There are firewalls that are able to filter the network traffic for SQL keywords and statements (at least Cisco has such features).

A work-around would be to connect to StackOverflow / StackExchange sites using HTTPS. Then you should be able to post. This is due to HTTPS traffic being encrypted so your SQL statements won't be in human (in this case computer) readable format. The firewall then cannot sniff your posts any longer.

For example just call https://stackoverflow.com/ instead of http://stackoverflow.com/.

There are firewalls that are able to filter the network traffic for SQL keywords and statements (at least Cisco has such features).

A work-around would be to connect to StackOverflow / StackExchange sites using HTTPS. Then you should be able to post. This is due to HTTPS traffic being encrypted so your SQL statements won't be in human (in this case computer) readable format. The firewall then cannot sniff your posts any longer.

For example just call https://stackoverflow.com/ instead of https://stackoverflow.com/.