[OpenSIPS-Users] force_tcp_alias / "tcpconn_add_alias: possible port hijack attempt"

Max Mühlbronner mm at 42com.com
Tue Nov 26 09:41:10 CET 2013


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Hi,


when using force_tcp_alias(),  after already setting
tcp_persistent_flag i am receiving errors:

/sbin/opensips[17128]: ERROR:core:tcpconn_add_alias: possible port
hijack attempt
/sbin/opensips[17128]: ERROR:core:tcpconn_add_alias: alias already
present and points to another connection (1080 : 5060 and 1261 : 5060)

Any idea if this is caused by using force_tcp_alias + tcp_persistent
flag? Does it mean there is already a connection alias because of
tcp_persisten_flag?


Why:

I was having problems with TCP connections dropping even after using
tcp_persistent_flag so i thought trying force_tcp_alias() might help.



Best Regards



Max M.

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