When I type in \"git push heroku master\" I get an error that says:
ssh: Could not resolve hostname heroku.com: nodename nor servname provided, or not known
try ssh'ing directly to heroku from your command line
ssh git@heroku.com -T
if you don't get a response
! You can only access Heroku by ssh via git push and pull commands.
then it's connectivety issue or a firewall in the way that's blocking your requests.
please make an entry in your ~/.ssh/config
to get around this issue. No idea why your network is having issues. You may be behind a proxy and git has to be configured for that outside of your OS settings.
Hope this helps.
I had a heap of trouble when accessing internet via my Zyxel PLA4215. When switching to wireless everything worked fine.