How to accept Application requests at WAF F5
Dear All, I just apply WAF policy. The enforcement mode is blocking. Policy Building learning mode "Manual" Policy Builder Learning Speed "Medium" Other setting is default setting. After apply this kind of configuration, the user can't finish registering an account at our website. When go to Event Logs -> Application the show the traffic has been blocking. Attack Types "JSON Parser Attack" But this is valid traffic. I try to accept this traffic, but after test again. The traffic will block again. So my question is, how to I permanently accept this traffic and no blocking in future.
Creating iRule for Persistence Profile
Dear Community, Could you assist me in creating an iRule for a Persistence Profile requirement related to an SSO application? When users access our application via desktop, they are presented with a QR code for scanning through a mobile app to authenticate and gain access. The issue arises when, after browsing the website from the desktop (with the session routed to one node via F5 LTM), another request from the mobile app after scanning the QR code is routed to a different node. Ideally, both requests should be directed to the same node. To resolve this, the iRule needs to compare the var topic parameter with the QR_AUTHENTICATION_CHANNEL_ID from the mobile request and ensure both are directed to the same node attached is the screenshot of the code and HTML code of the website /*<![CDATA[*/ var endpoint = "\/qr-websocket"; var topic = "80f95f6f-cecf-4ab6-a70b-1196194e4baa"; var prefix = "\/qrtopic"; var stompClient = null; $(function () { var socket = new SockJS(endpoint); stompClient = Stomp.over(socket); stompClient.connect({}, function (frame) { stompClient.subscribe(prefix + '/' + topic + '/verify', function (result) { console.log(result.body); let body = JSON.parse(result.body); if (body.error) { $("#qrerror").show(); } else if (body.success) { stompClient.disconnect(); $("#qrerror").hide(); $("#qrform #token").val(body.token); $("#qrform #deviceId").val(body.deviceId); $("#qrform").submit(); } }); }); }); /*]]>*/ Regards Omran Mohamed
Unable to edit or modify Policy is Case Sensitive Option in F5 WAF
Hello Team, I've encountered an issue with the WAF Case Sensitive Option in Version 16.1.2.2 Build 0.0.28. In the Security Settings under Application Security, specifically within Security Policies, the "Policy is Case Sensitive" setting is enabled, (Login LB > Security > Application Security > Security Policies > Policies List > [XXX Policy] > General Settings >> Policy is Case Sensitive : Yes) Where I am unable to modify it directly. Despite my efforts to resolve this by downloading and re-uploading the policy, the option to change the case sensitivity remains inaccessible. Additionally, I reviewed a related support article which suggested using an iRule as a workaround for case sensitivity issues. The proposed iRule is as follows: when HTTP_REQUEST { HTTP::path [string tolower [HTTP::path]] } While this iRule effectively converts the request path to lowercase, it does not resolve the need to configure case sensitivity within the WAF Policy itself. I seek assistance in either enabling the option to modify the case sensitivity directly within the WAF Policy settings or in finding an alternative method to achieve the desired configuration. Any insights or advanced troubleshooting steps would be greatly appreciated. Thank you.Forward ASM event logs to Virtual server
Greetings. I want to forward the logs coming to ASM Policies to 2 syslog servers for the purpose of Failover Load balancing. For this I created a VS running on port 514 and I send to the pool running on port 514 but it doesn't go. When I send it with a regular log profile, the logs are forwarded to me, but it needs to go from VS as a load balance (fail-over).
Priority Group activation between 10 servers
Hi All, Is it possible to enable the priority group activation between 10 servers- condition is that at a time any one server should up, if it goes down any other one server become active and serve the request. Meaning out of 10 servers 1 should serve the request on F5 LTM.
Script to send an email if Traffic-group failovers on F5
I am using this script to detect the status of a traffic-group and send out an email if it changes its status from Active to Standby, some how i am not getting any email when i flip over the traffic group between active standby boxes. Though i have tested email through CLI and mail works. need experts advice if i am missing any thing? #!/bin/bash # Variables EMAIL_TO="x@x.com" EMAIL_SUBJECT="HLR-STG-LB01 WHARF Traffic-Group Failover Alert" TRAFFIC_GROUP="wharf" CHECK_INTERVAL=60 LOG_FILE="/var/log/failover_notify.log" # Function to send email send_email() { local message=$1 echo -e "To: ${EMAIL_TO}\nSubject: ${EMAIL_SUBJECT}\n\n${message}" | ssmtp ${EMAIL_TO} } # Function to log messages log_message() { local message=$1 echo "$(date): ${message}" >> ${LOG_FILE} 2>&1 } # Function to get the current status of the traffic group get_traffic_group_status() { tmsh show cm traffic-group | grep "${TRAFFIC_GROUP}" } # Initial state previous_status=$(get_traffic_group_status) # Main loop while true; do current_status=$(get_traffic_group_status) if [[ "${previous_status}" != "${current_status}" ]]; then if echo "${current_status}" | grep -qi "standby"; then log_message "Traffic group ${TRAFFIC_GROUP} failed over to standby." send_email "Alert: Traffic group ${TRAFFIC_GROUP} has failed over to standby on another device." elif echo "${current_status}" | grep -qi "active"; then log_message "Traffic group ${TRAFFIC_GROUP} is now active." send_email "Info: Traffic group ${TRAFFIC_GROUP} is now active on this device." fi previous_status=${current_status} fi sleep ${CHECK_INTERVAL} done ~ ~ Added this script to crontab. ensured that script is running #ps aux | grep failover_notify.sh root 23928 0.0 0.0 115208 1500 pts/1 T 12:04 0:00 /bin/bash ./failover_notify.sh root 31495 0.0 0.0 114736 948 pts/1 S+ 12:52 0:00 grep failover_notify.shIssues with F5 appliance black holeing traffic
Hi wondering if anyone can help or has seen an issue similar to this? 2 tenants on 1 Host One tenant has the issue, the other doesn't. All upstream networks and devices assurance checked and logs analysed. Issue only present on Hostname: dcnn-lb01-int.circlehealthgroup.co.uk Key Info: CPU in the control plane consistently spikes at 100% (5-10 times per min) Outbound traffic is blackholed if session starts during CPU spikes. All outbound traffic types all affected - ICMP from tmos, Node polling, F5 sync messaging, snmp messages....etc If session starts outside of CPU spikes then issue isn't present - ICMP started will run continuously without drops Symptoms last < 2secs per "CPU event". Symptoms present as if the default route drops/changes, gateway is unreachable or traffic is blackholed. Repeating here but essential to note that this is only for newly established sessions during that window. Established sessions (e.g. continuous ICMP from tmos) are not affected during the same blackholing event window where new sessions are. Thanks in advance Dave
