0
votes
1answer
28 views

How can I turn on ECN for Mac OSX?

I'd like to run some networking tests with Mac OSX 10.8 and using the ECN option. However I cannot find any documentation on how to configure it. Does anybody know how to alter Mac OSX TCP networking ...
1
vote
1answer
574 views

What's up with port 8080 on my OSX box?

I thought a web server process I brought up was listening on localhost:8080, and tried to connect to it, but kept getting connection reset errors. As it turns out, I was mistaken and my process was ...
2
votes
2answers
63 views

Is it possible to suspend a socket (SSH session, specifically) to switch network devices?

When resuming a tmux workspace on my laptop, I regularly have to decide between the wired and WiFi connection. Ethernet has very low latency, but forces me to reconnect any time the laptop is moved. ...
0
votes
1answer
136 views

Gaining insight on TCP traffic

I have an iMac on which I turned off almost all applications. Browser, Skype, Spotify all turned off. Despite that, when I do a tcpdump I record still a lot of TCP traffic. How can I get insight into ...
1
vote
1answer
381 views

Force DNS resolution to use TCP

My Comcast internet connection has been giving problems in DNS resolution, and I am guessing the reason is a probably broken or limited UDP. I am currently working around it by tunneling over TCP ...
1
vote
1answer
995 views

OS X Failure in Path Maximum Transmission Unit (PMTU) Black Hole Router Detection

This all started when I was trying to download a podcast on my Mac. This happens in both Snow Leopard and Lion when the Ethernet interface is set to use Jumbo Frames. prompt> curl -v -o x.mpg ...
2
votes
1answer
122 views

TCP behavior on Mac OS vs Ubuntu

The following process results in different behavior in Mac OS and Ubutu: cat some_text_file | xargs a_shell_script.sh a_shell_script.sh #!/bin/bash echo "$@" | telnet 127.0.0.1 123 exit 0 The TCP ...
4
votes
2answers
1k views

TCP Implementation on Mac OS X

How can I find the type of TCP running on my Mac OS X? (TCP Reno, Fast TCP, ...)