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visits member for 2 years, 9 months
seen Jul 17 at 13:00

Dec
4
revised How to check who blocks ICMP during MTU path negotiation?
added 66 characters in body
Dec
4
answered How to check who blocks ICMP during MTU path negotiation?
Dec
4
answered MTU, DSL router and stalling TCP
Dec
4
comment /32 subnets on Ethernet via DHCP
I'll do that (guess there's a lot more more to IP addressing than what was explained in my networking class ;). I'm pretty certain about the public IP addresses though; the static /30 is not translated in any way (the webserver on the host is reachable from the internet on that address), and in our campus management system I can clearly see my "personal" public IP address. Incoming connections to port 80 are possible as well. Seems like a giant waste, but they apparently do it to comply to wiretap legislation which would otherwise force them to log all dynamic IP assignments in time.
Dec
4
comment /32 subnets on Ethernet via DHCP
At my old university, I once requested a static IP for a host, and they assigned it a /30 public address like you described. I've always wondered whether there was any more efficient way to handle that (but they don't seem to have a lack of public addresses - every electric door opener has a public IPv4 address...). At my current university, all the users get a static, public IP by default, in a /16 subnet - but I can't see any ARP requests etc. on the network. I was always wondering how the clients know where to send traffic to another host on the same subnet in that environment.
Dec
3
accepted /32 subnets on Ethernet via DHCP
Dec
3
revised /32 subnets on Ethernet via DHCP
added 505 characters in body
Dec
3
awarded  Commentator
Dec
3
comment /32 subnets on Ethernet via DHCP
I want to be able to use a firewall between all the clients on the local network and especially reduce the amount of broadcast on the segment, while still allowing traffic on certain ports.
Dec
3
comment /32 subnets on Ethernet via DHCP
The drawback would be a potential waste of IP addresses - I'm using private adresses, so in my case it's not a big deal, but how does that work with public addresses? VLANs sound like a nice idea - I'll check if my switch supports them. Would the configuration also be a /30 mask for all the hosts? If not, how do the clients know to send their packets to the gateway instead of using ARP and directly transmitting on the layer 2 interface?
Dec
2
awarded  Tumbleweed
Dec
2
comment /32 subnets on Ethernet via DHCP
Looks like the cleanest solution, but it wastes three addresses. I was hoping for a way to somehow eliminate subnets altogether.
Dec
2
asked /32 subnets on Ethernet via DHCP
Nov
27
accepted huponexit for non-login shells
Nov
26
comment huponexit for non-login shells
That doesn't seem to work - the kill doesn't seem to be sent to the child processes in the first place, since the shell isn't a login shell...
Nov
25
comment huponexit for non-login shells
I want the opposite behavior of nohup.
Nov
25
asked huponexit for non-login shells
Nov
21
comment Is it possible to run a VNC server without a GPU on linux?
Xvfb seems to be exactly what I was looking for.
Nov
21
accepted Is it possible to run a VNC server without a GPU on linux?
Nov
21
comment Is it possible to run a VNC server without a GPU on linux?
There is no machine yet - I'm thinking about building a home server or renting a hosted server, and I'm wondering if I should get one that has a GPU if I want to occasionally use a GUI application on it. It's going to run Linux in any case.