View Issue Details
|ID||Project||Category||View Status||Date Submitted||Last Update|
|0000034||RouterOS v5||[All Projects] General||public||2012-10-17 14:57||2013-01-03 14:00|
|Summary||0000034: SIP Helper transform SDP of SIP packets that do not travers NAT (IPSec Tunnel)|
|Description||SIP Helper seems to transform the SDP with the public IP-address even though the IP packet isn't actually traversing any NAT.|
We discovered this when using an IPSec Tunnel between RB450G and RB1000AhX2.
SIP packets routed over the tunnel is transformed if SIP Helper is active.
And there is no NAT:ing done over the IPSec tunnel on either side.
So the SIP Helper should ignore the SIP packets and leave them alone in our opinion.
Bug or by design?
|Steps To Reproduce||Create an IPSec Tunnel between to RB's.|
Activate SIP Helper on one or both sides.
Send a SIP packet over the tunnel.
Inspect the SIP SDP when it reaches the other side - the private IP-adresses within the SDP is replaced with the other sides public IP.
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