where i have 6 more access switches are connected deirectly, and we are using VLANs in our network with the IP reange of 172.16.0.0 , now we had a new Internet connection which is dedicated to Exchange Server only.So we have TWO internet connection One for internet access to all users and another one for only Exchange Server.internet connection for the users is termiated at a Cisco 1700 Series Router and Internet for Exchage Server is terminated at a Cisco ASA Firewall.Now the problem is how can i write an access list, which says that all packets from Exchange server should be routed to ASA Firewall , and all other packets shoulde route to Cisco Router.IP address os Exchange server is 172.16.2.1, 172.16.2.2.
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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 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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Aug 14, 2012
I configure multiple static RPs and one of the ACLs denies a source will it move on to the next entry that covers it in another acl? [code] i.e. 1.1.1.1 will be used as the RP for 224 to 238 and 2.2.2.2 will be used as the RP for 239.Will that work correctly, i.e. if a source is trying to register with the router and its for the group 239.1.1.1, will it be denied against the first RP and then permitted against the second RP?
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Jan 9, 2012
I have a layer 3 switch, 3550.I have several vlans on there just for playing around with. One of the vlans, has a vonage linksys box attached to it with a UK number attached. From time to time telemarketers call at 03:00 in the morning, this as I'm sure you can imagine is not much fun. The linksys box gets 192.168.3.3 as it's ip.The switch is connected to a non cisco router at 192.168.0.1
interface FastEthernet0/24
no switchport
ip address 192.168.0.2 255.255.255.0
I was thinking a time based access list would work best I have tried several variations but the phone still rings. I have tried access-list 1 deny host 192.168.3.3 permit ..... and more extensive lists but the phone still rings. I have not applied the time-range yet, so that's not the problem.I have applied the list to the vlan interface and to fa0/24 but it's not working.
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Dec 11, 2011
I need to enable/disable a mac access-list on a 2960 scheduled by time. The switch has lanbasek9-mz.122-44.SE6. As the mac access-list can not support time ranges, I tried EEM but seems like it is not supported in this device.
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Nov 7, 2011
We have a gateway on a 4503, say on port 2/1, and we only want the other devices that are plugged into the 4503 to be able to talk to the gateway and thats it. The other devices are Motorola TUT DSL devices and they plug into the 4503 directly.
Normally "switchport protected" would make this very easy to keep stuff on one port from talking to other ports but with 4500's you are not able to do that command. So we implemented a MAC Access-List Extended ACL. Here is what we did
mac access-list extended BLAH
permit #host 0000.XXXX.YYYY any
interface range fa 2/5 - 20
mac access-group BLAH out
The MAC address 0000.XXXX.YYYY is the MAC address of the gateway that is plugged into Fa2/1 and the DSL TUT devices are plugged into ports Fa2/5-20. We would think that this config would only allow devices on the TUT DSL to talk only to the Gateway but we don't really think this is happening. The TUT devices are learning about MAC addresses that are on other TUT devices.
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Jul 15, 2012
I have 3 3560 switches which are configured with trunks between them. They run vlan 10, 11 & 12. I have a 'core' switch (switch 1) of these 3 to which an MPLS router is connected on vlan12. I in addition have another switch hanging off the 'core' switch via a routed link (switch 4). I have EIGRP configured as a stub and as such the IP address on the routed link at the core switch end is of a /24 from v lan 1 on the other switch. This makes the route directly connected and therefore distributed via EIGRP stubs. Switch 1 is then exchanging routes with the MPLS router (via EIGRP).
The problem I have is that from any sub net on any switch (switch 1, 2 or 3) I can ping 192.168.13.1 (switch 4). When I try and ping switch 4 from over the MPLS I am unable to. If I trace to the switch I see it reaches the outside of the MPLS router, but is then unresponsive. The same applies if I try to ping switch 1 on 192.168.13.2. Any of the other IP addresses of switch 1 respond.
The MPLS network is a managed solution to which I have no access. I'm told that the MPLS provider is able to ping switch 1 & switch 4 on the 192.168.13.x addresses from a remote router (192.168.32.2). I have tried from a switch on the same L2 sub net (192.168.32.1) and I don't get a response.
From switch 4 I am able to ping the switch on 1 of it's interfaces (192.168.19.1), but not the interface I mentioned above 192.168.32.1. There are no access lists in place on the switches and no firewalls between the sites.
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Mar 21, 2012
I have two 5548's in sync mode: I have an existing ACL and I want to add a new line to it, but after I do and try to commit it states the verify failed. [code]
I have to add access list to both switches not in config sync mode.
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Sep 4, 2012
I am using cisco 1841 LAN router, I need to block MAC address i have applied the command access-list 1102 deny 0000.0000.0000.0000 mac address..... but it does not work.
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Nov 9, 2011
i am facing a strange issue on cisco 2950 .IOS (tm) C2950 Software (C2950-I6K2L2Q4-M), Version 12.1(22)EA9, RELEASE SOFTWARE (fc1) suddenly my phone stopped working for DTMF tone, i mean when i dial a conference bridge lets say 6565 and then it ask for conference bridge code lets say 12345, it doesnt recognize the code and says code is invalid, SIP Proxy is Asterisk in this case.Currently my cisco switch port is configured for dual data + voice vlan, where DTMF dont work, sample config below [code]
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Jun 3, 2012
We have two Cisco switches with one 3560 and one 3750 we have created a new Vlan 4 with IP 10.1.3.x 255.255.255.0 - no shut then assigne to gi 2/0/46 on the 3560 Vlan 4 ip address 10.1.3.x 255.255.255.0 no shut then assign to FA0/45. All interfaces are up up along with the Vlan up up, we can ping the local IP address bu not able to pint the other switch.
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May 21, 2006
I am trying to use deny mac acl in the 4500 series switch runnning cisco IOS but the command seems to be not working.
Here is the command,
mac access-list extended ABC
deny host 0001.8052.25FF any
int f4/11
mac access-group ABC in
Is there anything I am missing or is it a bug.
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Jun 3, 2012
I'm getting this error message on syslog server (Kiwi syslog)access-list logging rate-limited or missed XXXX packets i did the following commands but still I'm getting the error :logging buffered 16386 debugginglogging rate-limit all 5000no logging consoleno logging monitorip access-list logging interval 30000ip access-list log-update threshold 30000 i don't want to report to the console or monitor i want to report direct to syslog server, because I'm monitoring all the traffic (permit ip any any log) !
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Apr 2, 2013
We are having Cisco router 1002 ASR and 2841 switch. Some times perticular VLAN user will not be able to access the network but from the same switch others VLAN users can able to access. We were getting ARP entries in router but we cannot ping the IP's. Even we clear the ARP entries. Once we restart the switch users can access the network. We have changed vlan ports, uplink too. but problem not solved. and we observed CPU utilization will be going 70-80% some times and at same time switch hangs.
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Feb 20, 2013
We have 3 VLAN in our cisco 3750G switch. VLAN 1 10.1.0.0/24 for domain network, VLAN 2 10.2.0.0/24 for student and VLAN 3 10.3.0.0/24 for public. We have one printer 10.3.0.206 in the VLAN 3 and want to allow student server 10.2.0.253 in the VLAN 2 to access the printer. How can we configure access-list? Here is current configuration.
ip access-list extended publicaccess
permit icmp any any
permit ip any host 10.2.0.253
permit tcp any any established log
deny ip 10.3.0.0 0.0.0.255 10.1.0.0 0.0.0.255
deny ip 10.3.0.0 0.0.0.255 10.2.0.0 0.0.0.255
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Oct 31, 2012
i have router 1841 have 2 interface.i make routing between vlan by subinterface in router and in switch trunk but vlan 5 cannot access internet
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Apr 1, 2013
I am using a Cisco SG-300 28 port switch in layer 3 mode as my default gateway for all my devices. I have two vlans on the switch, vlan 1 and vlan 4. Both are pulling valid IP addresses in their scope from the DHCP server, and both have valid DNS settings. I set a static route to the Internet on the switch to our firewall (192.168.5.254). All devices connected to vlan 1 are able to access the Internet, however all devices connected to vlan 4 cannot get past the switch. A tracert from one of these devices shows it hits the switch as the gateway, but gets no further. [code]
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Feb 6, 2012
I have a 2960-S running the lastest software for testing on my bench:
[code]
Switch Ports Model SW Version SW Image
------ ----- ----- ---------- ----------
* 1 24 WS-C2960-24-S 15.0(1)SE2 C2960-LANLITEK9-M
[/code]
I have set up VLAN 2 on 192.168.2.0/24 with the switch as the DHCP server. The switch is connected to an RV082 router which is at 192.168.1.65/27. Once I figure out what I doing I'll eventually shift that to 192.168.1.0/24 or something similar. So I have my switch acting as the DHCP server for VLAN 2 but I can't figure out how to get it to access the internet.
I found this example to set up the DHCP server:
[code]
###################################
this works to get vlan 2 to serve ips
conf t
[Code].....
The RV082 doesn't support trunks AFIK and I'm pretty much a newb at this stuff. TIA. I guess I should get a real router and I most likely will but I'd like to get this working if possible before taking the next plunge.
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Dec 11, 2011
We have a group of computers on their own VLAN. A router allows internet access while keeping them sandboxed. We don't want them accidentally connect to our production network. We blocked their wireless MACs in unauthorized WAPs. I'd like to do the same thing for their ethernet MACs on our switches, (a mixture of 2950,2960 and 2960G currently testing on C2960-LANBASE-M, Version 12.2(25)SEE2). I've been unable to locate the correct method on google, by searching these boards or in the command reference.
What is the best practice for blocking a group of MACs from accessing a particular VLAN on a network consisting of several Layer 2 Switches?
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May 9, 2012
At the core of my network I have two Nexus 5548's with the routing/L3 daughter installed. They have a default route that points to my ASA 5520 for Internet access. I have configured a VLAN that I do not want to have access to the Internet. What is the best way of preventing this access? ACL on the Nexus or Firewall rules on the ASA?
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May 26, 2013
I have a cisco 876 with, c870-adventerprisek9-mz.124-6.T9.bin. I have configured a VLAN with ID 230, an SVI with IP 192.168.230.1/24 and I have assigned switch port fa 2 to it…
interface Vlan230
ip address 192.168.230.1 255.255.255.0
VLAN ISL Id: 230
[Code]......
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Mar 19, 2013
I have one issue on Vlan in Cisco 3750X switches , I have 2 Offices , I am sitting at corp OFfice and i have one 3750 ( 10.10.1.36)Switch at my location , in my remote office i have one more switch 3750 ( 10.10.33.1) and i am able to access the both vlan IPS with out any issue , now i have some network components in Vlan33 ( 10.10.33.1) at my remote office . i am able to ping 10.10.33.1 IP from my corp office , but i am not able to ping any network devices in 10.10.33.5 example : 10.10.33.5 is my Cyberoam IP at remote location and i am not able to ping , i have taken a trace route and not able to find the issue as i am not much femilar , ping 10.10.33.5 at remote location devicec
I am giving the Configuration for both locaitons below :
10.10.1.36 - Corp Office 3750 Switch:
sh run
L3-#sh running-config
Building configuration...
[Code].....
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Mar 18, 2013
I've got a 3750x stack set up as my core switch (only a small-ish environment) - I'm shortly going to be deploying an enterprise wireless network with Corporate and Guest SSID's. I'm going to be putting all traffic from the Guest SSID in VLAN 244, and don't want it to have access to any of the other VLANs (1 (Legacy Eqpt), 4, 8, 12, 16, 20, 24, 28, 32, 248 & 252).
IP ranges for all the main VLANs are:
1: 10.0.0.x/22
4: 10.0.4.x/22
8: 10.0.8.x/22
12: 10.0.12.x/22
16: 10.0.16.x/22 etc etc (you get the pattern)
I'll probably give Guest traffic (VLAN 248) the IP range 192.168.10.x/22 (not because I NEED that many addresses, but it's easier for everyone to remember/understand if I keep the subnet masks the same all round). However I also have a CCTV VLAN (252) which already has the range 192.168.0.x/24, which some people in other VLANs WILL need access to.
So my question is: What is the syntax for the ACL on my 3750x (IP base - 15.0.2) to prevent traffic from VLAN 244 gaining access to any of my other VLANs. I'm making a broad assumption here that a layer 3 switch is perfectly capable of supporting that function? I need ALL the syntax for setting up ACL's - I've never done it before
My gateway device by the way is 10.0.4.1, and I do have inter-VLAN routing set up on the core switch (obviously).
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