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| 15:34.34 | Kobaz | http://shouldiblockicmp.com/ |
| 15:34.39 | Kobaz | everyone everywhere needs to read this |
| 15:34.43 | Kobaz | ugh people driving me nuts |
| 15:35.09 | igcewieling | Kobaz: no need for a web site, the answer is "No!" |
| 15:35.39 | Kobaz | haha |
| 15:35.42 | Kobaz | but people want a 'why' |
| 15:35.47 | Kobaz | 'but whyyyyyyy' |
| 15:36.11 | igcewieling | Blocking ICMP is something that tells me the person is a networking n00b |
| 15:38.44 | Kobaz | "I opened any any for ICMP. Itâs not good practice from a security perspective so let me know when done and Iâll close." |
| 15:38.46 | Kobaz | haha |
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| 17:22.08 | lagzilla | Haven't ICMP packets with insane ttl stopped causing issues like 20 years ago |
| 17:22.24 | Kobaz | yeah |
| 17:22.36 | Kobaz | or oversized pings |
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| 17:22.56 | Kobaz | 1999 wants it's ping of death back |
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| 18:34.10 | MICROburst | igcewieling: so you are a network pro? |
| 18:35.02 | igcewieling | Allowing ICMP is one of the few things I do on almost every device. The last thing I need is a customer complaining their circuit is down because they can't ping it or have weird throughput problems on TCP connections because MTU discovery is broken. |
| 18:35.20 | igcewieling | MICROburst: For the areas I work with, yes. |
| 18:35.56 | MICROburst | igcewieling: is QoS included? |
| 18:36.20 | igcewieling | MICROburst: QoS on Adtran hardware yes. |
| 18:37.05 | igcewieling | I have a lot of circuits where I control the routers on both ends so QoS isn't all that complicated. |
| 18:37.16 | MICROburst | igcewieling: Why should QoS be limited to Adtran hardware? You are using Polycoms and Asterisk |
| 18:37.33 | MICROburst | sry mixed you up |
| 18:37.54 | MICROburst | as far as polycoms concerns ;) |
| 18:38.36 | MICROburst | So... how many classes did you define? 4,8,12? |
| 18:40.10 | igcewieling | Most of the time I tag the packets at the router. |
| 18:43.26 | MICROburst | igcewieling: eh, interesting approach. Nowadays one needs to tag the packet at a trusted source, for example an IP phone, because otherwise you will end up in trouble identifying encrypted traffic. |
| 18:43.54 | MICROburst | Aside from that you define classes and queues. |
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| 18:47.01 | igcewieling | Most of our devices don't connect over the internet |
| 18:48.04 | MICROburst | igcewieling: huh? should your last message go into another channel? - Just in case you don't know what I was talking about 'Figure 1-5 Example Strategy for Expanding the Number of Classes of Service over Time' https://www.cisco.com/c/en/us/td/docs/solutions/Enterprise/WAN_and_MAN/QoS_SRND/QoS-SRND-Book/QoSIntro.html |
| 18:49.49 | Samot | There's no QoS guarantees over the public Internet. |
| 18:49.58 | igcewieling | Cisco likes to make that sort of stuff complicated. |
| 18:51.20 | igcewieling | I prefer 2 queues. one for signaling and audio and second for everything else. |
| 18:51.59 | MICROburst | igcewieling: Defintely sufficient for toys-R-us environments. |
| 18:52.27 | igcewieling | Most of our customer don't even have an IT person. |
| 18:53.13 | igcewieling | As Samot said, once the data hits the internet, you don't have QoS anymore. |
| 18:53.15 | MICROburst | igcewieling: you don't need to be that to complain about 'slow internet' ;) |
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| 18:54.03 | MICROburst | Of course you ISP can reset the flags but as a pro you should have an appropriate contract ;) |
| 18:58.48 | igcewieling | We ARE the ISP. |
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| 18:59.37 | igcewieling | I said, for most customers I control the routers on both ends of the circuit. we use whatever tags the transport carrier wants. |
| 19:00.23 | igcewieling | Voice never leaves our network until it gets handed off to the Verizon or Level 3 via cirect fiber. |
| 19:00.26 | igcewieling | direct fiber |
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| 19:08.27 | Samot | MICROburst: What happens when it _leaves_ the ISP. |
| 19:08.56 | Samot | MICROburst: The connection between an ISP and the end user is not the public Internet. It's a private network. |
| 19:09.11 | Samot | Your traffic can only route to the Internet when they let it. |
| 19:09.26 | Samot | Once it leaves them to the public Internet, no QoS. |
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| 20:51.51 | Kobaz | igcewieling: so you do like mpls to the customer? |
| 20:53.45 | igcewieling | It depends on the customer. Most of our customers are handed an ethernet connection at the CPE side, and on our side, the connection comes in from the carrier as an ethernet VLAN. The connection is a simple layer-2 service so we assign the IPs out of our own pool |
| 20:53.58 | Kobaz | ah |
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| 20:56.32 | igcewieling | The actual transport for the last mile might be Ethernet over Copper, Fiber, or T-1 |
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| 22:50.27 | *** topic/#asterisk by bford -> AstriCon 2019 in Atlanta! http://www.astricon.net/ -- #asterisk The Open Source PBX and Telephony Platform (asterisk.org) -=- LTS: 13.29.2 (2019/11/21) 16.6.2 (2019/11/21) Standard: 17.0.1 (2019/11/21); DAHDI: 3.0.0 (2018/11/15); libpri 1.6.0 (2017/01/27) -=- Wiki: wiki.asterisk.org -=- Code of Conduct: bit.ly/1hH6P22 |