An example server section from my weechat irc.conf configuration file, ~/.weechat/irc.conf. /help server will give you the commands to setup an IRC server.

irc.conf

[server]
freenode.addresses = "chat.freenode.net/6667"
freenode.proxy
freenode.ipv6
freenode.ssl
freenode.ssl_cert
freenode.ssl_priorities
freenode.ssl_dhkey_size
freenode.ssl_verify
freenode.password
freenode.capabilities
freenode.sasl_mechanism
freenode.sasl_username = "jonathanwallace"
freenode.sasl_password = "***************"
freenode.sasl_timeout
freenode.autoconnect = on
freenode.autoreconnect
freenode.autoreconnect_delay
freenode.nicks
freenode.username
freenode.realname
freenode.local_hostname
freenode.command
freenode.command_delay
freenode.autojoin = "#rubyist,#rails,#rubyonrails,#ruby,#atlrug,#javascript,#axlsx,#bnr ***your channel password***"
freenode.autorejoin
freenode.autorejoin_delay
freenode.connection_timeout
freenode.anti_flood_prio_high
freenode.anti_flood_prio_low
freenode.away_check
freenode.away_check_max_nicks
freenode.default_msg_part
freenode.default_msg_quit
freenode.notify
campfire.addresses = "127.0.0.1/6667"
campfire.proxy
campfire.ipv6
campfire.ssl
campfire.ssl_cert
campfire.ssl_priorities
campfire.ssl_dhkey_size
campfire.ssl_verify
campfire.password = "bignerdranch:****your campfire API key******"
campfire.capabilities
campfire.sasl_mechanism
campfire.sasl_username
campfire.sasl_password
campfire.sasl_timeout
campfire.autoconnect
campfire.autoreconnect = on
campfire.autoreconnect_delay
campfire.nicks
campfire.username
campfire.realname
campfire.local_hostname
campfire.command
campfire.command_delay
campfire.autojoin = "#playground,#sales_marketing,#public,#serious_business,#serious_coding,#team_car_ram_rod"
campfire.autorejoin
campfire.autorejoin_delay
campfire.connection_timeout
campfire.anti_flood_prio_high
campfire.anti_flood_prio_low
campfire.away_check
campfire.away_check_max_nicks
campfire.default_msg_part
campfire.default_msg_quit
campfire.notify