Discussions around F5's BIG-IP security application delivery controller solutions. Ask about configuration, installation, performance, and any other administrative related issues.

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http_process_state_prepend - Invalid action:0x109010 (Server side:

I am getting a blank page on my Web App which is running with F5 & apache + Tomcat backend. I am getting intermittent errors in the F5 logs like belw http_process_state_prepend - Invalid ...
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1answer
1k views

F5 Big-IP : iRule optimization of nested switch

F5 BIG-IP 10.2.4 My iRule needs to exact-match on host and wild-card match on path. when HTTP_REQUEST { switch [string tolower [HTTP::host]] { "internal.mycompany.com" { switch -glob ...
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0answers
18 views

SecureCookies, HTTPOnly cookies, .Net, and SSL offloading

So I've been looking into implementing HttpOnly and SecureCookies in my web environment. I have an F5 as the load balancer and a couple of C# web applications hosted in iis 7.5 for the website. The ...
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27 views

Load balancer F5 and sticky session

I have installed a web application on a clustered environment where the load is balanced by an F5 device. Unfortunately I do not know exactly its model, but hopefully this information is not necessary ...
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1answer
22 views

Most robust way of forwarding multiple URL via one IP

This is probably subjective but if anyone could suggest a robust solution for the following that would be fantastic. We have potentially multiple URL's in service which are currently 1:1 with Public ...
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11 views

F5 SSL offloading custom 404 page

We have an F5 that we want to use for SSL termination in front of our JBoss servers with NetIQ auth, and we have the configuration working for all normal traffic. The problem is with our custom 404 ...
2
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1answer
2k views

301 redirect Rule For Load Balance F5 BigIp

I have a load balancer F5 Big ip for my website. Currently, I am having 302 redirect in place; however, I wanted to apply 301 but dont know how. For example: My website (abc.com) when typed 302 ...
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2answers
253 views

F5 LTM frequently kills processes with SIGKILL

We have a BIP-IP 6400 LTM device that is killing processes with an alarming frequency. The CPU is consistently around 23% utilization, so that is not an issue. Here is a sample from /var/log/ltm: ...
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1answer
148 views

For SSL bridging, do HTTPS backends verify that the load balancer is using the same private key? If so, how?

We are using the F5 to perform load balancing. When using SSL bridging instead of termination, we generally use a wildcard on the front-end and a regular SSL cert on the HTTPS backend. However, ...
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2answers
585 views

How a F5 can handle multiple virtual IP address on different network?

I'm confusing when design an F5 system. I have to using F5 with two networks subnet, for each network we need a virtual IP. The problem is F5 have only one default gateway so I only can choose one of ...
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1answer
54 views

Does the F5 LTM check every virtual server for every lookup?

I manage several F5 LTM devices which have a rapidly growing number of virtual servers configured (about 500 right now). I've noticed that when the device lists virtual servers it does so ...
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1answer
91 views

Configuring an F5 BIG-IP configuration on amazon EC2

I am a newbie to f5 BIG-IP. I want to configure an f5 BIG-IP instance to load balance 2 apache webservers under it. I am following the documentation in following link. But not clear how to route ...
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2answers
526 views

F5 allow user to access iControl RESTful API

I'm trying to interact with an F5 load balancer using the REST api. I have verified that iControl is enabled, however when I try and run a command, I am told that I am unauthorized. curl -k -u ...
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2answers
79 views

Forward Akamai's True-Client-IP via F5 BigIP

Akamai returns client IP in True-Client-IP header. This can be disabled in Akamai settings so that Akamai will return client IP in HTTP-X-Forwarded-For header, but this will contain multiple IP ...
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1answer
86 views

iControl REST Remote Authentication BIG-IP v12

I have an issue while trying to use remote authentication on iControl REST API. I have tried to configure remote authentication using the following article Configuring Remote User Authentication and ...
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1answer
49 views

How do I measure initiated SSL connections per second on IIS?

I am running a stress test on a web application that is being proxied by IIS/Win2008R2 and want to measure the number of SSL Transactions Per Second going across it. In production I have a F5 load ...
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2answers
900 views

Big IP orphaned connections

Let me state up-front that I know just enough about networking at this level to be dangerous, so if I say something stupid, please be kind. I am using a Big IP load balancer in front of 3 Apache ...
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4answers
3k views

Testing strategies for f5 bigip

I am a developer who is used to being able to test and debug code. Occasionally I have to make changes to our load balancer configuration. As far as I can see, if I mess this up it could stop the ...
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1answer
76 views

Configuring f5 to retry requests on timeout

I have a pool of servers and f5 BIG-IP loadbalancer in front of them. I want to configure the following behaviour: if one server haven't answered on http request in e.g. 1 second request will be ...
2
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1answer
720 views

is there a standard for chaining x-forwarded-for headers?

IETF RFC 2616 Section 4.2 allows a request to contain multiple headers with the same field-name as long as chronological order of insertion is preserved and their values can be converted into single ...
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3answers
5k views

Big IP F5 Basics (show run/show conf/term len 0)

I've tried to find the basics in a Big IP manual but it seems to me the device is marketed towards GUI users only. Meanwhile I want to write a few scripts to automate tasks on the load balancer. ...
3
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1answer
163 views

Application Fail over not working in apache 2.2 web server configured with BIG IP (f5) load balancer

I am using Apache 2.2 in front of my JBOSS 5.2 application server in a cluster configuration . The two nodes of the cluster configuration resides on different host . This configuration is hosted on ...
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0answers
24 views

VPN ondemand iOS8 and bonjour broken

So we use VPNondemand using the f5 edge client on our iPhones. This works pretty slick you make a shortcut to an internal website say mysite.mydomain.local and then in the config for the f5 client ...
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0answers
87 views

F5 Irule to Netscalar olicy

I am new to netscalar, Can someone tell me how to convert the below F5 irule to netscalar policy. F5 iRule: when HTTP_RESPONSE { if {[HTTP::cookie exists "e1AppState"]} { if {[HTTP::cookie ...
2
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1answer
1k views

What's the best way to detect whether an incoming request is secure?

Is there a preferred method of detecting HTTP vs. HTTPS on an incoming request to an F5 load-balancer? We are attempting to detect secure vs. non-secure with an iRule and pass a corresponding header ...
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136 views

F5 Load Balancing - axd files comes with 401 Unauthorized

I've got a problem I'm trying to resolve for some time. We have: 1 F5 Load Balancer 2 IIS servers with the same machine/validation keys behind the F5 LB Our problem is that our application hosted ...
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1answer
155 views

F5 routes all REST requests from one client to same host

I have a rest webservice clustered behind an F5 using SSL Termination, SSL persistence and the balancing is "least connections". This service sees millions of messages per day. The vast majority of ...
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2answers
1k views

Problem while adding a route to F5 BigIp version 9

I want to add a route for outbound traffic from BigIp v9. I have WANem machine configured which simulates the network traffic and want to add this as a router between BigIp9 virtual server and Client. ...
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2answers
2k views

F5 BIG_IP persistence iRules applied but not affecting selected member

I have a virtual server. I have 2 iRules (see below) assigned to it as resources. From the server log it looks like that the rules are running and they select the correct member from the pool after ...
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2answers
559 views

F5 LTM 10.2 and MSSQL 08R2

We have a mirrored SQL server setup with a pair of LTM's holding the mirror VIP. We're trying to setup a health monitor that runs a query against both servers in the mirror and directs traffic to the ...
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3answers
758 views

What are the licensing requirements for the Big IP F5 Load balancer?

I've seen older f5's on ebay for about $500 for a pair. I've heard they work great for load balancing, but I'm trying to figure out what the ongoing costs for them are. Does anyone know what kind of ...
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2answers
2k views

Changing node IP addresses in F5 BigIP configuration

I need to re-ip about 600 servers, which is bad enough by itself, but I've automated the entire process except for one part: F5 configuration. In all the documentation I can find, there is nothing ...
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1answer
378 views

How to specify proxy server big ip f5? [closed]

We are attempting to setup a big ip f5 and need outbound internet traffic to flow through proxy servers. Is that possible?
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2answers
2k views

F5 Load Balancer Resends Request On Timeout

Let me preface this by saying I am not a systems administrator, I'm a programmer. Recently, our systems administrators installed F5 load balancers. Since then, I've noticed that any time a request ...
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2answers
314 views

F5 authentication using kerberos keytab

Our network gear use tacplus for authentication and authorization. tac itself authenticates using kerberos. For one of the projects we need automated login to a F5 device using a script. Does anyone ...
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3answers
1k views

F5 Networks VPN

I have a Windows 2008 server which needs to establish a VPN connection to a company that is using a product from F5 Networks. They sent a VPN URL, username and password to me for establishing the ...
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2answers
158 views

configure F5 via Puppet

I have an Ubuntu PuppetMaster instance. I need to manage a F5 BIG-IP (v10.2.4) device. I'm following the directions for the Puppet Labs F5 module ( http://forge.puppetlabs.com/puppetlabs/f5 ). Is ...
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3answers
33k views

What is the downside to sticky sessions with load balancers?

We have a web farm of IIS7 machines which work great. In front of them is an F5 Big-IP hardware load balancer, also working fine :) Currently we're using an ASP.NET State Service to handle our ...
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1answer
69 views

What is the request flow in BIG-IP load balancers for NONE preference?

I would like to know to which member does the request will be first directed to when NONE preference is set in the BIG-IP load balancers. From this link, there are three ways to set the redundancy ...
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1answer
299 views

F5 BigIP limiting the amount of sources able to connect to a virtual server

In an F5 bigIP LTM with sw version 11.4.1, is it possible to have multiple sources addresses for a virtual server? The objective is to limit the number of sources from where the virtual server can be ...
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0answers
86 views

Format of BIG-IP configuration file?

Anyone knows if the config file for BIG-IP load balancers follow an official format or is it something F5 specific?
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303 views

Server A can see B, but B can't see A

I am setting up a network with a CentOS client, a CentOS server and a BIG-IP. The network looks like this: (client) < -- > (BIG-IP) < -- > (server) The client is on a 10.10.20.x ...
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1answer
1k views

F5 Big-IP and WSS WebSockets

We have a F5 Big-IP load balancer that handles the SSL, so the servers behind it get HTTPS rather than HTTP (SSL off loading). I don't have version handy, but in the login page I can see "Copyright ...
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1answer
184 views

Way to convert claims tokens to Kerberos that SP2010 accepts

I'm hoping there is an F5 way to do what is described in this article: http://blog.auth360.net/2010/12/03/the-triumvirate-uag-2010sp1-ad-fs-2-0-and-kerberos/ Users login to a mobile app using ...
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0answers
192 views

Is it possible to persist a session after a server as been removed from a load balanced server pool on an F5

We have a server farm hosted in a co-location data center, because of uptime SLA's in our contract we have zero access to the F5 Load Balancer. I am curious if the following is possible to achieve. ...
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1answer
2k views

How can I disable and re-enable machines in a BIG-IP pool via ssh?

I can't seem to find any simple examples of disabling and re-enabling machines using the ssh interface. Can someone give me a brief example or a pointer to decent documentation?
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1answer
631 views

F5 Big-IP : pool monitors at member node level

BIG-IP 10.2.4 When configuring a pool, I can assign a monitor at pool-level. But I can also drill-down into each member node and assign a monitor. What is a use-case for assigning a health-monitor ...
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1answer
150 views

Any iControl API equivalent to 'b merge' in BIG-IP?

I want to deploy configurations (virtual server, pools) to my bigip server, based on the files which have same format as /config/bigip.conf. However, the iControl 'create' API for virtual server and ...
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2answers
209 views

Big IP F5 outbound HTTP issues

We've tried upgrading from 9.x to 10.2 on our F5 Big IP 3400 and everything went over fine apart from one thing. We're unable to establish any outbound HTTP (80) connections from any servers that are ...
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4answers
3k views

F5 Networks iRule/Tcl - Escaping UNICODE 6-character escape sequences so they are processed as and reinserted as the 6-character sequence?

We are trying to get an F5 BIG-IP LTM iRule working properly with SharePoint 2007 in an SSL termination role. This architecture offloads all of the SSL processing to the F5 and the F5 forwards ...