Questions tagged [f5]

For questions about network devices made by the F5 Networks company. For instance, the BIG-IP i11000 series, i10000 series, i7000 series etc.

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F5 Load Balancer Config

Can someone please share steps to configure F5 for the below scenario: Between Web and Application server, there is OAuth 2.0 setup and bearer tokens are not distributed across Application Servers. So ...
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23 views

F5 Big-IP VE incorrect load balancer operation

I have F5 Big-IP VE version 13.1.1 LTM configuration: 3 nodes pool with LB Method Round Robin Virtual Server LB (Round Robin) switches the node when the web page requests after 15 seconds. If it is ...
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1answer
146 views

How to find out F5 platform type via CLI?

There are a few platform in CLI such as: BIG-IP 2000 BIG-IP 4000 BIG-IP 3600 BIG-IP 1600 Reference: https://support.f5.com/csp/article/K53183580 My question is how to identify which platform is ...
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42 views

F5 `show sys version` only shows 3 digit only

According to https://vuldb.com/?id.147676 A vulnerability has been found in F5 BIG-IP up to 11.6.5/12.1.5/13.1.3.2/14.0.1/15.0.1 (Firewall Software) and classified as problematic. Only 13.1.3.2 ...
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1answer
24 views

Site-to-Site IPSEC through load balancer with persistence

what I'm trying to achieve is a site to site IPSEC tunnel going through a load balancer, (both sites have pfsense and balancer is f5 big ip) the reason why i'm trying to do that is because: - Site A ...
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1answer
84 views

How to troubleshoot VPN packet issues? [closed]

I'm a web developer (10 yrs), and am tech savy, but don't know a lot about networking, so please forgive my ignorance. I work from home, so I'm always on my company VPN. Over the last several weeks I'...
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2answers
415 views

can we use Cisco 4900M switch for converting single mode (1G) to multi mode (10G) interface

can we use Cisco 4900M switch for converting single mode (1G) to multi mode (10G) interface. Please let me know other possible solutions.
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2answers
757 views

F5 backup whole bigIP configuration and save UCS

I'm trying to export my current F5 bigIP configuration into a file and later create a replica of the same bigIP with that configuration. This reference mentioned following this: Create the UCS ...
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1answer
47 views

F5 BigIQ communication with BigIP

I'm new to F5. Basically a BigIQ centrally manages BigIP load balancers. In order to update the device, I have to login to the UI and apply the changes there. I would like to know how this is done (...
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1answer
1k views

Automate creation of F5 user accounts using SSH and TMSH

We have a handful of F5 BIG IP devices that have to use local user accounts. We would like to have users authenticate via and SSH key which then can then use to set their account password. How can we ...
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2answers
2k views

How does NMAP know that the device is a F5 load balancer

I was just wondering how does nmap guess that the IP address is a load balancer? Im scanning on the IP address on a Virtual IP on a F5 and it correctly identified that its an F5 appliance. how does ...
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3answers
387 views

F5 Load Balancer : Firewall and server shows source as client machine IP not F5 IP

We have two standalone Weblogic instances(On AIX Environment) Load balanced by an F5 Load Balancer. From a client machine we are running a Java Utility which makes JNDI call to one of the ejb's ...
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1answer
729 views

ISAKMP problem on F5 BIG-IP

I'm trying to move a site-to-site IPsec tunnel from a Cisco ASA 5505 and a BIG-IP LTM+AFM version 12.1.0. The tunnel was up and traffic flowed properly when the tunnel was terminated on ASA but not ...
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1answer
451 views

How can we reset a service account password in the F5 CLI?

How can we reset a service account password in F5 from the CLI? Is that even possible? If yes, can anyone please let me know the CLI commands?
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1answer
1k views

Cisco STP issue with BIG IP F5 trunk

We have above network and here is the cisco trunk configuration. Nexus 5548 interface Ethernet1/9 description F5-10G-Link switchport mode trunk switchport trunk allowed vlan 201 Cisco 3850 (...
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2answers
637 views

F5 as a backbone router

We've been using the LTM and ZebOS for some time now. Time and again we've run into OSPF bugs, and an upgrade usually resolved them. ZebOS's BGP has been relatively stable in that regard. We're ...
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1answer
416 views

F5 on AWS BGP configuration

I have added BGP to routing domain 0 on the BIG IP GUI using the AWS cloud BIG IP. however i cannot find out where to add my routing peers. imish does not work tmsh does not work zebos does not work ...
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1answer
105 views

F5 loading balancing - Routing requests to specific server in pool when specified in the request?

I have several web applications that are load balanced by an F5 appliance. What I would like to know is, for support reasons, is there a way to form an HTTP Request and have the F5 appliance route it ...
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1answer
974 views

F5 auto SNAT not working

I have install F5 VM edition to do SNAT testing but fail to produce scenario. I have enable autonat on VIP (10.10.10.201) and trying to ping google.com from A, B, C machines but ping doesn't work also ...
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2answers
3k views

F5 VIP required to have on External VLAN?

I have following network diagram [Core Switch] <-- VLAN 20 external | | <--- VIP [F5] | <--- ...
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1answer
15k views

F5 Routing - Default Route or IP Forwarding Virtual Server?

In the 21st video of the F5 video series in CBT Nuggets, Keith Barker explains that the way to make the F5 "route" is by creating an IP Forwarding Virtual Server. This server would have the following ...
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3answers
137 views

IT departments responsiblities standards (Network Admins, System Admins, and Information Security) [closed]

I am not sure if this is the right place to ask this question. We have an overlapping in the responsibilities between the following departments: Network Admins, Server Admins, and Information Security....
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0answers
668 views

MPLS L3 VPNs and F5 Route Domains

I realize the F5 community might be the right place for this question, but this concerns routing design as opposed to an ADC design. We are planning to use F5's CGNAT module for NAT'ing our campus ...
4
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1answer
127 views

How do you configure the Password Memory on the F5 Big IP?

I'm trying to find out what the command line option is to set the password memory of an F5 BIG IP. I know Password Memory can be set from the GUI but I'm not sure how it is done using the tmsh? I ...
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2answers
2k views

Does Netscaler authenticate the back-end server's certificate?

Disclaimer: I am not a network engineer but a software engineer so I may muddle my terminology, feel free to correct me where I go wrong! My understanding of our set-up is: We have a Netscaler (lets ...
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2answers
11k views

F5 session timeouts

Our F5 load balancers run version 10.2.4. We migrated from Cisco load balancer cards on the Catalyst 6500 and used to be able to run xterm sessions to our solaris and linux servers without the ...