Posts made by melvinsilva

Interesting.

@Dashrender You are right. From a LAN point of View, IPv4 is just fine. But for ISP IPv4 is run out of game, due the needs of more IPs for custumers and networks, here is where IPv6 is needed.

@Dashrender Comparing how many Host per network can exist in IPv4 agains IPv6 the GAP is huge.

@steve This is amazing how the amount of host per network increase in IPv6.

In big companies how use VoIP for production for example, this is a most, QoS needs to be very well deployed, to improve users/clients experience using the phone.

@mary It depends of manufacturer or vendor. Now in this times everyone is using "Standard Protocols"

@scottalanmiller I Will Add; "Only by WAN Network Administrators".

Both required a good initial configuration, but when "issues" occurs like link flaps or ISP outage (when MPLS fails), Dynamic may affect Router performance (CPU, Memory, etc).

Using Dynamic Routing; if you have no backup link or you dont have a proper failover configuration with correct threshold, the network updates will cause router performance degradation. It constantly will try to reach destination via default gateway.

Using Static Routing; If you have not a recovery plan or a back door to enter the remote router, you will have zero access to that device until link or issue is restored. Packets will be forwarded to a dead route.

For both, Initial design and configuration is the Key, when issues happens troubleshooting is a nightmare when things are not well done.

I had experience when "users" manipulate patch panel or switch and plug both end of the cable (patch cord) to the same switch, creating a physical loop, but STP blocks this and prevent network issues.

@scottalanmiller said in What Are You Doing Right Now:

Congrats to @Romo who is now Senior VP of Engineering at @NTG !!

Congrast @Romo, this is a great news, making NTG better every day.

@scottalanmiller said in What Are You Doing Right Now:

Do we have any mobile app devs in the community? I'm not aware of anyone, but figured that I would ask casually. Not looking for anything crazy, looking for primarily interface / GUI work.

Got a few known, not part of the community.

Good tip the "ping -f" command for windows

First time I completely understand the "Hidden Node" terminology.

@IRJ said in What is the Best / Most Important CyberSecurity Certification?:

It depends on where you are in your career. If you are trying to get into cyber security initially you may want to look at Security + or SSCP. Those are great entry certifications that will lead to security analyst roles.

If you have alot of IT experience (10+ years) you might go directly to CISSP. CISSP will get you more compensation than any other security certification for sure, but say you have CISSP and AWS Security that will really increase your value.

Best Entry Security Certs:

• Security +
• SSCP

Best Compensation Security Certs:

• CISSP
• AWS / Azure Security Cert

Best Cloud generic Security Certs:

• CSSK
• CCSP

Excellent!!!

@Kris_K This is exactly the starting point, Give me your comments about it.

For you, what is the most recommended CyberSecurity Certification (Neutral Vendor) ?

OSI Model, always was a pain for me, excellent video.

I know most of these ports, but this is an excellent explanation.

Amazing how "little things" do their job to make everything works.

@FiyaFly So funny, Will post it on my Social Media to see how people response.