Cisco 837 and access list

Hi all

Sorry if my question sounds stupid, but I had a lot of problems with the syntax of the access list, especially to remove a line in an access list, for example:

Here is my list of access

access-list 120 allow ip 192.168.6.0 0.0.0.255 172.16.0.0 0.0.255.255

access-list 120 allow ip 192.168.6.0 0.0.0.255 172.20.0.0 0.0.255.255

access-list 120 allow ip 192.168.6.0 0.0.0.255 172.17.0.0 0.0.255.255

If I want to delete only this line

access-list 120 allow ip 192.168.6.0 0.0.0.255 172.16.0.0 0.0.255.255

I do not know how, I if do:

no access-list 120 allow ip 192.168.6.0 0.0.0.255 172.16.0.0 0.0.255.255

all the access-list 120 is removed!

Help, please!

Olivier

Hi, this is the usual behavior, if you delete the access list of the entire statement with sequence number is deleted.

You can create a named extended access-list and have the sequence number for each statements.

!

Standard IP access list note

permit 172.10.0.0 0.0.255.255

10.1.1.0 permit 0.0.0.255

permit 192.168.1.0 0.0.0.255

deny all

!

and if you want to delete something in between, or any particular line, you can run the command like this that will remove this line instead of the entire ACL itself...

Standard note of access-list (config) #ip

(config-std-nacl) #no 3

This configuration lines will remove the third line only (which is to allow the 192.168.1.0 0.0.0.255, leaving the other statements)

regds

Tags: Cisco Security

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    4F532D53 5369676E 656C662D 43 65727469 66696361 74652 31 39353534 65642D
    32383439 3630819F 300 D 0609 2A 864886 01050003, 818, 0030, 81890281 F70D0101
    8100CB6B E980F044 5FFD1DAE CBD35DE8 E3BE2592 DF0B2882 2F522195 4583FA03
    40F4DAC6 CEAD479F A92607D4 1 B 033714 51C3A84D EA837959 F5FC6508 4D71F8E6
    5B124BB3 31F0499F B0E871DB AF354991 7D45F180 5D8EE435 77C8455D 2E46DE46
    67791F49 44407497 DD911CB7 593E121A 0892DF33 3234CF19 B2AE0FFD 36A640DC
    2 010001 HAS 3 990203 AND 77307530 1 130101 FF040530 030101FF 30220603 0F060355 D
    1104 1B 301982 17796F75 726E616D 652E796F 7572646F 6D61696E 2E636F6D 551D
    301F0603 C 551 2304 18301680 145566 4581F9CD 7 5F1A49FB 49AC9EC4 678908FF
    2A301D06 04160414 5566 745 81F9CD5F 1A49FB49 AC9EC467 8908FF2A 03551D0E
    300 D 0609 2A 864886 818100B 3 04050003 903F5FF8 A2199E9E EA8CDA5D F70D0101
    60B2E125 AA3E511A C312CC4F 0130563F 28D3C813 99022966 664D52FA AB1AA0EE
    9A5C4823 6B19EAB1 7ACDA55F 6CEC4F83 5292 HAS 867 BFC65DAD A2391400 DA12860B
    5A 523033 E6128892 B9BE68E9 73BF159A 28D47EA7 76E19CC9 59576CF0 AF3DDFD1
    3CCF96FF EB5EB4C9 08366F8F FEC944CA 248AC7
    quit smoking
    secret of username admin privilege 15 5 *.

    !
    !
    Policy-map sdmappfwp2p_DEFAULT100
    !
    !
    !
    !
    !
    !
    interface FastEthernet0
    !
    interface FastEthernet1
    !
    interface FastEthernet2
    !
    interface FastEthernet3
    !
    interface FastEthernet4
    Description $$$ FW_OUTSIDE$ $ES_WAN$ ETH - WAN
    address IP dhcp client id FastEthernet4
    IP access-group 101 in
    no ip redirection
    no ip unreachable
    no ip proxy-arp
    NAT outside IP
    inspect the DEFAULT100 over IP
    IP virtual-reassembly
    route IP cache flow
    automatic duplex
    automatic speed
    sdmappfwp2p_DEFAULT100 of service-policy input
    out of service-policy sdmappfwp2p_DEFAULT100
    !
    interface Vlan1
    Description $ETH - SW - LAUNCH$ $INTF - INFO - HWIC-$4ESW $ES_LAN$ $FW_INSIDE$
    the IP 192.168.0.1 255.255.255.0
    IP access-group 100 to
    no ip redirection
    no ip unreachable
    no ip proxy-arp
    IP nat inside
    IP virtual-reassembly
    route IP cache flow
    IP tcp adjust-mss 1452
    !
    IP classless
    !
    !
    IP http server
    local IP http authentication
    IP http secure server
    IP http timeout policy slowed down 60 life 86400 request 10000
    the IP nat inside source 1 list the interface FastEthernet4 overload
    IP nat inside source static tcp 192.168.0.100 1723 1723 interface FastEthernet4
    IP nat inside source static tcp 192.168.0.100 25 25 FastEthernet4 interface
    IP nat inside source static tcp interface 192.168.0.100 80 80 FastEthernet4
    IP nat inside source static tcp 192.168.0.100 interface FastEthernet4 443 443
    IP nat inside source static tcp 192.168.0.100 interface FastEthernet4 987 987
    !
    recording of debug trap
    Note access-list 1 INSIDE_IF = Vlan1
    Remark SDM_ACL category of access list 1 = 2
    access-list 1 permit 192.168.0.0 0.0.0.255
    access-list 100 remark self-generated by the configuration of the firewall Cisco SDM Express
    Access-list 100 = 1 SDM_ACL category note
    access-list 100 deny ip 255.255.255.255 host everything
    access-list 100 deny ip 127.0.0.0 0.255.255.255 everything
    access ip-list 100 permit a whole
    access list 101 remark self-generated by the configuration of the firewall Cisco SDM Express
    Note access-list 101 = 1 SDM_ACL category
    access-list 101 permit tcp any any eq 1723
    access-list 101 permit tcp any any eq 987
    access-list 101 permit tcp any any eq 443
    access-list 101 permit tcp any any eq www
    access-list 101 permit tcp any any eq smtp
    access-list 101 permit udp host 65.24.0.169 eq field all
    access-list 101 permit udp host 65.24.0.168 eq field all
    access-list 101 permit udp host 24.29.1.219 eq field all
    access-list 101 permit udp host 24.29.1.218 eq field all
    access-list 101 permit udp any eq bootps any eq bootpc
    access-list 101 deny ip 192.168.0.0 0.0.0.255 any
    access-list 101 permit icmp any any echo response
    access-list 101 permit icmp any one time exceed
    access-list 101 permit everything all unreachable icmp
    access-list 101 deny ip 10.0.0.0 0.255.255.255 everything
    access-list 101 deny ip 172.16.0.0 0.15.255.255 all
    access-list 101 deny ip 192.168.0.0 0.0.255.255 everything
    access-list 101 deny ip 127.0.0.0 0.255.255.255 everything
    access-list 101 deny ip 255.255.255.255 host everything
    access-list 101 deny ip any one
    not run cdp
    !
    !
    control plan
    !
    connection of the banner ^ CCCCCAuthorized access only!
    Unplug IMMEDIATELY if you are not an authorized user. ^ C
    !
    Line con 0
    local connection
    no activation of the modem
    telnet output transport
    line to 0
    local connection
    telnet output transport
    line vty 0 4
    privilege level 15
    local connection
    transport input telnet ssh
    !
    max-task-time 5000 Planner
    Scheduler allocate 4000 1000
    Scheduler interval 500
    end

    All that top has been configured with the SDM interface. I hope someone here can take a look at this and see what my question is, and why I can't connect through the router.

    All thanks in advance to help me with this.

    Jason

    Based on your description, I am assuming that you are trying the traffic PPTP passthrough via the router 871, and the PPTP Protocol ends on your SBS 2008 Server.

    If this is the correct assumption, PPTP uses 2 protocols: TCP/1723 and GRE. Your configuration only allow TCP/1723, but not the GRE protocol.

    On 101 ACL, you must add "allow accord any any" before the declarations of refusal:

    101 extended IP access list

    1 allow any one

    I guess that the PPTP control connection works fine? Are you able to telnet to the router outside the ip address of the interface on port 1723?

  • Public static NAT vs. Access-List

    Hello

    I have a question what is the best practice static NAT and access list. Example:

    Server (192.168.1.1) Web inside to outside (10.10.10.10) with the port 80 and 443.

    IP nat inside source static tcp 192.168.1.1 80 10.10.10.10 80

    IP nat inside source static tcp 192.168.1.1 10.10.10.10 443 443

    Or

    IP nat inside source static 192.168.1.1 10.10.10.10

    Access-list 101 permit tcp any host 10.10.10.10 eq 80

    Access-list 101 permit tcp any host 10.10.10.10 eq 443

    interface ethernet0
    IP access-group 101 in

    Thank you

    The operational reasons - it will break things.

  • Effect of the access lists on free access of high to low by default

    I'll implement access rules list on PIX525 (V6.3) with several DMZ, but want to minimize the rules.

    Scenario - 3 interfaces (inside (secuity100, average security50 outside Security0)

    To allow hosts on the way to reach the inside I create an access list applied to a central interface. However, will be an implicit (or explicit) deny at the end of the access list prevents the intermediate hosts with default value to open access to the lower security outside the interface?

    Thank you

    Mick

    Level of security and access lists:

    To grant access of lower to higher level, you need to an access list and a static.

    Equal to equal level cannot talk to each other.

    Higher level of security can talk to lower levels, if there is no access on this interface list and the NAT is configured correctly.

    ACL will add at the end a "deny ip any any" after a statement of license. So getting back to your question: If you allow a DMZ host to connect internal host on a specific port that all other connections are blocked. You must specify all the tarffic in this access list otherwise they will be blocked.

    The only exception is the traffic may be from other interface access lists to the demilitarized zone, answers etc. For example, you are allowing port 80 to a dmz host outside this traffic will not be verified again by the dmz access list.

    sincerely

    Patrick

  • 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!

  • Separation of monitor only and Admin for Cisco ASDM (ASA) access for users authenticated via LDAP

    Hello

    We have two groups of ads on network Admins, one for the system administrators group. The network Admins will get Priv lvl 15 the other Priv lvl 3.

    This is the setup I use:

    TestASA # sh run ldap-attribute-map of test4
    Comment by card privileged-level name
    map-value comment fw - ro 5
    map-value comment fw - rw 15
    memberOf IETF Radius-Service-Type card name
    map-value memberOf "cn = s-FW-Admin, OR = security groups, DC = 802101, DC = local" 6
    map-value memberOf "cn = s-fw-ro, OR = security groups, DC = 802101, DC = local" 5

    The user in both groups can connect ssh and asdm but all users get the same rights priv lvl 15.

    Someone at - it an idea?

    You must visit the listed link below to configure ASA to only read access and access admin. not sure, if you have already been there.

    https://supportforums.Cisco.com/docs/doc-33843

    ~ BR
    Jatin kone

    * Does the rate of useful messages *.

  • access list for traffic crossing and IPSEC

    Hi, just a question fast and easy if everything goes well as im on thinking that he. IM on the establishment of the IPSEC between a Cisco router to another Cisco router. I want to only allow RDP through IPSEC.

    I of course implement the ACL for the SHEEP, but I'll have to implement another ACL application outside? interface allowing a specific RDP server and denying everything.

    Thank you

    David

    I have extracted this router to work. I changed some details to conceal the source, but it should illustrate what you need to do.

    !
    crypto ISAKMP policy 1
    BA aes 256
    preshared authentication
    Group 2
    address of examplekey key crypto isakmp 2.3.4.5
    !
    !
    Crypto ipsec transform-set esp - aes 256 esp-sha-hmac AES256SHA
    tunnel mode
    !
    cust_map 10 ipsec-isakmp crypto map
    defined peer 2.3.4.5
    game of transformation-AES256SHA
    match the address crypto_acl
    !
    interface GigabitEthernet8
    cust_map card crypto
    !
    crypto_acl extended IP access list
    host ip 192.168.25.52 permit 172.24.0.0 0.0.7.255
    !

    HTH

    Rick

  • PIX by RADIUS and access user-list

    Anyone knows if with Microsoft (IAS - RADIUS service) Internet Authentication Service

    It is possible to use download the access list for the PIX (access by user list) firewall and how do I configure IAS for this feature.

    Thanks in advance.

    Yes, it is possible. Take a look at this link which explains how I could make it work:

    http://www.Cisco.com/univercd/CC/TD/doc/product/iaabu/PIX/pix_62/config/mngacl.htm#33910

    I don't remember all the steps I took to get the ISA server computer to return the string VSA CISCO specific (attribute 26), but you should be able to understand. I am, in any case, an expert of the IAS.

    I hope this helps.

    Scott

  • Question of access list for Cisco 1710 performing the 3DES VPN tunnel

    I have a question about the use of access lists in the configuration of a router Cisco 1710 that uses access lists to control traffic through the VPN tunnel.

    For example the following lines in a configuration on the remote router. My question is whether or not the traffic that matches the definition of list access-130 (something other than 192.168.100.0/24), cross the VPN tunnel or go directly to the Ethernet0 interface.

    My understanding is that traffic that matches the access list 120 would be encrypted and sent through the IPSec tunnel. If there was "ban" set out in the statements of 120 access-list, the traffic for those would be sent through the IPSec tunnel but not encrypted (if possible). And finally, given that the definition of crypto card reference only "adapt to 120", any traffic that matches 130 access list would be sent Ethernet0 but not associated with the card encryption and thus not sent through the IPSec tunnel. "

    Any input or assistance would be greatly appreciated.

    Map Test 11 ipsec-isakmp crypto

    ..

    match address 120

    Interface Ethernet0

    ..

    card crypto Test

    IP nat inside source overload map route sheep interface Ethernet0

    access-list 120 allow ip 192.168.100.0 0.0.0.255 10.10.0.0 0.0.255.255

    access-list 130 refuse ip 192.168.100.0 0.0.0.255 10.10.0.0 0.0.255.255

    access-list 130 allow ip 192.168.100.0 0.0.0.255 any

    sheep allowed 10 route map

    corresponds to the IP 130

    He would go through the interface e0 to the Internet in clear text without going above the tunnel

    Jean Marc

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