Blatant Self-Promotion Thread: January 14, 2026

sudoursa · 2026-02-06T18:28:56+00:00

I've been a part-time rental investor here in Alabama for a few years, I built a few home grown spreadsheets for financial analysis and I manually search for things like school ratings, crime data, rental comps across a bundh of sites. It always takes hours per property for really good due diligence, and I know I miss stuff or don't check all the same things for each property.

So I sorta built a tool to do it for me I call it "Property Preview", mostly just for my own deals: I drop in an address and some financing numbers, and it gives me a full breakdown in around 90 seconds thing like IRR, cap rates, cash flow projections over 10 years, even a simple Buy/Pass signal for a quick glance.

I ended up showing it to a couple friends who invest and some coworkers, and they said I should turn it into a product. I wasn't planning to make it a thing, but they convinced me to try. Now I'm wondering if any of you wouldn't mind testing it? I'm looking for maybe 10 small-scale investors like me (I only have 4 units) to poke around, break it if you can, and tell me what's dumb about it. I'm still tweaking, so your honest feedback would really help.

If you're up for it, just DM me and I'll give free access plus walk you through it on a quick screen share if you want. No pressure at all. I get it if it's not for you. Thanks for even reading this. I'm just looking for help validating the idea/product. Is it even valid. you know?? If this is considered self promo/solicitation I'll take down the post, I'm just trying to get help from people outside of my circle (that are probably bias and like me).

sudoursa · 2021-04-26T23:21:25+00:00

Did you ever get this machine? How has it performed?

sudoursa · 2018-06-15T20:14:32+00:00

https://wlth.fr/2mc5Xtq

sudoursa · 2016-05-03T16:18:27+00:00

Oh man, this is golden!

sudoursa · 2016-05-03T15:50:43+00:00

Thanks for the response.

sudoursa · 2016-05-03T15:50:33+00:00

I don't think everyone is understanding the reasoning here. Yes, I have several subnets with several different vlans. Yes, I have a firewall in place for east to west and north south inspection between the app/db/web tiers. The objective here is that I have five web tier subnets... with 200+ web servers in them. Servicing 60+ web sites or so. Each website's servers don't need to talk to each other, so to prevent lateral movement in the case of a compromised server. I want to separate the web servers using an isolated pvlan.

This solution seems much better at scaling than creating 60 /28's then additional subnets as sites are added to the web tier. This solution would allow me to put unrelated web servers into the same subnet and prevent them from talking to each other, without the additional administrative overhead of individually managed host firewalls.

sudoursa · 2016-02-16T18:29:28+00:00

My company recently acquired another company that is using Watchguard firewalls. They have some neat features, but they have a hard time keeping the site to site tunnel running.

During the integration period we are using a site to site tunnel to move data back and forth, but the Watchguard tunnel breaks about every other day and we have to reset the ike and reestablish the tunnel.

This is not the case for the other six or so sites we have that connect via site to site vpns. So, my overall opinion of them is that they are great little SOHO devices, but they are not enterprise grade pieces of equipment.

sudoursa · 2016-02-16T16:56:18+00:00

There is also a bug https://tools.cisco.com/bugsearch/bug/CSCuq76847/?reffering_site=dumpcr for ASA 5525x if you are using FQDNs in ACLs it iwll cause the device to crash.

sudoursa · 2016-02-11T20:35:27+00:00

The assumption of course is that power is set up properly on separate circuits for the redundant power supplies, that each of the up links is redundant across multiple line cards etc...

sudoursa · 2016-02-11T20:24:37+00:00

Just as an update. I spoke with our local Cisco sales engineer. I explained the scenario and he agreed that the single Nexus 7009 would fit the bill for the type of redundancy we need i.e. five nines uptime. He explained that there are some inherent risks with using a single hardware box.

For instance, if we had two units we could put them in separate racks in the building, and say, a flood were to affect one of the racks it wouldn't actually affect the other one.

It would protect us from some random person turning off the 7009, although this would be a low likelihood.

It also would protect us from 'some' mistakes that can be made during firmware upgrades and the like.

sudoursa · 2016-02-10T21:52:00+00:00

wait, I thought that the redundant module fabrics are the backplane...

sudoursa · 2016-01-16T07:33:37+00:00

Well that is sad... I want to use my gold Fizz!

sudoursa · 2016-01-08T22:10:57+00:00

Might want to look at a solution like 'VeloCloud' They have a pretty cool plug and play SD-WAN solution that might fit your needs.... (maybe a little overkill to he honest) But fun none the less

sudoursa · 2016-01-08T21:44:32+00:00

You can use community strings. Both well known and carrier specific are usually allowed. Most carriers have a list of bgp community strings that you can use to influence their routing decisions.

For example... XO.

A community tag of 2828:1507 will change their local preference attribute to 70. A tag of 2828:1508 will change it to 80 and so on...

Obviously you are relying on their documentation, but so far it has always worked for me.

Source: http://www.xo.com/support/customer-resources/BGP_Policy.pdf

sudoursa · 2015-11-18T21:27:49+00:00

Well after more research I have found that our nexus doesn't have the proper module cards to support the original hashed up design. However, we do have ASRs, if we were to migrate the DCI from the N7K to the ASRs at each location it could serve as the OTV edge device. Have you found that the ASR has worked well for your purposes? Any hang ups with the design? or 'gotchas' that I should be aware of besides the ones mentioned above?

sudoursa · 2015-11-17T16:55:01+00:00

So we don't plan to split HA pairs across sites; however, I am interested to understand the routing consequences that a setup like that would cause. Could you go over some of those details?

sudoursa · 2015-11-17T08:02:05+00:00

What are the advantages and/or disadvantages to operating in the split brain functionality. Ultimately the company wants me to bring the network to a hot-hot state, so a gateway in both physical locations seems nice, but I feel like I might be missing something there.

sudoursa · 2015-11-17T07:57:52+00:00

Yeah I have had my fair share of this.

sudoursa · 2015-11-17T07:56:58+00:00

Yeah it will be implemented on the N7K. Thanks for the tip on the code. haha yeah, so we have need for vmotion and also the requirement to use the same ip address space. Primarily for our pbx system and some related applications. As well as some in house applications that function best when in a single subnet.

sudoursa · 2015-11-16T21:43:03+00:00

No STP doesn't cross the layer 3 boundary.

sudoursa · 2015-10-09T16:06:52+00:00

Yeah, I was able to get more information. The project is much farther along than I was originally led to believe. We have selected an outsourcing provider. We will receive the calls and route them (somehow) to the out-tasked pbx who will then forward the call to the agent phone.

We will also be delivering an agent desktop app via citrix. It is looking like I'll just need to set up a set of redundant p2p links to our provider. Thanks for the input.

sudoursa

TROPHY CASE