Problem list access control

Hi guys, I'm faced with a problem with one of my ACL...

I applied it ENTERING the interface of the router facing the Internet.

I'm trying to restrict access, the only thing visible to the Internet is my Web page, but when I apply the ACL on the router Interface must be the Internet connection (I am running a ping on one of my internal hosts, but as soon as I apply this INCOMING ACL on the external Interface of my router it pick up any communication to the Internet).

I think it's because the router is down all packages «back»

I know that there is an argument (ESTABLISHED) that I can activate to allow those who return packages, but it applies only to TCP, but what happened to the ICMP, UDP protocol?

It's the ACL I use:

Note access-list 101 FW-outside-to-Inside

access-list 101 deny ip 192.168.0.0 0.0.0.255 any

access-list 101 deny ip 172.16.0.0 0.15.255.255 all

access-list 101 deny ip 10.0.0.0 0.255.255.255 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 host ip 0.0.0.0 0.0.0.0 all

access-list 101 permit tcp 66.137.99.107 host any eq 1720

access-list 101 permit tcp 66.137.99.108 host any eq 1720

access-list 101 permit tcp 66.137.99.109 host any eq 1720

access-list 101 permit host tcp 66.137.99.107 any range 16000-20000

access-list 101 permit host tcp 66.137.99.108 any range 16000-20000

access-list 101 permit host tcp 66.137.99.109 any range 16000-20000

access-list 101 permit udp host 66.137.99.107 any 5000 5075 Beach

access-list 101 permit udp host 66.137.99.108 any 5000 5075 Beach

access-list 101 permit udp host 66.137.99.109 any 5000 5075 Beach

access-list 101 permit tcp any host MYWEBSERVERSIP eq 80

access-list 101 deny ip any one

I hope you guys can give me a hint...

Thank you!!!

The last two deny statements (before your tax permit), "host 255.255.255.255 everything" and "host 0.0.0.0 0.0.0 everything" may be the problem. You have specified a reverse mask on the 0.0.0.0 0.0.0.0, which will replace the "host" command (I think) I would first try to remove these and see if it works, then re - insert them (without the mask) to see if it still works.

Tags: Cisco Security

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    Microsoft Answers Support Engineer

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    deny ip any any newspaper

    The log output:

    Mar 22 11:23:46: % s-6-IPACCESSLOGP: the list of access-list-example permit tcp nnn.nnn.nnn.nnn (0)-> xxx.xxx.xxx.xxx (0), 1 packet

    On a normal extended access list, we get this in a log output:

    access-list 120 allow host ip nnn.nnn.nnn.nnn xxx.xxx.xxx.0 0.0.0.7 Journal

    Mar 22 09:31:46: % s-6-IPACCESSLOGP: list 120 permit tcp nnn.nnn.nnn.nnn (3874)-> xxx.xxx.xxx.xxx (5001), 1 packet

    This shows the port numbers - I was wondering what small thing that I missed on logging for what I checked: http://www.cisco.com/web/about/security/intelligence/acl-logging.html and I see that the use of the switch of newspaper should do this because it shows the port numbers in their example.

    I'm sure it'll be something simple but I can't figure it out - I searched all odd Cisco cautions for ACL named which connect to port numbers, but can't find anything easily. Just wondering if anyone else has experienced this.

    Thank you

    Z.

    For the port number appear in the newspapers, you must create the list of access as follows:

    IP extended Access-list-example access list

         permit tcp any gt 0 any gt 0 log
         permit udp any gt 0 any gt 0 log

    Hope that helps.

  • Access control lists

    Hi all! Can someone tell me abt good documentation to implement ACLs (Access Control Lists)...? Standard and...

    Thank you!

    IP Access Lists configuration

    http://www.Cisco.com/en/us/customer/products/sw/secursw/ps1018/products_tech_note09186a00800a5b9a.shtml#Netdiag

    Configuring commonly used IP ACLs

    http://www.Cisco.com/en/us/Tech/tk648/tk361/technologies_configuration_example09186a0080100548.shtml

    If you find this article useful, remember to evaluate our positions as a result.  Thank you.

  • Needing ACL Manager - Access control list manager is EOL

    Hi everyone;

    CiscoWorks access control list manager is an excellent tool for the management and optimization of the ACL (removing covered ACEs, fusion maskable ACE face beaches, covered fusion ACE port ranges, removing the redundant ACEs, deleting double ACE and ACL Hits Optimizer)

    But now, it is not available more :(

    Does anyone know any similar tool or script?

    Thank you

    As much I know there no current Cisco product specially designed to manage ACL switch, such as a point solution or a feature of a product of greater reach.

    I don't see many customers with complex or extensive ACLs on the switches and the lack of tools available on the market to manage probably reflects this observation as well.

  • ORA-24247: network access denied by access control list (ACL)

    I use the function UTL_MAIL to send an attachment using PL/SQL. When I run the code, I get an error message. Why this is happening and how I can fix it. It was working before.

    I'm running on a DB v. 11.1.0.7
    SQL> @c:\report_usc2_test.sql
    DECLARE
    *
    ERROR at line 1:
    ORA-24247: network access denied by access control list (ACL)
    ORA-06512: at "SYS.UTL_TCP", line 17
    ORA-06512: at "SYS.UTL_TCP", line 246
    ORA-06512: at "SYS.UTL_SMTP", line 115
    ORA-06512: at "SYS.UTL_SMTP", line 138
    ORA-06512: at "SYS.UTL_MAIL", line 386
    ORA-06512: at "SYS.UTL_MAIL", line 631
    ORA-06512: at line 23
    Here is my code:
    DECLARE
       fhandle                       UTL_FILE.file_type;
       vtextout                      VARCHAR2 (32000);
       text                          VARCHAR2 (32000);
       v_message                     VARCHAR2 (2000);
       v_output_file_path            VARCHAR2 (200);
    
     /* Open the output file in Read mode */
    BEGIN
       fhandle := UTL_FILE.fopen ('/appl/custom', 'REPORT_USC2.txt', 'r');
       LOOP
          BEGIN
             UTL_FILE.get_line (fhandle, vtextout);
             text := text || vtextout || UTL_TCP.crlf;
       EXCEPTION
             WHEN NO_DATA_FOUND  THEN
                EXIT;
          END;
       END LOOP;
       UTL_FILE.fclose (fhandle);
    
        /*Calling UTL_MAIL.send_attach_varchar2 to send the output as Email attachment */
       UTL_MAIL.send_attach_varchar2
       (
         sender          => '[email protected]',
         recipients      => '[email protected]',
         subject         => 'Report Created - USC2',
         MESSAGE         => 'A Report for USC2 has been generated.  Please do not reply or respond to this e-mail, as it has been automatically generated.',
         attachment      => text,
         att_inline      => FALSE,
         att_filename    => 'REPORT_USC2.txt'
        );
    END;
    /
    oerr ora 24247
    24247, 00000, "network access denied by access control list (ACL)"
    // *Cause:    No access control list (ACL) has been assigned to the target
    //            host or the privilege necessary to access the target host has not
    //            been granted to the user in the access control list.
    // *Action:   Ensure that an access control list (ACL) has been assigned to
    //            the target host and the privilege necessary to access the target
    //            host has been granted to the user.
    

    I don't see anywhere in your code when you add a user to the ACL...

    You can read about this feature of security here
    http://www.Oracle.com/technology/pub/articles/Oracle-database-11g-top-features/11g-security.html

    "UTL_TCP/HTTP/SMTP access control lists.

  • Access OWB11g ACL process flows Email Network denied by access control list

    Hello

    I created an ACL to the e-mail server host and user OWBSYS

    I can test this by creating an e-mail package test in the OWBSYS schema and execute it successfully.

    However, when I deploy a workflow process with an operator of mail I get the following error.

    ORA-24247: network access denied by access control list (ACL)
    ORA-06512: at "SYS." UTL_TCP", line 17
    ORA-06512: at "SYS." UTL_TCP", line 246
    ORA-06512: at "SYS." UTL_SMTP", line 115
    ORA-06512: at "SYS." UTL_SMTP", line 138
    ORA-06512: at line 8 level

    This is a check on the ACL

    SQL > select acl, main, privilege, dba_network_acl_privileges is_grant;

    ACL
    --------------------------------------------------------------------------------
    MAIN
    --------------------------------------------------------------------------------
    PRIVILEGES IS_GR
    ------- -----
    / sys/ACLs/acl_for_owb5_cc. XML
    CONNECT
    Connect the true

    / sys/ACLs/acl_for_owb5_cc. XML
    OWBSYS
    Connect the true

    What Miss me? Any ideas greatly appreciated. Thank you.

    Fahd

    Read the note 470920.1 on metalink:
    Activity in the process Flow fails with ORA-24247 e-mail: network access denied by the ACLs ACL (OWB 11.1.0.6)

    It is the part of the Cause of the doc:

    Oracle Database 11 g Release 1 (11.1) includes a fine grain to the UTL_TCP access control.
    Packages UTL_SMTP, UTL_MAIL, UTL_HTTP and UTL_INADDR using Oracle XMLDB.
    If your application uses one of these packages, then install DB OracleXML if it is not already
    installed and configure network Access Control Lists (ACL) in the database before these packages
    can function as they were in earlier versions.

    And it's the solution according to Oracle:

    Set the ACL for the OWBSYS scheme:

    1. connect to the base with the SYS as SYSDBA user
    2. run the script after updating the mail server name and port number:

    SQL > EXECUTE DBMS_NETWORK_ACL_ADMIN. CREATE_ACL ('acl_for_owb_cc.xml', 'ACL to Control Center', 'OWBSYS', TRUE, "connect");
    SQL > EXECUTE DBMS_NETWORK_ACL_ADMIN. ASSIGN_ACL ('acl_for_owb_cc.xml', 'mail_server.domain.com', 25);
    SQL > COMMIT;

    HTH,
    Robert

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