application delivery
40264 TopicsRoute Domains
I see a very old post on how secure route domains are How safe are route domains? | DevCentral I want to understand in this kind of deployment should we be aware of any issues or is it a good idea wrt security to use routedomain for DMZ? If anyone has deployed DMZ in route domain, what issues have you seen? What are the Pros and Cons if GTM is deployed?17Views0likes2Comments[ASM] : "Request length exceeds defined buffer size " - How to increase the limit ?
Hi Experts , WAF is rejecting the request because it exceeds the maximum allowed request size (10MB) Requested URL : [HTTPS] /stock.option Host : trade-it.ifund.com Detected Request Length : 12005346 bytes ( 12 MB ) Expected Request Length : 10000000 bytes ( 10 MB ) How to increase the limit specific to this url/uri only ?33Views0likes1CommentNeed step-by-step guidance for migrating BIG-IP i2800 WAF to rSeries (UCS restore vs clean build)
Hello DevCentral Community, We are planning a hardware refresh migration from a legacy BIG-IP i2800 running WAF/ASM to a new rSeries platform and would like to follow F5 recommended best practices. Could you please advise on the step-by-step process for this migration, specifically around: o Whether UCS restore is recommended versus building config fresh o BIG-IP version compatibility considerations during the migration o Interface/VLAN mapping differences between iSeries and rSeries hardware o Best approach to migrate WAF/ASM policies and tuning after migration o Common issues or lessons learned during real-world cutovers Current environment: " BIG-IP model: i2800 " BIG-IP version: 17.1.3 " WAF module: ASM / Advanced WAF " Deployment: Active/Active Thank you .135Views0likes3CommentsHelp with SSH Virtual Server
Hello, we've 2 VS for SSH ( Delinea Secret Server ), Type Performance L4, NAT: AutoMap, an appropiate L4 tcp Profile and so on. If I try the connection with ssh -vvv admin@service.com. the connection gets established, but I don't get the challenge for the Fingerprint and no Password Prompt. A tcpdump looks fine, no Resets or else. I can ssh to the Pool Members from a Linux Client and from the F5 CLI without Problems. So I think the F5 drops anywhere the Key Exchange/Fingerprint. Any Idea? Thank you Karl122Views0likes6CommentsBIG IP LTM BEST PRACTICES
I want to do an F5 deployment to balance traffic to multiple web servers for an application that will be accessed by 500k users, and I have several questions. As an architecture, I have a VXLAN fabric (ONE-SITE)where the F5 (HA ACTIVE-PASIVE) and the firewall(HA ACTIVE-PASIVE) are attached to the border/service leafs(eBGP PEERING for FIREWALL-BORDER LEAF, STATIC FOR F5-BORDER). The interface to the ISP is connected to the firewall(I think it would have been recommended to attach it to the border leafs), where the first VIP is configured, translating the public IP to an IP in the FIRST ARM VLAN(CLIENT SIDE TRANSIT TO BORDER), specifically where I created the VIP on F5. 1) I want to know if the design up to this point is correct. I would also like to know whether the subnet where the VIPs reside on the F5 can be different, and if it is recommended for it to be different, from the subnet used for CLIENT SIDE TRANSIT. 2) I also want to know if it is recommended for the second ARM VLAN (server side) to be the same as the web server VLAN, or if it is better for the web server subnet(another vlan) to be different, with routing between the two networks. 3) I would also like to know whether it is recommended for the SOURCE NAT pool to be the same as the SECOND ARM VLAN (server side) or if it should be different. In any of the approaches, I would still need to perform Source NAT, I also need to implement SSL offloading and WAF (Web Application Firewall). I am very familiar with the routing aspects for any deployment model. What I would like to know is what the best architectural approach would be, or how you would design such a deployment. Thank you very much—any advice would be greatly appreciated.110Views0likes1CommentGrpc Keepalive and F5 full proxy
Hi - my F5 is running v16.1 - and is a full gRPC proxy - the problem i am having i s clinet sends gRPC ping to keep session open - to the F5 .but F5 cannot keep the session alive as there is no traffic that goes to the server - because -F5 being a proxy responds to teh ping . How can i keep the server side connection open - other than increasing the the timeout. thanks1.6KViews0likes5CommentsDNS topology not distributing as expected
We have many pools that use topology with servers in two different datacenters. Originally, we configured regions that didn't really reflect the location. The app teams told us how they wanted the LDNS servers mapped to the pool members and we a topology rule for each pool member. As time went on, I decided to model our regions and records so new topology based apps would be easier to manage. I created two new regions that reflected the DNS servers' locations and then topology rules that mapped each region to their respective datacenter. The idea is that we would no longer need to create records for each app. I didn't want to introduce any changes to how the existing topology apps were distributing traffic, so my assumption was that a lower order and lower score would prevent any conflicts. Based on the snippet below, a DNS request from 10.2.2.1 for legacy.domain.com would match rule 1 and rule 4. Rule 1 has 10.1.1.100 with a score of 100 and rule 4 has 10.2.2.100 with a score of 10. I expected that rule 1 would 'win' since it has a higher score and every request from that server would point to 10.1.1.100. But it appears to be doing some kind of weighted ratio instead. I was under the impression that GTM would select the server with the highest score all the time, unless it was unavailable. I looked through the topology docs and found the examples very confusing and didn't see anything that matches my scenario. Any feedback or explanation would be apprciated. gtm server DC1_SERVER { addresses { 10.1.1.100 { device-name DC1_SERVER_vs } } datacenter DC1 gtm server DC2_SERVER { addresses { 10.2.2.100 { device-name DC2_SERVER_vs } } datacenter DC2 gtm pool a legacy.domain.com_pool { alternate-mode global-availability load-balancing-mode topology members { DC1_SERVER_vs { member-order 0 } DC2_SERVER_vs { member-order 1 } } monitor https } gtm region REGION1_LEGACY { region-members { subnet 10.1.1.1/32 { } subnet 10.2.2.1/32 { } } } gtm region REGION2_LEGACY { region-members { subnet 10.1.1.2/32 { } subnet 10.2.2.2/32 { } } } gtm region DC1_DNS_NEW { region-members { subnet 10.1.1.1/32 { } subnet 10.1.1.2/32 { } } } gtm region DC2_DNS_NEW { region-members { subnet 10.2.2.1/32 { } subnet 10.2.2.2/32 { } } } gtm topology ldns: region /Common/REGION1_LEGACY server: subnet 10.1.1.100/32 { order 1 score 100 } gtm topology ldns: region /Common/REGION2_LEGACY server: subnet 10.2.2.100/32 { order 2 score 100 } gtm topology ldns: region /Common/DC1_DNS_NEW server: datacenter /Common/DC1 { order 3 score 10 } gtm topology ldns: region /Common/DC2_DNS_NEW server: datacenter /Common/DC2 { order 4 score 10 }Solved99Views1like3Commentswhich virtual server will be hit?
Hi, we created following virtual forwarding server for internet traffics on LTM. virtual server : internet-vs source ip: 192.12.0.1 ( downstream firewall external interface IP) destination: 0.0.0.0/0 For the return traffics of this VS, do we need to create another virtual server? If we create a new virtual forwarding server like below, will the return traffics of VS "internet-vs" hit this VS "Test-VS"? virtual server: Test-VS source: 0.0.0.0/0 destination: 192.12.0.1 Can someone please advise? Thanks in advance!91Views0likes1Comment