Friend stuck on Datablocks

[GMO Ferret]

When I start my server and get my friend to join, it stops at about one-third of the Datablocks loader and doesn't load anymore. Any ideas on how to fix it? Until then, I'm stuck playing Dota 2. 

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[superdupercoolguy]

Logs of both his client and your server or we can't help you

[GMO Ferret]

Logs of both his client and your server or we can't help you

How do I post logs..? Sorry ;-;

[Blocky943]

How do I post logs..? Sorry ;-;

[GMO Ferret]

Oh! Alrighty, here.

[Blocky943]

Oh! Alrighty, here.

I think you, uh.. forgot something..

[GMO Ferret]

Sorry, my friend had a hard time finding the console, since he didn't have steam. Now, though, it says 'Sending Punch Packet' over and over again when he tries to join.
It just keeps on getting better!

[Greek2me]

Sorry, my friend had a hard time finding the console, since he didn't have steam. Now, though, it says 'Sending Punch Packet' over and over again when he tries to join.
It just keeps on getting better!

Is it your server? You should port forward.

[GMO Ferret]

Is it your server? You should port forward.

There's a bunch of reasons as to why I can't, already tried. If I was to port forward, I would lag up the house's internet.

[GMO Ferret]

Also, it isn't my computer or server; it's my friend 'carmel' , he's the only one that can't join.

[Greek2me]

Well, I just told you a solution. Either use it to fix your problem or don't.

If I was to port forward, I would lag up the house's internet.

No, you won't.