Juniper srx firewall interview questions and answers pdf

Posted on Friday, May 14, 2021 7:42:12 AM Posted by Durandana C. - 14.05.2021 and pdf, pdf download 0 Comments

juniper srx firewall interview questions and answers pdf

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Question 1. Answer : Basically, clustering approach is nothing but the ability of an Operating System to support multiple servers.

Juniper Srx Firewall Interview Questions And Answers Pdf

I was thinking if I should write a short article for beginners to quickly configure an SRX firewall. We will configure the followings from scratch:. First a bit of information for the SRX novice. As SRX is running Junos, it has two modes. Quickly, I can show you how to switch between these modes with an example:. Once we commit the changes, we should see the new hostname srx in the prompt.

Commit is required to save and activate your changes. SRX is a zone based firewall hence you have to assign each interface to a zone to be able to pass traffic through and into it. There may be two default zones trust and untrust coming with the factory-default config but we will delete them and configure our own zones.

Following will be our zone configuration;. Now we have assigned interfaces to each zone. To mention again, if you don't add the services e. If you want to configure a security policy you must create an address book entry for the network ranges you would like to use.

We will create one address book entry for our internal network block Our address book entry is also ready for security policy. Now it is time to enforce the security policy to allow internal users to access outside networks. Note: Address book configuration has evolved over several releases. To better understand the address book concept on SRX, you can take a look at my other post about address books once you finish this post.

As this is a firewall, if you don't create a security policy allowing traffic from one zone to the other one, don't expect your transit traffic to work. Here, we first start by deleting already existing policies to make sure no other policies exist. A security policy is created within a context. What does this mean? It means the context defines the direction. For example, policy we have created named " allow-internal-clients " is only matching any traffic from internal zone to internet zone.

Here is how we configure source nat in SRX:. For simplicity we use interface based nat which means if an internal client has an IP address on As you can see source NAT is also a context based configuration. You define from which zone you are coming and to which zone you are heading. After these configuration your internal clients whose gateway is Hi , Perfect one!

Your answer is in this forum Nikhi. You can do usual source nat and set source-nat to interface then it should work. In that case, of PPPoE, is it necessary to commit this as different interface? Hi, Perfect documentation for starters with SRX.

Your simple writing is a very helpful for me. Would you please enlighten on that? What do you think about the web interface configuration? I have to do the basic setup for the production environment with DMZ etc. Having just downloaded vSRX this provides a nice place to start. Anyway — thanks for the comment — would be nice to add this to the overview above.

Hi Marc and Joe, I have updated the post as per your feedback to cover the cli command as well. Thank you. Thank you for the post. I dont seem to understand the nat process. I tried connecting a cisco switch to the srx internal interface, client connected to the switch could not ping to the srx internal interface but able to ping if I connect client directly to srx internal interface.

Is there a need to assign vlan to srx internal interface? Hello Kenneth, I think the srx has the capability to also act as a switch beside the routing. I will suggest checking the default gateway on the switch and make sure it point to the router. Another area might be the ip address. Make sure it is on the same subnet with the srx. Excellent article for beginners like me. Thanks buddy. Could you help me out? I am using VMware workstation, i dont know if it has something to do with my network adapters, i am using them as bridged to my physical network.

I connect a endpoint This is helpful. However, I would like to add a Juniper SRX to an existing network but have it act as a switch only as security is already handled by my router.

Is this possible? Chris, You can use SRX in transparent mode as well. There are bunch of docs at Juniper and also in my blog about configuration. Thanks a lot, after try to understand some article this is the simple way and easy to understand for me.

Thx for your guide. New to zone-based firewalls, not to networking. Coming from Cisco, this and your next post helped a lot. SRX for beginners rtoodtoo policies , srx December 12, Hello rtoodtoo I like your blog.

Useful things! This article is very useful for beginners…. Thank you so much. I hope I will write another one for beginners soon. Thanks again for the great post. Hi, What do you think about the web interface configuration? Hi, i configure my srxhe2, but i want a list of commands to learn do my job. Please help release another post on vlans, vpn and other aspects. Thanks so much. Hi Farouk, please show with configuration how can it be done? Thanks for having this site. Could you check if i am missing something if i share my configuration?

Thanks much, very well explained interesting to read.. I am new to SRX. You have a feedback? Cancel reply.

Juniper SRX Firewall Interview Questions

Sir , We would appreciate if you could publish the answers of these question. That would be very helpful for interviews. Regards, Akash. This is Awesome Question answer I have ever seen a single shot. Thank You.

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Although high-end and low-end SRX platforms differ in the underlying hardware, common software base enables feature consistency and signature Juniper routing code. Questions tagged [juniper-srx]. Ask Question. Learn more… Top users Synonyms.

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There are a lot of opportunities from many reputed companies in the world. According to research Juniper Network has a market share of about 5. So, You still have the opportunity to move ahead in your career in Juniper Network Development.

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I was thinking if I should write a short article for beginners to quickly configure an SRX firewall. We will configure the followings from scratch:. First a bit of information for the SRX novice. As SRX is running Junos, it has two modes. Quickly, I can show you how to switch between these modes with an example:. Once we commit the changes, we should see the new hostname srx in the prompt.

As technology evolves and performance increases, it is normal to decide not only for a hardware upgrade but for a complete migration to a different vendor that is a real challenge. Furthermore, the top players Juniper Networks, Checkpoint, Cisco, Fortinet, and Palo Alto are pushing hard to gain more customers, leaving us engineers with the hard work to do. Why is replacing a firewall so critical? Well, because for a successful transition, all the seven OSI layers need to work well, from physical connectivity to application level! Also, you do not wan to be unable to troubleshoot a simple problem because nobody knows how. Or even worse, you do not want to conduct experiments on the production environment, trying to nail down an issue disrupting the traffic…. To avoid all this, everyone involved in the firewall administration has to go under a training plan, familiarize with the new technology, get to know the features, learn how to configure them and how to do troubleshooting.

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