How to create responder policy allow/block a set of ip's

  • We need to first create a data set under AppExpert>Dataset
  • We need to put all the IP that we want to block/allow

User-added image

  • After creating the data set create the following responder policy

CLIENT.IP.SRC.TYPECAST_TEXT_T.CONTAINS_ANY(“data_set”)

In the above expression I have called the data set in the expression

For subnet range the policy will be as follows:

CLIENT.IP.SRC.IN_SUBNET(x.x.x.x/32)

Now if we want to evaluate single Ip and subnet we need to create the following expression:

CLIENT.IP.SRC.TYPECAST_TEXT_T.CONTAINS_ANY(“data_set”) && CLIENT.IP.SRC.IN_SUBNET(x.x.x.x/32)

>You can use other subnets using && operator. Take assistance of expression editor to configure the policy.

>And create a action (in this case I am creating a action as redirect)

User-added image

>Bind the responder to the virtual server

Since the above expression is true for ip 1.1.1.1 you will get redirected to https://citrix.com

Related:

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How to create responder policy allow/block a set of ip's

  • We need to first create a data set under AppExpert>Dataset
  • We need to put all the IP that we want to block/allow

User-added image

  • After creating the data set create the following responder policy

CLIENT.IP.SRC.TYPECAST_TEXT_T.CONTAINS_ANY(“data_set”)

In the above expression I have called the data set in the expression

For subnet range the policy will be as follows:

CLIENT.IP.SRC.IN_SUBNET(x.x.x.x/32)

Now if we want to evaluate single Ip and subnet we need to create the following expression:

CLIENT.IP.SRC.TYPECAST_TEXT_T.CONTAINS_ANY(“data_set”) && CLIENT.IP.SRC.IN_SUBNET(x.x.x.x/32)

>You can use other subnets using && operator. Take assistance of expression editor to configure the policy.

>And create a action (in this case I am creating a action as redirect)

User-added image

>Bind the responder to the virtual server

Since the above expression is true for ip 1.1.1.1 you will get redirected to https://citrix.com

Related:

  • No Related Posts

How to create responder policy allow/block a set of ip's

  • We need to first create a data set under AppExpert>Dataset
  • We need to put all the IP that we want to block/allow

User-added image

  • After creating the data set create the following responder policy

CLIENT.IP.SRC.TYPECAST_TEXT_T.CONTAINS_ANY(“data_set”)

In the above expression I have called the data set in the expression

For subnet range the policy will be as follows:

CLIENT.IP.SRC.IN_SUBNET(x.x.x.x/32)

Now if we want to evaluate single Ip and subnet we need to create the following expression:

CLIENT.IP.SRC.TYPECAST_TEXT_T.CONTAINS_ANY(“data_set”) && CLIENT.IP.SRC.IN_SUBNET(x.x.x.x/32)

>You can use other subnets using && operator. Take assistance of expression editor to configure the policy.

>And create a action (in this case I am creating a action as redirect)

User-added image

>Bind the responder to the virtual server

Since the above expression is true for ip 1.1.1.1 you will get redirected to https://citrix.com

Related:

  • No Related Posts

How to create responder policy allow/block a set of ip's

  • We need to first create a data set under AppExpert>Dataset
  • We need to put all the IP that we want to block/allow

User-added image

  • After creating the data set create the following responder policy

CLIENT.IP.SRC.TYPECAST_TEXT_T.CONTAINS_ANY(“data_set”)

In the above expression I have called the data set in the expression

For subnet range the policy will be as follows:

CLIENT.IP.SRC.IN_SUBNET(x.x.x.x/32)

Now if we want to evaluate single Ip and subnet we need to create the following expression:

CLIENT.IP.SRC.TYPECAST_TEXT_T.CONTAINS_ANY(“data_set”) && CLIENT.IP.SRC.IN_SUBNET(x.x.x.x/32)

>You can use other subnets using && operator. Take assistance of expression editor to configure the policy.

>And create a action (in this case I am creating a action as redirect)

User-added image

>Bind the responder to the virtual server

Since the above expression is true for ip 1.1.1.1 you will get redirected to https://citrix.com

Related:

  • No Related Posts

How to create responder policy allow/block a set of ip's

  • We need to first create a data set under AppExpert>Dataset
  • We need to put all the IP that we want to block/allow

User-added image

  • After creating the data set create the following responder policy

CLIENT.IP.SRC.TYPECAST_TEXT_T.CONTAINS_ANY(“data_set”)

In the above expression I have called the data set in the expression

For subnet range the policy will be as follows:

CLIENT.IP.SRC.IN_SUBNET(x.x.x.x/32)

Now if we want to evaluate single Ip and subnet we need to create the following expression:

CLIENT.IP.SRC.TYPECAST_TEXT_T.CONTAINS_ANY(“data_set”) && CLIENT.IP.SRC.IN_SUBNET(x.x.x.x/32)

>You can use other subnets using && operator. Take assistance of expression editor to configure the policy.

>And create a action (in this case I am creating a action as redirect)

User-added image

>Bind the responder to the virtual server

Since the above expression is true for ip 1.1.1.1 you will get redirected to https://citrix.com

Related:

  • No Related Posts

How to create responder policy allow/block a set of ip's

  • We need to first create a data set under AppExpert>Dataset
  • We need to put all the IP that we want to block/allow

User-added image

  • After creating the data set create the following responder policy

CLIENT.IP.SRC.TYPECAST_TEXT_T.CONTAINS_ANY(“data_set”)

In the above expression I have called the data set in the expression

For subnet range the policy will be as follows:

CLIENT.IP.SRC.IN_SUBNET(x.x.x.x/32)

Now if we want to evaluate single Ip and subnet we need to create the following expression:

CLIENT.IP.SRC.TYPECAST_TEXT_T.CONTAINS_ANY(“data_set”) && CLIENT.IP.SRC.IN_SUBNET(x.x.x.x/32)

>You can use other subnets using && operator. Take assistance of expression editor to configure the policy.

>And create a action (in this case I am creating a action as redirect)

User-added image

>Bind the responder to the virtual server

Since the above expression is true for ip 1.1.1.1 you will get redirected to https://citrix.com

Related:

  • No Related Posts

How to create responder policy allow/block a set of ip's

  • We need to first create a data set under AppExpert>Dataset
  • We need to put all the IP that we want to block/allow

User-added image

  • After creating the data set create the following responder policy

CLIENT.IP.SRC.TYPECAST_TEXT_T.CONTAINS_ANY(“data_set”)

In the above expression I have called the data set in the expression

For subnet range the policy will be as follows:

CLIENT.IP.SRC.IN_SUBNET(x.x.x.x/32)

Now if we want to evaluate single Ip and subnet we need to create the following expression:

CLIENT.IP.SRC.TYPECAST_TEXT_T.CONTAINS_ANY(“data_set”) && CLIENT.IP.SRC.IN_SUBNET(x.x.x.x/32)

>You can use other subnets using && operator. Take assistance of expression editor to configure the policy.

>And create a action (in this case I am creating a action as redirect)

User-added image

>Bind the responder to the virtual server

Since the above expression is true for ip 1.1.1.1 you will get redirected to https://citrix.com

Related:

  • No Related Posts

How to create responder policy allow/block a set of ip's

  • We need to first create a data set under AppExpert>Dataset
  • We need to put all the IP that we want to block/allow

User-added image

  • After creating the data set create the following responder policy

CLIENT.IP.SRC.TYPECAST_TEXT_T.CONTAINS_ANY(“data_set”)

In the above expression I have called the data set in the expression

For subnet range the policy will be as follows:

CLIENT.IP.SRC.IN_SUBNET(x.x.x.x/32)

Now if we want to evaluate single Ip and subnet we need to create the following expression:

CLIENT.IP.SRC.TYPECAST_TEXT_T.CONTAINS_ANY(“data_set”) && CLIENT.IP.SRC.IN_SUBNET(x.x.x.x/32)

>You can use other subnets using && operator. Take assistance of expression editor to configure the policy.

>And create a action (in this case I am creating a action as redirect)

User-added image

>Bind the responder to the virtual server

Since the above expression is true for ip 1.1.1.1 you will get redirected to https://citrix.com

Related:

  • No Related Posts

Cisco NX-OS Software Border Gateway Protocol Multicast VPN Session Denial of Service Vulnerability

A vulnerability in the Border Gateway Protocol (BGP) Multicast VPN (MVPN) implementation of Cisco NX-OS Software could allow an unauthenticated, remote attacker to cause a BGP session to repeatedly reset, causing a partial denial of service (DoS) condition due to the BGP session being down.

The vulnerability is due to incorrect parsing of a specific type of BGP MVPN update message. An attacker could exploit this vulnerability by sending this BGP MVPN update message to a targeted device. A successful exploit could allow the attacker to cause the BGP peer connections to reset, which could lead to BGP route instability and impact traffic. The incoming BGP MVPN update message is valid but is parsed incorrectly by the NX-OS device, which could send a corrupted BGP update to the configured BGP peer. 

Note: The Cisco implementation of BGP accepts incoming BGP traffic from only explicitly configured peers. To exploit this vulnerability, an attacker must send a specific BGP MVPN update message over an established TCP connection that appears to come from a trusted BGP peer. To do so, the attacker must obtain information about the BGP peers in the trusted network of the affected system.

Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.

This advisory is available at the following link:
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-nxosbgp-mvpn-dos-K8kbCrJp

This advisory is part of the August 2020 Cisco FXOS and NX-OS Software Security Advisory Bundled Publication, which includes seven Cisco Security Advisories that describe seven vulnerabilities. For a complete list of the advisories and links to them, see Cisco Event Response: August 2020 Cisco FXOS and NX-OS Software Security Advisory Bundled Publication.

Security Impact Rating: High

CVE: CVE-2020-3398

Related:

ADC | GUI Access lost after firmware upgrade

in a lot of environments, due to the COVID situation there was spike in access to VPN based services, and in some situations slowness was observed in loading VPN / AAA Login page, to mitigate this problem some changes were done on httpd.conf file (https://support.citrix.com/article/CTX255947).

With a customized httpd.conf (for the above or any other reason), GUI issues can occur, an excerpt from the article below.

WARNING – Following the above solution might result in issues with future firmware upgrades.

When you apply the above configuration, the httpd.conf will not be updated during a future firmware upgrade. This could cause the GUI to become completely unavailable.

If this occurs, you must delete the file /nsconfig/httpd.conf (on both primary and then secondary node), reboot the ADC, and then reapply the below settings.

The clear diagnosis of that issue is that if you run “ps aux | grep httpd” in shell mode, there will be no httpd processes running.

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