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Max Resing<p>Anyone who seeks for a well-written analysis of unsolicited <a href="https://infosec.exchange/tags/TCP" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>TCP</span></a> traffic should give <a href="https://www.netscout.com/blog/asert/decoding-tcp-syn-stronger-network-security" rel="nofollow noopener" target="_blank">Decoding TCP SYN for Stronger Network Security</a> a read. The blog post goes into TCP-procotol specifications. Recommended to every <a href="https://infosec.exchange/tags/networkengineer" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>networkengineer</span></a> .</p><p>Props go to <span class="h-card" translate="no"><a href="https://infosec.exchange/@jtk" class="u-url mention" rel="nofollow noopener" target="_blank">@<span>jtk</span></a></span> for his strong analytical skills and excellent writing style.</p><p><a href="https://infosec.exchange/tags/honeypots" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>honeypots</span></a> <a href="https://infosec.exchange/tags/tcpflood" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>tcpflood</span></a> <a href="https://infosec.exchange/tags/tcpsyn" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>tcpsyn</span></a> <a href="https://infosec.exchange/tags/networkanomaly" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>networkanomaly</span></a> <a href="https://infosec.exchange/tags/netsec" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>netsec</span></a> <a href="https://infosec.exchange/tags/ddos" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>ddos</span></a></p>
Mike Lossmann<p>I Flipped a coin at 20 to choose my career path. Didn’t think it would lead to a career in tech, let alone becoming a Technical Evangelist. This is my journey from enterprise&gt;sales&gt;big 4 consulting to a Technical Evangelist<br><a href="https://bit.ly/42VzjDr" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://</span><span class="">bit.ly/42VzjDr</span><span class="invisible"></span></a><br><a href="https://mastodon.social/tags/Tech" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Tech</span></a> <a href="https://mastodon.social/tags/ImposterSyndrome" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>ImposterSyndrome</span></a> <a href="https://mastodon.social/tags/CareerJourney" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>CareerJourney</span></a> <a href="https://mastodon.social/tags/NetworkEngineer" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>NetworkEngineer</span></a></p>
Deutsches Forschungsnetz (DFN)<p>🌐 🔌 Dein Herz schlägt für Netzwerke? Dann wirst du bei uns glücklich!💙 </p><p>Wir suchen eine:n <a href="https://mastodon.social/tags/NetworkEngineer" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>NetworkEngineer</span></a> für Betrieb &amp; Weiterentwicklung unseres <a href="https://mastodon.social/tags/Wissenschaftsnetzes" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Wissenschaftsnetzes</span></a> – mit Fokus auf der ISP-Router-Plattform (Nokia &amp; Cisco).</p><p>💡 Du bringst Erfahrung in Routing (MPLS, BGP, OSPF…), Netzsicherheit &amp; Automatisierung mit? Perfekt!😊 </p><p>✨ Attraktive Vergütung, tolles Team &amp; Raum für Gestaltung.</p><p>Neugierig? Klick dich rein 👉 <a href="https://www.dfn.de/geschaeftsstelle/arbeiten-im-dfn/netzwerk-spezialist/" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="ellipsis">dfn.de/geschaeftsstelle/arbeit</span><span class="invisible">en-im-dfn/netzwerk-spezialist/</span></a><br><a href="https://mastodon.social/tags/ITJobs" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>ITJobs</span></a> <a href="https://mastodon.social/tags/DFN" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>DFN</span></a> <a href="https://mastodon.social/tags/XWiN" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>XWiN</span></a></p>
dan_nanni<p>MTU defines the maximum packet size at the network layer, while MSS specifies the largest TCP payload that fits within the MTU. These are key concepts you need to understand as a network engineer to avoid fragmentation and optimize network performance 😎👇 <a href="https://mastodon.social/tags/networkengineer" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>networkengineer</span></a> <a href="https://mastodon.social/tags/ccna" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>ccna</span></a> <a href="https://mastodon.social/tags/ccnp" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>ccnp</span></a> </p><p>Find high-res pdf books with all my Linux and networking related infographics at <a href="https://study-notes.org" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://</span><span class="">study-notes.org</span><span class="invisible"></span></a></p>
Asta [AMP]<p>Heeeeey <a href="https://fire.asta.lgbt/tags/security" rel="nofollow noopener" target="_blank">#security</a> <a href="https://fire.asta.lgbt/tags/networkSecurity" rel="nofollow noopener" target="_blank">#networkSecurity</a> <a href="https://fire.asta.lgbt/tags/networkEngineer" rel="nofollow noopener" target="_blank">#networkEngineer</a><span> humans/non-humans! I have a server open to the internet (definitely mentioned this before); currently I have that server connected to a dedicated NIC port on my firewall which is in a separate 'DMZ' (zone) and have rules to block outbound traffic from the 'DMZ' to my internal network. EDIT: Should make it clear the 'DMZ' zone and the regular network are all connected to the same firewall, just via different ports. Use the hardware you have and all that (although I'm not against daisy chaining and hiding the internal network behind another physical firewall if necessary in the future).<br><br>Let's say I wanted to add another server to the mix but don't necessarily want to start physically changing the network. Are there good primers on what sort of security risks I might be undertaking if I start using a 'DMZ' VLAN and add clients to the DMZ that way (without having them on a separate wired network that hooks in via the 'DMZ' port/nic on my firewall)? I assume, as a general rule, that utilizing a software solution vs. a hardware solution is always going to carry a separate set of risks, but I also know these software solutions tend to be pretty well tested. Assuming I don't just fuck up the VLAN configuration and firewall rules, am I basically worrying over nothing?<br><br>Running </span><a href="https://fire.asta.lgbt/tags/opnSense" rel="nofollow noopener" target="_blank">#opnSense</a>, for the record. Thank you!</p>
MrGrumpyMonkey<p><a href="https://mastodon.social/tags/Yugioh" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Yugioh</span></a> <a href="https://mastodon.social/tags/NetworkEngineer" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>NetworkEngineer</span></a> <a href="https://mastodon.social/tags/Meme" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Meme</span></a></p>
Travis<p>Is EVE-NG Pro worth it? Or are people still using GNS3? The last I used GNS3, it was a bit mucky with the VM. With EVE-NG (Community), it being browser based and contained in its own VM was an excellent selling point to me. What do you use/recommend?<br><a href="https://nodespace.social/tags/networking" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>networking</span></a> <a href="https://nodespace.social/tags/network" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>network</span></a> <a href="https://nodespace.social/tags/networkengineer" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>networkengineer</span></a></p>
rdm<p>To all my fellow <a href="https://aus.social/tags/sysadmins" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>sysadmins</span></a> , be you <a href="https://aus.social/tags/networkengineer" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>networkengineer</span></a> , <a href="https://aus.social/tags/dba" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>dba</span></a> , <a href="https://aus.social/tags/sysdmin" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>sysdmin</span></a> , or <a href="https://aus.social/tags/finops" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>finops</span></a> , a very happy <a href="https://aus.social/tags/sysadminday" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>sysadminday</span></a> !</p><p>You keep everything working. Thank you.</p><p><a href="https://aus.social/tags/sysadminlife" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>sysadminlife</span></a></p>
MyMindsMadness<p><a href="https://noc.social/tags/DevNet" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>DevNet</span></a> </p><p>Being able to interact with a device is fun, but sometime we need to follow process and keep a record of the changes we make. </p><p>In this one, we learn how to create a timestamped change.log file<br><a href="https://noc.social/tags/Python" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Python</span></a> <a href="https://noc.social/tags/Programming" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Programming</span></a> <a href="https://noc.social/tags/NetEng" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>NetEng</span></a> <a href="https://noc.social/tags/NetworkEngineer" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>NetworkEngineer</span></a><br><a href="https://youtube.com/shorts/2yckN-Ae24g?feature=share" rel="nofollow noopener" target="_blank"><span class="invisible">https://</span><span class="ellipsis">youtube.com/shorts/2yckN-Ae24g</span><span class="invisible">?feature=share</span></a></p>
MyMindsMadness<p><a href="https://noc.social/tags/devnet" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>devnet</span></a> </p><p><a href="https://youtube.com/shorts/S2eOarB88ak?feature=share" rel="nofollow noopener" target="_blank"><span class="invisible">https://</span><span class="ellipsis">youtube.com/shorts/S2eOarB88ak</span><span class="invisible">?feature=share</span></a></p><p>There are many tools to connect to devices a nice and simple one for your first connection is <a href="https://noc.social/tags/scrapli" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>scrapli</span></a> (scrape cli) </p><p>In this video we set up our script ready to configure a device. </p><p><a href="https://noc.social/tags/programming" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>programming</span></a> <a href="https://noc.social/tags/python" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>python</span></a> <a href="https://noc.social/tags/devops" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>devops</span></a> <a href="https://noc.social/tags/neteng" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>neteng</span></a> <a href="https://noc.social/tags/networkengineer" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>networkengineer</span></a></p>

We are doing a YouTube #shorts series to help #NetworkEngineer's who want to learn code using #python
Taking a small single script that prints an IP address, evolving it to a script that configures multiple interfaces over multiple devices.

In Part 4, we turn a #script that lists a static IP address for all Private Class C /24 ranges, into a a script that generates usable #configuration

youtube.com/shorts/8nMzLPcPXEs

Stay tuned for part 5, where we learn to create a better IP and VLAN scheme.

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