2006年10月31日 · Hi, I would really appreciate some help on the following problem encountered: The users are trying to access to a website but failed. Hence, I simulated as a user accessing to the website and sniffed the traffic and found that there are many [RST, ACK] statements. Kindly advise what causes the ma...

2009年10月30日 · I have setup a capture on our ASA. We are trying to connect across a VPN tunnel wiht a certain app and it wont connect. We can telnet and SSH to the device across the tunnel OK. It is just this one app that wont start. I have a capture set up on the inside interface of our ASA and what I see are SYN...

2013年10月8日 · Hello everyone, I have recently started learning about ASAs and I had an issue while deploying an ASA. Previously we had a router which was acting as firewall and I was assigned the task to replace it with ASA 5512. I have configured the access rules and everything. But when I bring up the ASA we ...

2024年7月19日 · In the asa logs my 10.220.2.16 >10.12.32.4 getting FLAG RST on interface INSIDE followed by a SYN ACK. We don't have any asymmetrical routing no dup routes pushing traffic in core switch to different endpoints. our crypto-maps have the correct interesting traffic defined along with the proper NATS.

2006年12月5日 · Hi Everyone, My Firewall : PIX-515E, 128 MB RAM, CPU Pentium II 433 MHz - Software Version 7.0(4) My BIG problems : In a " particular condition ", in answer to an SYN ACK, the PIX send a RST ACK to the server, with an SEQ number of 1 HIGHER than it should be. Example : Source : 10.26.50.1 (serv...

2019年3月5日 · Hi All, Please advise on the below. I checked and RST-ACK is like FIN-ACK to close the connection.. Question: 1)Without the (Fin-ACK) from 10.1.1.2, can 10.1.1.1 send (RST-ACK)? 2)If the above is yes, should 10.1.1.2 send (FIN-ACK) after (RST-ACK)? Say the TCP session is between 10.1.1.1 and 10.1...

2019年3月11日 · Hi Patrick0711, Thanks, but the problem I have is that even though I have enabled the ACL to allow comms, the message is RST-ACK to the client. It is the same message as I have deny the comms as well. I have attached a screenshot of the communication flow using Wireshark, and included ASA Log captured to correlate the events. My fear is that the firewall is the one that denying the traffic as ...

2010年6月22日 · The above is TCP packet with FIN Push ACK, and TCP packet with RST ACK. If the TCP connection has actually been torn down, that means the connection has actually been closed, therefore no more PSH packet can be sent through the same TCP connection.

2015年9月17日 · The logs says that the TCP packet was dropped with the (RST ACK) flag. Now , the thing is we have to find out why the RST are coming in for these internal Hosts.

2006年11月27日 · The other host receives the packet, records the Sequence Number of x from the client, and replies with an acknowledgment and synchronization (SYN-ACK). The Acknowledgment Number is a 32-bit field in TCP segment header.