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As part of this feature, an administrator will be able to define policies and permit/deny based on the user logging into the network. This article explains how Junos Space Security Director is used to configure user firewall in security policies. Prerequisites Before user can start using Security Director, below settings must be configured on SRX(using CLI): Active Directory Access Access Profile Refer this link for more info
Source Code and GitHub Links The source code below is also available from the following GitHub locations: deny-last in Junoscriptorium on GitHub Example Configuration Example Output SLAX Script Contents XML Script Contents Example Configuration 1 system ( 2 scripts ( 3 commit ( 4 file deny-last.slax ( 5 description "Move an "any/any" reject or deny term to the last term"; 6 ) 7 ) 8 ) 9 ) Example Output 01 [edit] 02 lab@host1-a# show security policies 03 from-zone untrust to-zone trust ( 04 policy allow-ftp ( 05 match ( 06 source-address any; 07 destination-address any; 08 application junos-ftp; 09 ) 10 then ( 11 permit; 12 ) 13 ) 14 policy deny-any ( 15 match ( 16 source-address any; 17 destination-address any; 18 application any; 19 ) 20 then ( 21 deny; 22 log ( 23 session-init; 24 ) 25 ) 26 ) 27 policy allow-smtp ( 28 match ( 29 source-address any; 30 destination-address any; 31 application junos-smtp; 32 ) 33 then ( 34 permit; 35 ) 36 ) 37 ) 38 default-policy ( 39 permit-all; 40 ) 41 42 [edit] 43 lab@host1-a# commit 44 [edit security policies policy policy deny-any] 45 warning: Moved deny/reject any term 'deny-any' to the end of the policy chain. 46 commit complete 47 48 [edit] 49 lab@host1-a# show security policies 50 from-zone untrust to-zone trust ( 51 policy allow-ftp ( 52 match ( 53 source-address any; 54 destination-address any; 55 application junos-ftp; 56 ) 57 then ( 58 permit; 59 ) 60 ) 61 policy allow-smtp ( 62 match ( 63 source-address any; 64 destination-address any; 65 application junos-smtp; 66 ) 67 then ( 68 permit; 69 ) 70 ) 71 policy deny-any ( 72 match ( 73 source-address any; 74 destination-address any; 75 application any; 76 ) 77 then ( 78 deny; 79 log ( 80 session-init; 81 ) 82 ) 83 ) 84 ) 85 default-policy ( 86 permit-all; 87 ) SLAX Script Contents 01 version 1.0; 02 ns junos = "http://xml.juniper.net/junos/*/junos"; 03 ns xnm = "http://xml.juniper.net/xnm/1.1/xnm"; 04 ns jcs = "http://xml.juniper.net/junos/commit-scripts/1.0"; 05 06 import "../import/junos.xsl"; 07 08 match configuration ( 09 for-each (security/policies/policy) ( 10 /* Count the number of policies. */ 11 var $policy-count = count(policy); 12 13 /* Find all "match any" "then reject/deny" policies 14 that are not at the end. */ 15 for-each (policy[match/source-address=="any" && 16 match/destination-address=="any" && 17 match/application=="any" && 18 (then/deny || then/reject) && 19 position() != $policy-count]) ( 20 /* Move the policy to the end. */ 21 call jcs:emit-change() ( 22 with $dot = ..; 23 with $content = ( 24 <from-zone-name>
The check-cli-acl script restricts the CLI access to logins from an authorized subnet only. This can be easily extended to multiple subnets to use 0.0.0.0/32 to deny any access. It uses jcs:parse-ip extension function. Read the document: check-cli-acl #security #How-To #cli ...
Source Code and GitHub Links The source code below is also available from the following GitHub locations: check-cli-acl in Junoscriptorium on GitHub Example Configuration SLAX Script Contents XML Script Contents Example Configuration 01 system ( 02 scripts ( 03 op ( 04 file check-cli-acl.slax; 05 ) 06 ) 07 ) 08 09 event-options ( 10 policy no-cli-for-automation-user ( 11 events ui login event; 12 attributes-match ( 13 ui login event.username matches "automation1|automation2"; 14 ) 15 then ( 16 /* 17 * Invoke an event script to forcibly log out 18 * the user who are not supposed to have CLI access. 19 * If the "automation" user is logged in via NETCONF, 20 * this script will have no effect. 21 */ 22 event-script check-cli-acl.slax ( 23 arguments ( 24 username "($$.username)"; 25 auth-subnet "0.0.0.0/32"; 26 ) 27 ) 28 ) 29 ) 30 policy cli-for-admin-user ( 31 events ui login event; 32 attributes-match ( 33 ui login event.username matches "admin1|admin2"; 34 ) 35 then ( 36 /* 37 * Invoke an event script to check if the admin 38 * user login via CLI is connected from an authorized 39 * subnet, otherwise, forcibly log out the user. 40 */ 41 event-script check-cli-acl.slax ( 42 arguments ( 43 username "($$.username)"; 44 auth-subnet "172.17.27.0/24"; 45 ) 46 ) 47 ) 48 ) 49 ) SLAX Script Contents 001 /* 002 * YOU MUST ACCEPT THE TERMS OF THIS DISCLAIMER TO USE THIS SOFTWARE. 003 * 004 * JUNIPER IS WILLING TO MAKE THE INCLUDED SCRIPTING SOFTWARE AVAILABLE TO YOU 005 * ONLY UPON THE CONDITION THAT YOU ACCEPT ALL OF THE TERMS CONTAINED IN THIS 006 * DISCLAIMER
For example, in the following log: 1 2013-03-05T09:28:12.945 junosdut RT FLOW - RT FLOW SESSION CREATE [junos@2636.1 .1.1.2.36 source-address="1.1.1.1" source-port="0" destination-address="2.1.1.1" destination-port="46613" service-name="icmp" nat-source-address="1.1.1.1" nat-sou rce-port="0" nat-destination-address="2.1.1.1" nat-destination-port="46613" src-n at-rule-name="None" dst-nat-rule-name="None" protocol-id="1" policy-name="3" source-zone-name="AS AV UF Zone1.90" destination-zone-name="AS AV UF Zone1.91" session-id-32=" 31117" username="N/A" roles="N/A" packet-incoming-interface="fe-0/0/2.0" The key value pairs appear as: destination-address="2.1.1.1" destination-port="46613" These keys can form the query attributes
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#security #zerotrust
network-security-with-128-technology-white-paper.pdf